© Copyright, Josh Keller, 2017
By Josh Keller | Published: February 22, 2017
Most cannabis growers worry if we see purple stems, stalks, and petioles on our marijuana plants.
The color of leaves, stems, stalks, and petioles are a big part of our marijuana plant’s language as it tries to tell us if it’s happy or suffering.
Purple stems may be telling you that your plants will grow slower, buds will form slowly, buds will be smaller and less developed.
Purple stems, stalks, and petioles may be a warning sign of problems with nutrients, root zone pH, plant health, or grow room environment.
A stressed cannabis plant will often have purple stems and other parts.
But… some marijuana strains are genetically programmed to have purple stalks, stems, petioles, and leaves.
Check out these beautiful purple marijuana strains, for example.
You can discover if the strain you’re growing is genetically programmed to be purple by looking at strain descriptions, photos, and YouTube videos… and by asking the strain’s breeder.
If your grow op has multiple strains all fed and lit the same way but only one strain is going purple, and if the purple strain is growing as well as all the other strains, you’ve probably got nothing to worry about.
However if you’re growing multiple strains and most or all plants have purple stems, petioles, and stalks, you’ve likely got problems to diagnose and fix, especially if the strains aren’t known to be purple strains.
The most common purple problems come from hydroponics nutrients disorders and root zone issues.
Phosphorus and magnesium lockout or deficiencies are at the top of the list.
(Read here about nutrients lockout).
Purple stems can also come from nitrogen or potassium deficiencies or lockouts.
Nutrients issues can be frustratingly complicated.
Please look at this series of articles giving you a scientific way of diagnosing and fixing nutrients problems.
Fixing magnesium deficiencies is easier than fixing phosphorus, nitrogen, or potassium problems.
You root or foliar feed Epsom salts at a rate of ¼ teaspoon of Epsom salts per gallon root feed or a 130 ppm foliar feed at 5.7 pH.
You can root feed Sensi Cal-Mag in grow phase and the first three weeks of bloom phase.
In bloom phase, root feed Bud Candy, Bud Factor X, and Microbial Munch (all three have magnesium).
Fixing phosphorus deficiency is challenging because there are few solo phosphorus supplements.
If I suspect phosphorus deficiency, I add B-52 in grow phase, and B-52 and Big Bud in bloom phase.
The B-52 provides added phosphorus, nitrogen, and potassium, along with B vitamins that help stressed plants.
B-vitamins also increase bud development.
Beware that most bloom boosters contain way too much phosphorus in relation to potassium.
Inferior hydroponics base nutrients and supplements can create lockout and deficiencies, as can incorrect root zone pH, bad water, overwatering, and overfeeding.
And if you routinely add a solo element like magnesium into your root zone, you may eventually create other problems, such as nutrients lockout.
Only feed materials such as Epsom salts for one or two watering cycles, then stop using that material, and see what happens.
If you’ve tried flushing, adding individual nutrient elements such as magnesium, eliminating grow room environmental problems, pests, and diseases, and you still have purple stems, petioles and other plant parts, watch your purpling plants closely.
If they’re purple but they’re otherwise growing well, no worries.
But if they’re growing slowly or not at all, if bud development is delayed and inadequate, if they’re not using much water or nutrients, this is most likely a sign of a defective strain.
This is especially verified if you’re growing other strains in the exact same environment and they’re doing great.
For example, I had a 3000-watt grow room with five different strains.
Four strains grew fine and yielded big.
One strain had purple stems starting three weeks into grow phase.
I couldn’t fix it.
Those plants grew slowly with weak stems and stalks.
They didn’t yield enough weight, even though the buds were potent.
I won’t grow that strain again!
Table of Contents
- Do purple stems mean purple buds?
- Why is my seedling stem purple?
- What plants have a purple stem?
- Can overwatering cause purple stems?
- Why are my stems purple?
- Part of a video titled Purple Tomato Leaves and Stems: Problem, Fix & Don’t Worry – YouTube
- Is pokeweed poisonous to touch?
- Are pokeweed poisonous?
- Should I remove pokeweed?
- Is pokeweed a narcotic?
- What happens if you touch pokeweed with your bare hands?
- Is pokeweed poisonous to humans?
- What should you do if you touch pokeweed?
- Cannabis Purple Stems: Everything You Need To Know
- Cannabis purple stems, how can I fix it? – Delicious Seeds
- How to fix cannabis stems that turn purple | Grow Weed Easy
- What do Purple and Red Cannabis Stems Mean?
- Why are my marijuana plant stems purple?
- Why Do My Marijuana Plants Have Purple Stems, Stalks …
- All You Need To Know About Red Stems On Cannabis Plants
Do purple stems mean purple buds?
Exposing your plants to cooler temperatures stimulates the production of anthocyanin. As a result, the buds and leaves produce a vibrant purple color that leads to purple stems on your weed plants
Why is my seedling stem purple?
Phosphorous Deficiency Take a close look at your seedlings. The best way to identify a phosphorus deficiency is that the stems and bottom leaves are purple. This problem is easy to fix, and it’s common because people forget to feed seedlings
What plants have a purple stem?
Purple Foliage/Stems or Marked with Purple
- African False Hosta, Little White Soldiers, Leopard Ears, Leopard Plant. …
- African False Hosta, Little White Soldiers, Leopard Ears, Leopard Plant, Scilla. …
- Akadama? Bigleaf Hydrangea (Dark Mophead, Compact), French Mophead Hydrangea.
Can overwatering cause purple stems?
Sometimes, discoloured stems can be a sign of transplant shock, heat stress, overwatering, or even a bug infestation. That’s why, if you spot purple or red stems, it’s important you pay close attention to identify the root cause of the discolouration.
Why are my stems purple?
While purple coloration on stems and petioles can be one of the signs of magnesium deficiency in plants, it is also a sign that the plant is producing natural purple pigments (anthocyanin) in response to ultraviolet (UV) light.
Part of a video titled Purple Tomato Leaves and Stems: Problem, Fix & Don’t Worry – YouTube
Is pokeweed poisonous to touch?
Is pokeweed poisonous to touch? Yes. Pokeweed, also known as nightshade, has been long documented as one of the most dangerous plants to humans, pets, and livestock in the natural world.
Are pokeweed poisonous?
All parts of the pokeweed plant are poisonous, especially roots and seeds, but its toxicity is generally considered to be low. Pokeweed can reach up to 10 feet tall and has distinctly red stems and berries that change from green to dark purple when ripe.
Should I remove pokeweed?
A: Your plants with pink stems and long strands of berries is Phytolacca americana (pokeweed). It is considered a non-native invasive plant and removal is recommended. Seeds and roots should go in trash to reduce chances of spreading it. Stems and leaves can be composted.
Is pokeweed a narcotic?
Although pokeweed can cause severe poisoning in humans, Native Americans once used this plant as a heart stimulant and as a narcotic. The plant also contains a protein that has been shown to have a positive impact on HIV, a precursor to the AIDS virus.
What happens if you touch pokeweed with your bare hands?
Pokeweed can cause nausea, vomiting, cramping, stomach pain, diarrhea, low blood pressure, difficulty controlling urination (incontinence), thirst, and other serious side effects. Don’t touch pokeweed with your bare hands. Chemicals in the plant can pass though the skin and affect the blood.
Is pokeweed poisonous to humans?
Although all parts of the pokeweed ? berries, roots, leaves and stems ? are poisonous to humans, some folks take the risk of eating poke salad each spring.
What should you do if you touch pokeweed?
Unless severe, pokeweed rash can usually be treated at home. Treat it as you would poison oak by washing the skin thoroughly as soon as possible. Avoid scratching and apply calamine lotion to help dry and heal the injured skin.
Cannabis Purple Stems: Everything You Need To Know
A Guide To Cannabis Purple Stems | Homegrown Cannabis Co. Here You Will Find: What do purple stems mean on weed plants? Why are my cannabis stems turning purple? How to prevent cannabis purple stems How to fix cannabis purple stems The lowdown on purple cannabis stems Seeing unusual red and purple colors on your marijuana stalks that you’ve never noticed before? Don’t worry; it’s not always a bad thing. Cannabis purple stems aren’t a glaring sign that there’s an issue with your plants—they’re often the result of genetics. Join us to get the full scoop on purple stems on cannabis plants. We’ll explain what causes them to change color, how you can prevent it from happening, and how to get rid of the pigmentation once it’s developed. Let’s get started! What do purple stems mean on weed plants? Although the buds and leaves of cannabis crops regularly exhibit striking tones, the branches and stems are less prone to color variations. Marijuana plants typically have green stems and branches, but they can also take on a red or purple hue. If you start seeing red or purple weed stems, it could be from one of two things: GeneticsEnvironmental factors Most of the time, these unusual colors are nothing to worry about, but they may point towards an underlying issue in some cases. Why are my cannabis stems turning purple? Various factors can influence the color of your marijuana stems. Some of these elements elevate the bag appeal of your buds, while others are detrimental to your plants’ health. Here are some of the potential causes of red and purple cannabis stems: Stress Transplant or root shock after relocationPests or plaguesTemperature or humidity problemsLight or heat stressOverwatering Light intensity Purple stems on your weed plants can be a sign of stress. The faster you identify any issues, the quicker your crops can recover. It’s vital to inspect your plants if you’ve recently encountered some of these potential stressors: Intense light exposure often results in discolored stems. These vivid colors are expressed through the leaves and buds, but the stems can also produce a similar hue. In a way, this reaction is similar to human skin getting burned from the sun. Trimming and pruning result in more light penetration, so you may notice more pigmentation after defoliation. Low-stress training techniques also increase the development of pink, red, or purple cannabis stems. It’s normal for your plants to react this way to intense light exposure, provided they’re not responding to stress from cannabis light burn. Temperature Abrupt temperature fluctuations are a primary cause of cannabis purple stems. An outdoor marijuana plant with a day/night temperature range of 75℉–45℉ is more likely to produce red or purple stems than one with consistent levels. Temperature fluctuations in indoor grow rooms may be due to your specific light cycle for weed. Make sure the dark period isn’t more than 10–15℉ cooler than the light cycle. Some strains, collectively known as purple strains, are naturally engineered to respond to the production of anthocyanin. They develop red or purple tones on their foliage and stems. Growers purposefully expose these plants to cooler nighttime temperatures to showcase their gorgeous colors. If you notice red or purple stems on your weed crops after being in colder weather, keep an eye on them for a few days. Even more so if they’re…
Cannabis purple stems, how can I fix it? – Delicious Seeds
Blog – Cannabis purple stems, how can I fix it? If you’ve ever asked yourself this question: “Why does my weed plant have purple stems?”, you have come to the right post. Is it worrying? Am I in time to fix it? What exactly does it mean? From now on you will know what Cannabis purple stems means. Stems turning purple…Only for one reason? Absolutely not, stems turning purple for different reasons. Stress can be a cause (nutritional deficiency, pests, ph or light problems…), but there are also cases where you don’t have to worry. Let’s go step by step, we are sure you will identify your case. Let’s start with the least worrying, your plants are probably perfectly fine and you don’t need to know anything else. Strains with purple stems: Auto Dark Purple If you are worrying about a strain that is already purple and also characterized by a very dark foliage: Relax. You have in front of you a strain with purple stem. As you know, the world of marijuana is incredible, among many other things, because of the unique pigmentation of each strain. The best possible example is the Auto Dark Purple of Delicious Seeds: – Auto Dark Purple Yes, purple cannabis stems may be due to genetic. Anyway, beyond the color, you know better than anyone if something is going wrong. It is possible that this is your case, but you still don’t know what you have to change concretely so that your plant not only looks better but also works better. So, now let’s get down to business. What causes purple stems on cannabis plants As we have already mentioned, stress is the word that encompasses most of the things what causes purple stems on cannabis plants. But let’s get down to the specifics of your problem: – Fungus: Does the word Fusarium ring a bell? It is the pathology that can be giving a purple color to the stem of your weed. If your plant is large, you have many chances that you have been visited by this fungus, since it affects these specimens in a special way. – Ph: We have put it in second place, but the first thing you have to do if you have not yet found an explanation for this problem is to measure the pH. If it is too high or too low, it may very well be the cause of that reddish or purple tone. – Too cold: In this case, what may be causing your cannabis purple stems are too low temperatures. If you just turned on the bulb, try changing this which will probably change the color as well. – Insufficient nutrients: Many times we get complicated, and what causes purple stem weeds is a nutrient deficiency in our plant. Yes, as simple as that. There is one last factor that we haven’t talked about that also causes weed with purple stem. As you can imagine, we have not discussed it because it is not as important as the rest, and that is lighting. It is likely that if you use lighting methods with a lot of exposure to your crop, the color of the stem will turn red or purple. Don’t worry, it’s okay. If your plants look good, everything is going according to plan. As a final conclusion, we are left with this last sentence. If your grass looks good, don’t be alarmed. After all, if your plant has a problem, it will only be one more symptom of the problem.
How to fix cannabis stems that turn purple | Grow Weed Easy
How to fix cannabis stems that turn purple | Grow Weed Easyby Nebula HazeQuestion: Help! My cannabis plants are young (growing in soil indoors with sunlight and my leaves are medium sized) yet my main stems are turning purple from the top downwards. Have you seen this before?Answer: When a cannabis plant or seedling has a purple stem without any other signs of problems, it is often the result of genetics. However, sometimes you’ll see red stems (pictured below) which are often caused by light exposure (kind of like a “tan”), nutrient deficiencies, various types of stress, poor environment, or pH problems.Wait a week or two before making any alterations if your plant otherwise appears healthy and is growing fast. If there are no other symptoms and the rest of the plant is growing fast and healthy, red stems usually aren’t a big deal. As long as you’re continuing to take good care of your plant and responding quickly to any other problems, you should be okay.These red stems were caused by transplant shock and overall stress, but the clone just needed some TLC and time to grow out of it.Truly purple stems are often caused by geneticsIf you believe there is a nutrient problem with your cannabis plant, for example, if your plant is also growing slowly or the leaves are discolored, then the plant may be suffering from…Incorrect pH – The pH being too high or too low at the roots is the most common reason to see a nutrient deficiency)Magnesium deficiency can cause purple stems. A good cannabis-friendly nutrient system has a significant amount of magnesium, but if you’re using very soft water, or RO water, you may need to add a Cal-Mag to your nutrient regimen.Temperature – Heat or especially cold can trigger red stems in some places. Big temperature fluctuations can also do it even if the temperature is in a good range.Humidity – Very high or low humidity can stress plants (especially young seedlings)Other types of stress such as light burn, transplant shock, or overwatering can trigger red stemsSometimes you’ll never know why and plants just grow out of it 🙂Jump to…Cannabis plant problems by picture7 Steps to Cure 99% of Cannabis Growing ProblemsCannabis Nutrients: ExplainedHow to germinate cannabis seeds
What do Purple and Red Cannabis Stems Mean?
What do purple and red cannabis stems mean? Often your cannabis plants will have green stems and branches at harvest. But sometimes you will see striking red and purple colours appear and may have wondered why. Cannabis can often show pigmentation and rich colours in the leaves and buds. But the stem can also show colours and pigmentation. This can be a result of environmental factors and/or the result of the cannabis genetics. But in some cases, coloured stems can also indicate potential problems. Purple and red cannabis stems Many cannabis growers love seeing a flash of colour on their plants as harvest approaches. Buds with delicate hues of red, orange, purple etc often have greater bag appeal and can catch admiring glances. But cannabis plants can also produce pigmentation on branches and stems too. This can be beautiful to see, wonderful candy-coloured stems/branches add great visual appeal and increase the cultivation pleasure for any grower. If your cannabis plant is otherwise healthy, these colours are usually nothing to worry about. Just enjoy them. You can see red and purple coloured stems on plants grown from autoflower seeds, feminised seeds or regular cannabis seeds. But occasionally extra colours appearing on your stems/branches may signify potential problems. Light intensity When exposed to light, the normally green cannabis stem can develop colours thanks to the natural pigments present in cannabis. Normally these colours/pigments are expressed in the leaves and flowers. But the stem and branches can also develop pigmentation when exposed to light. This can mean pretty pastel shades of red, pink, purple or lilac can develop. Observant growers will have also noticed that the stems produce plenty of terpenes too, try rubbing the stem and then smelling the scent on your fingers.If you have recently de-foliated your cannabis plant, you may expose the stem/branches to more light which can cause the colouration. Growers that have used cannabis plant training techniques e.g. LST may also notice the onset of stem pigmentation. Temperature Many cannabis plants will exhibit a beautiful display of autumnal/fall colours in response to reduced temperatures as harvest draws near. Typically, these colours are most clearly noticeable on the leaves and cannabis buds. But cool temperatures also allow pigmentation to become visible in the stem and branches too. Some growers even deliberately decrease grow room temperatures during late bloom to induce pigmentation in the hope that it will increase bag-appeal and potential harvest value. Piling ice around the stem in late bloom is one such approach. Experienced growers will note that temperature reduction also comes with certain risks – reduce temperatures too much and you also reduce plant growth/metabolism. Plant stress If your cannabis plant is otherwise healthy and growing well, coloured stems and coloured branches is something to admire and enjoy rather than something to worry about. But occasionally plant stress can produce pigmentation, in these cases it’s important to identify the problem. In seedlings, the fungi Fusarium can cause brown stems which may quickly collapse as the plant dies and ‘damps off’. In mature plants, Botrytis (bud rot/mold fungi) can also create dark colours on your plant – these are indications of a serious disease which needs urgent attention. Nutrient deficiencies Nutrient deficiencies can produce a range of issues. These can include yellowing (or brown/dark colours) on leaves and stem. Phosphorus deficiency is one such issue, creating brown leaves with occasional red/purple pigmentation of the stem. However, to the experienced grower, it is usually clear when a plant is showing nutrient deficiency. Usually, with some experience, the grower can spot the difference between a healthy plant showing natural colours on the stems/branches vs an unhealthy plant which may…
Why are my marijuana plant stems purple?
Why are my marijuana plant stems purple? Seeing your marijuana plant with purple stems can be a little scary. You may become quite worried about the overall health of your plant, but this may not be as bad as you think. Below are some things you need to know about cannabis purple stems. Purple marijuana stemsSolution for purple stemsFAQ cannabis purple stems Purple marijuana stems Let’s say you are growing your plants indoors, the plants are still fairly young and the leave are average in size, but you notice the stems have turned a purple color starting from the top. Purple stem If you notice the stem of your seedling or marijuana plant has turned purple and there are no more indications of issues, this means their problem is genetic. There are certain marijuana strains that automatically grow with purple stems, more so when the seedlings are budding, or even once the plants start receiving cooler temperatures during the night. Solution for purple stems If your plant seems to be in good condition aside from the stems being purple, refrain from making any changes for a one or two weeks. The majority of the time the plants will turn green fairly quickly. Provided that your leaves appear to be healthy and there aren’t any of issues you are aware of, most likely the purple stems are nothing to be concerned about. If your marijuana plant is struggling to grow properly you might want to check out our list of nutrient deficiencies to get ahead of the issue! If you suspect that your marijuana plant may have a nutrient deficiency, maybe because the plant growth has slowed down or the color of the leaves is fading, then your plant could be magnesium deficient. This can sometimes create purples stems. Plant with all stems purple If this is the case, the issue will be resolved with ease by adding more magnesium the next time you water your marijuana plant. Here are some great magnesium sources for your plants: Epsom salt, just add 1 tablespoon per gallonCal-MagA nutrient solution that works well with marijuana has the proper amount of magnesium for your plants Make sure to download my free Grow Bible for more information about purple stems cannabis. Grow with my Quick Start GuideDiscover secrets to Big YieldsAvoid common grow mistakes Usually, your purple stem problem is nothing to worry about at all. But to be on the safe side check for any signs of magnesium deficiency. Take a look at our article on identifying magnesium deficiency for more detailed information. If there is no nutrient deficiency, then luckily, purple stem will only last for a short time. Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible Robert FAQ cannabis purple stems What causes purple stems If you notice the stem of your seedling or marijuana plant has turned purple and there are no more indications of issues, this means their problem is genetic. How do you treat purple stems If you suspect that your marijuana plant may have a nutrient deficiency. If this is the case, the issue will be resolved with ease by adding more magnesium the next time you water your marijuana plant. How do you fix weak stems? If it’s stretching, add more soil right up to the first set of leaves to strengthen the stem.
Why Do My Marijuana Plants Have Purple Stems, Stalks …
Why Do My Marijuana Plants Have Purple Stems, Stalks, Petioles?Purple stems on marijuana can be a sign of problems, or just genetics.© Copyright, Josh Keller, 2017By Josh Keller | Published: February 22, 2017Most cannabis growers worry if we see purple stems, stalks, and petioles on our marijuana plants.The color of leaves, stems, stalks, and petioles are a big part of our marijuana plant’s language as it tries to tell us if it’s happy or suffering.Purple stems may be telling you that your plants will grow slower, buds will form slowly, buds will be smaller and less developed.Purple stems, stalks, and petioles may be a warning sign of problems with nutrients, root zone pH, plant health, or grow room environment.A stressed cannabis plant will often have purple stems and other parts.But… some marijuana strains are genetically programmed to have purple stalks, stems, petioles, and leaves.Check out these beautiful purple marijuana strains, for example.You can discover if the strain you’re growing is genetically programmed to be purple by looking at strain descriptions, photos, and YouTube videos… and by asking the strain’s breeder.If your grow op has multiple strains all fed and lit the same way but only one strain is going purple, and if the purple strain is growing as well as all the other strains, you’ve probably got nothing to worry about.However if you’re growing multiple strains and most or all plants have purple stems, petioles, and stalks, you’ve likely got problems to diagnose and fix, especially if the strains aren’t known to be purple strains.The most common purple problems come from hydroponics nutrients disorders and root zone issues.Phosphorus and magnesium lockout or deficiencies are at the top of the list.(Read here about nutrients lockout).Purple stems can also come from nitrogen or potassium deficiencies or lockouts.Nutrients issues can be frustratingly complicated.Please look at this series of articles giving you a scientific way of diagnosing and fixing nutrients problems.Fixing magnesium deficiencies is easier than fixing phosphorus, nitrogen, or potassium problems.You root or foliar feed Epsom salts at a rate of ¼ teaspoon of Epsom salts per gallon root feed or a 130 ppm foliar feed at 5.7 pH.You can root feed Sensi Cal-Mag in grow phase and the first three weeks of bloom phase.In bloom phase, root feed Bud Candy, Bud Factor X, and Microbial Munch (all three have magnesium).Fixing phosphorus deficiency is challenging because there are few solo phosphorus supplements.If I suspect phosphorus deficiency, I add B-52 in grow phase, and B-52 and Big Bud in bloom phase.The B-52 provides added phosphorus, nitrogen, and potassium, along with B vitamins that help stressed plants.B-vitamins also increase bud development.Beware that most bloom boosters contain way too much phosphorus in relation to potassium.Inferior hydroponics base nutrients and supplements can create lockout and deficiencies, as can incorrect root zone pH, bad water, overwatering, and overfeeding.And if you routinely add a solo element like magnesium into your root zone, you may eventually create other problems, such as nutrients lockout.Only feed materials such as Epsom salts for one or two watering cycles, then stop using that material, and see what happens.If you’ve tried flushing, adding individual nutrient elements such as magnesium, eliminating grow room environmental problems, pests, and diseases, and you still have purple stems, petioles and other plant parts, watch your purpling plants closely.If they’re purple but they’re otherwise growing well, no worries.But if they’re growing slowly or not at all, if bud development is delayed and inadequate, if they’re not using much water or nutrients, this is most likely a sign of a defective strain.This is especially verified if you’re growing other strains in the exact same environment and they’re doing great.For example, I had a 3000-watt grow room with five different strains.Four strains grew fine and yielded big.One strain had purple stems starting three weeks into grow phase.I couldn’t fix it.Those plants grew slowly with weak…
All You Need To Know About Red Stems On Cannabis Plants
All You Need To Know About Red Stems On Cannabis Plants | Fast BudsAre red stems on cannabis a bad thing? Find out what causes it and how to fix it! Contents:1. Red stems on cannabis plants2. Light intensity3. Genetics4. Temperature5. Plant stress6. Nutrient deficiencies7. Ph levels7. a. How to test and adjust ph step-by-step8. In conclusionEven if everything in your garden is on point, you may see a couple of stems turning red or purple. Red stems often come with other symptoms such as yellowing, or burnt and clawing leaves, and these are found to be caused by 6 common things. Red or purple stems are often caused by lighting, genetics, temperature, stress, nutrient deficiencies, and pH levels, so read along and learn how to prevent it.1. Red Stems On Cannabis PlantsWhen you encounter red or purplish stems for the first time, it may be concerning but there are several things that can cause them and many of the reasons are not bad. While the main thing that causes red stems is genetics, things like temperature fluctuations, stress, and light intensity can also cause them.Red stems vs green stems on cannabis plants.This means that f your plant appears healthy, you don’t have to worry about it, it’s most likely caused by genetics but if the red stems come with yellowing, brown spots, or curly leaves, then you should definitely find out what’s causing it and fix it as soon as possible. So for those of you who are dealing with this issue, here are the main causes and how you can fix them to avoid more serious problems.2. Light IntensityIf the stems are exposed to strong direct lighting, they may turn purple, red, or pink. When this happens, the stems exposed to light will turn red but the lower stems remain green. This is a defense mechanism cannabis plants have against strong light, especially light fixtures that emit UV rays.Red stems are often more common when performing plant training techniques due to evening out the canopy, which exposes all stems to direct light. So if the majority of stems are green but you find a couple of red stems, there’s nothing to worry about as long as your plants are strong and healthy.SolutionNow, if your plants are showing red stems but they’re not 100% healthy, make sure you dim down your light fixture or adjust the height and keep an eye out on how they develop. If the problem persists, continue adjusting your light’s height until your plants are doing well. 3. GeneticsSome strains, especially those that tend to exhibit purple leaves or buds, can naturally grow pink, red, or purple stems. When red stems are caused by genetics, they usually develop a lighter pinkish or reddish color on all stems, not only on the ones that are getting direct light.if your plant is healthy then the purple stems are most likely caused by genetics.If this is the case, there’s no need to worry because it’s a genetic trait and won’t affect plant growth other than the different stem colors.4. TemperatureA 5 – 10 °C difference in…