Cannabis FAQ

Big Purplish Bump on the Stalk of My Marijuana Plants

When you notice big purplish bumps on the stalk or leaves of your marijuana plants, it could be the result of Powdery mildew, a common fungus in the cannabis plant family. It could also be a nutrient deficiency, such as a lack of Nitrogen, Potassium, or Magnesium. The following article aims to shed some light on these symptoms.

Powdery mildew

If you have noticed big purplish bumps on the cannabis plant’s stalk, it may be due to powdery mildew. Luckily, this disease is easy to treat. First, adjust the temperature of the growing space to control the temperature. You may also want to remove the affected leaves and buds to avoid spreading it to other plants. Next, spray the affected plants with your chosen fungicide. If you don’t want to purchase expensive sprays, you can make your own.

This fungal disease is a nuisance. The symptoms are easily identifiable because of the white dust that accumulates on leaves and stems. You can also spot it on buds. It is important to treat the disease as soon as possible to prevent further damage to your plants. In addition to killing the powdery mildew, you should also monitor weather patterns and the type of marijuana you grow.

Symptoms of powdery mildew on marijuana plants include yellowing leaves, leaf disfiguration, and even the leaves of marijuana plants. The affected leaves will eventually twist and break off, but most leaves will be covered in the white spots. These symptoms are usually noticeable near the end of a growing season and are the result of poor airflow or the introduction of infected clones. If you suspect your plants are suffering from this disease, you may want to make sure they are kept as far away from other marijuana plants as possible.

Nitrogen deficiency

One of the signs of a nitrogen deficiency is the appearance of pale or yellow leaves. Some marijuana plants may even appear to have a curled leaf, a sign that their leaves have not received enough nitrogen. Another sign is fewer bud points on the plant. If these symptoms are evident, the best way to fix the problem is to reduce your plant’s nitrogen level or flush its container with water.

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Boron is another common sign of a nitrogen deficiency. Lower leaves will turn yellow or brown and appear burned. Younger leaves will curl upward or downward, making the plant vulnerable to diseases and pests. Potassium helps your marijuana plant grow strong and develop its leaves properly. If you notice any of these signs, you should immediately add a bit of Boric acid to the water.

Molybdenum is another mineral that is commonly deficient in marijuana plants. Although it is not as common as nitrogen, it can cause similar symptoms. This mineral is commonly found in soils with a pH below 7.0. It is necessary for the absorption of other nutrients and the production of carbohydrates. Your marijuana plants need magnesium to grow well. A few nutrients can be beneficial to them, depending on how much you grow.

Potassium deficiency

One of the most common reasons for these bumps is lack of potassium. If your plant lacks potassium, it will not be able to produce sugar or transport simple carbohydrates. It will also be stunted, with yellow leaves and small buds. Its leaves will curl and its internode spacing will become short. You can cure this by adding a potassium fertilizer to your marijuana plant.

When the plant lacks potassium, it will first appear on its older leaves. It will negatively affect the quality of its upper leaves. This can manifest as burnt tips or edges. The edges will also begin to yellow and become brown. When the leaves are yellow, they are also a sign of potassium deficiency. The leaves can also show other symptoms of potassium deficiency, including yellowing and burning leaves.

Another reason why marijuana plants develop big purplish bumps on the stem is due to lack of potassium. Potassium is one of the 3 major nutrients needed by cannabis plants and is represented by the second number on the nutrient bottle. When a cannabis plant lacks phosphorus, it will turn darker green. It will also curl downward and develop dark gray splotches. The stems of affected leaves will be bright red. Potassium deficiency can also be accompanied by calcium deficiency.

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Magnesium deficiency

When you grow marijuana, you should be aware of the common symptoms of magnesium deficiency. These bumps appear on the leaves of the plant, particularly on the middle and older leaves. You can spot this problem if you have high magnesium levels in your tap water, clay soils, or a high EC in the growing medium. These symptoms also indicate a magnesium deficiency.

Iron deficiency in marijuana can be hard to spot, but the symptoms are similar to magnesium deficiency. Iron deficiency affects the new growth of the plant more than the older leaves. The leaves will also turn light green or yellow and the stem will start to show big purplish bumps. Some strains may display these signs at the same time as calcium and magnesium deficiencies.

If you’re unsure whether your plants are suffering from magnesium deficiency, consider using foliar sprays to supply them with the mineral. These sprays will help deliver magnesium directly to the plant. In some cases, you can also try adding magnesium to the soil through fertilizer. It’s important to remember that the magnesium level should be 6.5 or higher.

In hydroponic systems, magnesium toxicity rarely happens, but you should still check the soil mineral content and nutrient levels. Dolomite lime is a natural source of magnesium and calcium and can be used to supply your plants with the minerals they need. Make sure to add it sparingly to the soil. Then, wait a few days for the cannabis plants to recover.

Heat stress

Cannabis plants can get large, purplish bumps on the stalk due to heat stress. This condition is not a sign of disease, but rather a sign that they need more water. If you notice these big bumps, you need to increase the temperature in your garden and give your plants more air. Poke holes in the soil to allow more air to enter and increase the humidity. Watering your marijuana plants in the morning and evening is a must. In case of prolonged exposure to sunlight, the leaves will curl and you will notice yellow or brown burn spots on the leaves.

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High temperatures can damage the cannabis plant. It can change the pistil color prematurely. Pistils are the female hairs in cannabis buds. They are white when they are in their flowering stage, but when the plants are exposed to excessive heat, the pistils will change color prematurely. Pistils should be white at the end of the life cycle. Cannabis plants are tolerant of short-term and continuous temperature levels that are over their ideal range, but too much heat will damage the plant and reduce its size and yield.

While heat stress can cause red stems on marijuana plants, it is most common in cannabis strains with dark foliage. It is not a cause for alarm; however, you should take note of any other symptoms that the plant may be exhibiting. Discoloured stems may also be the result of nutrient deficiency or overwatering. Regardless of the cause, a few extra minutes of TLC can help a cannabis plant recover.

Hermaphrodite origins

Hermaphrodite plants are a hybrid of male and female sex organs. Hermaphrodite plants develop male flowers when they are stressed by environmental triggers, such as too much or too little water. This makes the plant produce seeds before it is stressed again. The problem is that hermaphrodite plants must be checked daily to make sure they are not developing into a major hermaphrodite.

Cannabis plants can be hermaphrodite. Male flowers make pollen and touch the white hairs on the flower, creating seeds. These seeds, when consumed, can cause headaches. However, hermaphroditism has many benefits in nature and can prevent light poisoning, the most common of which is the regrowth of an old plant.

Cannabis plants can become hermaphroditic when they undergo extreme changes in temperature and photoperiod. Although herming is often a genetic trait, some growers consider these plants inferior. This is why they are prone to herming, but reputable breeders tend to select seeds from desirable plants. There is no one single cause for herming, and it is a result of natural selection, which is a part of the cannabis process.