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Leaf septoria on cannabis: Early signs
Cannabis leaf septoria vs. calcium deficiency: How to tell which is which
How to treat cannabis leaf septoria
Have you noticed small, yellow spots on weed leaves? Is the lower foliage of your cannabis plants changing color, withering, and falling off? Septoria might be affecting your crops. It’s a harmful condition that affects the quality, size, and yield of your marijuana plants. There are various ways to treat and prevent this disease.
Let’s take a look at how to treat leaf septoria.
What is leaf septoria?
Also known as yellow leaf spot, septoria is a disease that attacks the foliage of cannabis, potatoes, tomatoes, and eggplants. Septoria lycopersici is the fungus causing the condition and affects plants during their flowering stage. The first symptom is golden marks appearing on the blades.
The fungus likes growing in debris around plants. Its spores develop rapidly in damp, warm environments of around 60–80°F. After maturing, they access crops in the areas through water and wind.
This disease attacks the lower foliage first and spreads to the upper sections later. As leaf septoria on cannabis advances, it weakens the infected plant, so it doesn’t reach maturity.
If left untreated for a long time, this disease prevents plants from growing and destroys their foliage. This destruction stresses crops, reduces their quality, and decreases harvest size.
Does leaf septoria affect all parts of a weed plant?
Does septoria affect buds or spread to additional plant parts? This disease doesn’t often harm marijuana flowers but can infect autoflower seeds and other variations. It mostly attacks the leaves.
Leaf septoria on cannabis: Early signs
Before learning how to revive sick cannabis, you should know how to detect the disease as soon as possible. Look at leaf septoria’s early signs:
Changes in color
The first sign of the condition is a color change. The hue of the infected plant turns from green to yellow, with spots appearing in different places. After a while, marijuana crops become brown and start withering.
Cannabis leaf septoria vs. calcium deficiency: How to tell which is which
Cannabis leaf septoria and calcium deficiency often display similar signs, so it’s challenging to tell the difference between them. Some factors make it easy to differentiate between these conditions.
Color of the leaves
Leaf septoria turns marijuana plants yellow at the beginning, and they later become brown.
Calcium deficiency causes a plant to appear yellowish-green at the start. As the condition progresses, the plant becomes reddish-brown. Here you can find the answer to why leaves may turn yellow.
Weak roots and branches
While cannabis suffers from calcium deficiency, its roots and branches are weak, and the plant may fall over.
In the case of yellow spots on a weed leaf, the septoria fungus doesn’t weaken the marijuana plant at the beginning. As the disease advances, the whole crop becomes weak and could tip over during the late stages.
Position of the spots
The leaf septoria fungus starts attacking weed plants from the bottom. Yellow spots first appear on the blades close to the soil. You might be dealing with septoria leaf spots on cannabis if you see golden blemishes on the lower foliage.
If a plant doesn’t have enough calcium, yellowish-green spots may appear randomly on any leaf.
pH level of the soil
Checking the pH of your marijuana plants’ substrate could identify the problem. The crop might have leaf septoria if the range is within normal levels of 5.0–7.0.
If the pH of the growing medium is lower than the recommended range, the issue might be calcium deficiency in cannabis.
How to treat cannabis leaf septoria
Attend to the disease immediately to prevent it from destroying the affected plant. Here’s how to treat septoria leaf spots:
Remove infected leaves
If you discover leaf septoria or fusarium on weed plants, the infected parts can’t recover. The only solution is to get rid of them. Should you notice the signs on any blades, remove them immediately.
Use fungicides
Fungicides can kill a septoria infection and prevent spots on cannabis leaves from spreading. Spray organic or chemical products on the infected foliage. Try not to apply the liquid on weed buds to avoid contamination.
Apply essential oils
Neem, rosemary, cinnamon, lemon, and eucalyptus are essential oils you could use to stop leaf septoria. These aromatics treat cannabis leaf diseases and prevent them from spreading to other parts of your plants.
Essential oils are also helpful when dealing with pests and bugs on cannabis.
Increase airflow to the plants
Yellow spots on cannabis leaves spread in damp, warm conditions. If you increase the airflow around your plants, you may control the disease.
Maximize currents by installing an extra fan close to your weed crops. Another option is to space them further enough apart, so each receives enough air.
Remove unwanted vegetation from around your crops
The fungus spreads from the soil to nearby debris before affecting the surrounding cannabis crops. Treat leaf septoria on weed by removing all unwanted plants around your marijuana. Cut off any dead vegetation and foliage, too.
Monitor the humidity and temperature in the area
Hot conditions encourage the growth of leaf septoria. To stop the development of the infection, keep an eye on the humidity and temperature levels surrounding the affected weed. Reduce warmth and moisture to get rid of the fungus.
How to prevent leaf septoria
Don’t wait until leaf septoria attacks your marijuana. Prevent cannabis yellow spots on leaves by doing the following:
- Wash your hands before touching your cannabis plants.
- Leave enough space between your crops to allow unrestricted airflow between them.
- Maintain a clean environment, especially if you’re growing weed indoors. Ensure the humidity and temperature levels aren’t encouraging leaf septoria to thrive.
- Don’t overwater your plants to prevent the spread of diseases.
- Use mulch to stop septoria on cannabis from advancing from the soil to the lower leaves.
- Install an extra fan in your indoor garden.
- Rotate your marijuana crops from one season to another. Don’t grow your plants in the same place each year.
The bottom line
Leaf septoria can affect cannabis aroma and taste and is a menace to growers. After discovering yellow spots on weed leaves, treat the infection immediately to prevent damage to your harvest.
If you’re ready to grow quality marijuana crops, browse our range of top-quality, disease-free cannabis seeds today.
