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cannabis growing troubleshooting

Cannabis growing troubleshooting

Similar to spider mites, aphids hang out on the undersides of the fan leaves, but they are green and have long legs almost like a grasshopper. They are pretty tiny as well so I also recommend using the trichome scope for looking at aphids on your leaves. You will see them crawling around and what aphids do is suck the nutrients and water out of your fan leaves, which causes them to wilt and die.

The early signs of spider mites includes lots of tiny and light-colored spots on your leaves. It will look like speckles as the dots are so small and close together.

(Read also: Keeping Bugs Off Your Nugs)

Spider mites, and most other pests, hide on the undersides of your fan leaves so always check that part of the plant as well.

cannabis leaves infested with aphids

Nutrient burn is another common issue beginners and even expert growers often face, as they tend to get overzealous with feeding their plants. When it comes to nutrients, less is always more!

Nutrient burn is essentially what happens to your plants when you’ve been feeding them too strong of a nutrient mix, and/or too frequently. The edges of your leaves will begin to brown and look crispy like they were burned, and growth will slow down drastically.

This is the easiest way to tell if your plant is experiencing heat stress and all you have to do to fix it is lower the temp to the appropriate levels.

Spider Mites

Whenever the tops of your plants are too close to the grow lights above, it will cause the leaves to yellow and burn. The easiest way to spot this problem is to look out for the leaves that are closest to the light; they will begin turning yellow first and then it will spread to other areas to the plant.

The best way to stop the rot from spreading is by first increasing airflow and lowering the humidity in the grow room. Next, you’ll want to cut off all the buds that are infected. Mentally, it is hard to do, but if they have any amount of rot on them, the bud is useless and can make you sick if smoked.

Cannabis growing troubleshooting

Nutrient burn is a common grow issue, but some symptoms look similar yet are caused by something else. This tutorial will help you determine the true source of the problem.

Step 1: Verify Watering Habits & Root Health

High Pressure Sodium (HPS) lights have the meanest reputation for ‘light-stressing’ plants, but many of the newer, more powerful LEDs (Light Emitting Diodes) do it, too!

Step 5: Diagnose Pests (sometimes you never actually see the bugs)

Sometimes you don’t see bugs. Thrips are an example of a pest that leaves markings on the leaves which can be mistaken for deficiencies, yet you rarely see the bugs themselves.