It sucks when you have sick plants. It’s similar to having a sick child or a sick pet. It’s hard to watch something near and dear to you become sick and suffer, even if it’s just a plant. Cannabis plants are more than “just a plant”. They are the result of months of blood, sweat, and tears.
Some cannabis plants are heartier than others. Certain strains are more susceptible to rot. Others tend to mold or become infested with mites. It’s important for you to be able to spot the signs of a sick plant, you know, before it’s too late.
Did your plants’ leaves turn yellow all of a sudden? You definitely have sick plants on your hands. Your plants most likely have the beginning stages of rot. Bud rot is easy to fix, as long as you get to it in time. Try turning up the heat a little more. Cold plants are more prone to rot. Make sure your plants are in an environment warmer than 68 degrees F/ 20 degrees C. The humidity in your grow room could also be too high. It may help to trim your plants, so they’re less bushy. Lastly, trim the infected buds ASAP, lest they infect the healthy plants!
Flowers Turning Brown
Are your flowers turning brown and subsequently dying? You could have broad mites. Despite what the name suggests, broad mites are incredibly small and very difficult to see. Mites will make your flowers turn brown and die if they are not taken care of. Take a look at your new growth. Does it look wet and slightly twisted, like a scary old tree? You’ve most certainly got mites. Luckily, there are sprays you can get to treat mites. Make sure you spray them daily!
Dead Spots and Crinkly Leaves
Do your sick plants have dead (brown) spots and leaves that are starting to crinkle up? There’s a strong plant that your plants have a calcium deficiency. Another tell-tale sign is that your plants appear to not be growing, or the new growth appears smaller than it should. Typically with calcium deficiencies there are deficiencies in other nutrients as well. The best way to do this is with a calcium supplement. Your best bet is to use a cal-mag (calcium and magnesium) supplement.
Leaves that are Yellowish Brown Directly Under the Lights
If the leaves directly under your lights are starting to turn an ugly shade of yellowish brown, then there’s a good chance that your sick plants have a case of light burn. This malady isn’t as serious as some of the other ones. This is more common among the older leaves, the ones that have been exposed to light the longest. Light burn is often a sign of a nitrogen deficiency. The best thing you can do first of all is move your lights further away from your plants, or tilt your plants away from the lights. Reducing your light intensity might help, as well as a nitrogen supplelment.
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Do you have any advice for others with sick plants? Tell us in the comment section!