It’s not uncommon for basil, a relatively delicate annual, to begin to fail. It’s impossible for us to know exactly why. If it’s downy mildew there is nothing you can do about it. It can be brought in on transplants, in infected seed, or as airborne spores.
Are you letting the soil dry out before watering? Too much water can drown the plants. Are they getting adequate sun? Too much water, not enough sun——and heat——can cause it to fail.
And it could be something else, too.
A reader writes, Sounds like it could be spider mites. They can look brown with black spots…they’re leaf damage leaves brown thinning with black specks. Another reader suggests it could be whiteflies. Click here for more: https://www.almanac.com/pest/whiteflies
It could be aphids. Read more about these here: https://www.almanac.com/pest/aphids
It’s not uncommon for basil, a relatively delicate annual, to begin to fail. It’s impossible for us to know exactly why. If it’s downy mildew there is nothing you can do about it. It can be brought in on transplants, in infected seed, or as airborne spores.
Are you letting the soil dry out before watering? Too much water can drown the plants. Are they getting adequate sun? Too much water, not enough sun——and heat——can cause it to fail.
And it could be something else, too.
A reader writes, Sounds like it could be spider mites. They can look brown with black spots…they’re leaf damage leaves brown thinning with black specks. Another reader suggests it could be whiteflies. Click here for more: https://www.almanac.com/pest/whiteflies
It could be aphids. Read more about these here: https://www.almanac.com/pest/aphids
We hope this helps.