Home made Marijuana pest spray

A question from a fellow grower:

I haveing a little problem the levies r turning yellow & drying up ? I made a home pest spray, it has in it, garlic 3 jalapeno 1 onion dish soap, do think I could has burn them, its been getting up in the 100 degree mark, they get about 9 hrs of Sun our little more

I think 100 degrees in the Sun is your biggest issue.

How old?

What nutrients?

What medium?

Many things can cause this issue, but spraying home made bug sprat is probably not going to help. Why do think it is bugs?