Benzelsanswered grow question 3 years ago First of all, keep in mind healthy plants rarely suffer from many issues. They are strong enough to deal with a few bugs and not get infested as the natural ecology around the garden keeps things in check. I HATE using sprays of any kind if I can help it, and would rather chop and infested plant that treat it as if its infested its sick and weak and either means poor genetics, or I did something wrong and the plant got sick. Over watering is a prime example- the roots cant breathe and get root rot, this makes the whole plant weak and sick for the rest of its life, and if bugs come along that plant is likely to get infested and eventually either die or produce a low yield of weak buds.
Because I rarely use sprays- I have lots, like LOTS of spiders, wasps and other predators that eat the pests if they start to build up in numbers....if the food source goes up, so do the number of predators. But if your relying on sprays to fix all your probs, then you have missed the point...You need to start with keeping the plant healthy- this starts with making sure the roots can breathe- even if mother nature goes mental and dumps tropical rain for 4 days straight on somewhere that is almost a desert in summer normally...like what happened to me. Didnt plant on tropical rain so didnt add enough drainage to my garden beds this year, and one plant got waterlogged, got sick and has been weak ever since- and looks like im going to have to rip her out due to bud rot now too. 6 weeks early...urgg. My point is, if you keep em healthy you wont need sprays, but honestly there are so many good ones out there now- as long as its organic and safe for food crops, you can use anything really. I put down sugar cane mulch and that seems to keep out slugs and snails too. And plant other things like flowers or herbs around the garden if you can as they will attract good bugs too ok. And Autos are even tougher lil plants so odds are you wont need anything if the plant is healthy.