New to forum so forgive me if this is addressed elsewhere. I read extensive postings and searched internet generally to no avail.
I've always landscaped with native, problem resistant plantings, and never used chemicals. However, I just moved into a new home and have powdery mildew / a few aphids on multiple rose bushes. Know I should probably just pull up bushes and plant something more resilient, but I hate to take the shovel to anything if there's an alternative.
Plentiful praying mantis / lace wings are keeping aphids controlled, but I still need to cure PD. I've picked off the worst damage, and was planning to spray product called Organicide (fish oil and lecithin) mixed with baking soda. Not confident about efficacy of this "fungicide", so I hate to risk killing beneficial mantis and lace wings. Anyone know if oil or baking soda is harmful to these little creatures?
Thanks so much for any feedback, Shana