Jonathan Trovillion

I would like to offer up alternatives to painted daisies in achieving your goal....
Bt works very well on cabbage moth caterpillars without jeopardizing pollinators. In combination with row covers at planting, you could increase you harvests. Another possibility I have read here on permies is to concentrate your plantings of brassicas to very early spring and mid-late fall, when cabbage moths/caterpillars are not present.

You haven't stated what kind of squash you intend to plant, but I am assuming that it would be a winter storage variety. I have found over the last 2 years that the "Tahitian melon squash" which is basically a butternut on steroids, has survived squash bugs and given me a crop. I will be trialing these squash again this year to see if these observations hold true. I got my original seed from Baker Creek.

Hopefully some of these alternatives can be utilized until you can get a definitive answer about the painted daisies.

Here's a link that you may find interesting even though it is mostly addressing the pesticide and not the flower.

https://www.pesticide.org/pesticide_factsheets

Wow! I was intrigued by your question and did a little googling myself. It's very confusing, as there seems to be little distinction between using the plant and using the plant based insecticide.

Amazingly painted daisy also show up on lists to attract pollinators. Which I find disturbing.

One article I found very conclusively blatantly stated pyrethrum in any state to be very bad for a vast number of insects and aquatic life..

With the conflicting information, and the potential to do harm to the good bugs, maybe other alternative should be embraced.

Best of luck