You should try them again, if you like a long show of flowers in hundreds of sizes and colors! Yes, thrips can be bothersome to blooms; they're so tiny and hide deep inside buds doing damage before the flowers open. Creeps. But they are pretty easily controlled.
If you divide in the fall, (or just dig the whole clump) then rinse tubers/clump, and dip all in bleach water or fungicide water, that should kill off any eggs/pests that might be in your soil to later invade your crawlspace.
I think you should try a few
but keep some room for your veggies!
