Hi
@Jeanpol! Yep, those pistils didn't like your treatment. Avoid spraying anything onto buds, especially chemicals, you may ruin your final product, or even worst, loose your yield. As soon as pre flowers are building up, don't spray, but you can use a sponge to deploy your treatment onto leaves, if really needed (it takes more time but don't harm the bud-sites) I think they will recover if you stop spraying, but those buds might be affected and you may loose some weight. Keep us up-to-date and happy growing 👊