I have some bat guano when is the best time to give my plants it they are still seedlings waiting to sprout but i was just wondering if i should give it to them when they sprout or during flowering or what. thanks
don't feed 'em until t he seedlings are 2.5-3 weeks old. Feeding too soon can burn them (or even kill 'em)
If it's Bat Guano, you're fine to feed anytime. Organic nutes like bat guano, worm castings, and the like don't cause nute burn, for reasons I don't understand. Something about the byproduct of the chemical ferts builds up in the leaves, which then dry out easier than they should, which burns the plant. I guess organic ferts don't have any of the chemicals in them that build up in the leaves, so no burn.