I just checked all my roses seedlings after taking my back yard shower on this lovely day.....they are 100% FREE of aphids just a few days after I gave them that drench of strong Neem leaf tea! A week ago they were COVERED with them, something I've dealt with annually since I started breeding roses in Denver in 1993. Thank you so much Vicki Nettles Parsons for giving me that baby Neem tree years ago when you and your employees came here to take a class. FINALLY a solution! I was going to spray but gave a drench as you suggested since you grow a large scale Neem tree farm east of Tampa....it worked! John