Chow_13answered grow question 3 years ago Do NOT use neem oil on flowering plants. dish soap and water can be used to help control them. Make sure its a detergent free soap. Aphids will usually stay away from anything with crystals on them till all the fan leaves are eaten. If you have the time get a sprayer, put a bag around your pots and tape it to the stem to avoid getting soapy water in your coco/soil. Carefully go over every fan leaf top and bottom and spray it with a soapwater mixture. let it sit for 10 or so min then rinse with regular water. This will help keep them under control until harvest.