Dish soap and water. Put it in a spray bottle and spray plant.
Hi kquirk, You may find the following docs helpful:
Organic Pest Control (for Aphids, use "Mix #1")
I purchased live ladybugs from Amazon and they ate them right up!! I have an indoor tower with lights and the ladybugs stay in the room with the tower for the most part. Purchased 1,500 of them for under $10.