No, you have to inject them. Get a needle used for injecting insulin or a glue syringe. I use distilled water - bring it to a boil in a 3 quart saucepan, rush it to the table by the aquarium, fill the syringes and stab and inject the rock anemones. This won't hurt the other inhabitants of your aquarium if you limit the water to four or five syringes full at a time.
There are some substances you buy, the latest being Joe's Juice I think, that you just squirt on them.