A strong spray of water will easily kill aphids. Not so strong as to harm plants (even the force of a hand held sprayer is enough) just enough so you can knock them down. They are such soft bodied critters that the water crushes them. Repeat it every 3 days or so until you have them under control.

tj

That's a plan I can live with! I was going to hit them with water today, but the rain stopped me. I didn't think a double dose of water would be good for any of the succulents.

If this fails, I may may be back with another plea for help.

The Neem might discolour the Kalanchoe. Soapy water (some dish detergent in a spray bottle of water) will kill them too.

I have several things to hit with the soapy water tomorrow - hibiscus, crotons, podocarpus (I hate those! LOL) and dracaena. I think I will hit the Kalanchoe first, then blast it with water after I have finished up. I may wait another day, depending on the weather. After this rain, they are predicting a low of 43. I don't like that combination for my succulents.

By the way - I asked a local nursery about aphids on my Kalanchoe blossfeldiana last year. They told me to use Ortho Bug-B-Gone, that's what they use. I did as instructed with disastrous results. So that's why I am asking the experts here! (And I don't visit that nursery any more!)

And yes - I have ants. It's Florida. I have ants everywhere, even with a monthly pest control.