#1)Don't panic. They may well be aphids, there are many kinds. They won't kill anything overnight!
More info would help, though. Do you know which sedum you have? If it has large leaves, try wiping them off with a dish cloth dipped in soap suds.
There are some great recipes for simple sprays made form dish soap, vegetable oil and other things that are VERY effective. Get your hands on a clean squirt bottle, you can get one for a dollar at any discount store for a buck. A squirt of dish soap and a few drops of oil in a few ounces of water is roughly what is called for, but someone else should come along with a sure-fire recipe soon!

I just found 1 black bug on my croton petra norma. I spray the leaves just about every day with water. So I guess I can try this same thing with the soap/oil and water? I looked over the leaves and so far I only saw the one so hopefully I am catching this early. I also noticed a gnat or that's what I thought it was flying around also. I have number of different house plants all babies still. Schefflera, croton, umbrella plant, song of India, Dracaena janet Craig, english ivy, Sanseviera trifasciata 'Hahnii', sanderiana, golden pothos,and an aloe Vera plant. They are all on a storage shelf about a foot away from my east facing window. ( at least I believe it's an east facing window I am directional challenged in that way) However, I did notice that my pothos has some leaves that look a little eaten. So I guess I should wash them all down with this solution?
My plants have been doing so well thanks to all the help from this website, I hope I can fight off any insect problems. thanks for any advice

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Myrna R

life is like a box chocolates you never know what you are going to get (unless you pop the bottoms in first!)