I have really long nights, never shorter than 11 hours. Some coleusses do great here, and some simply expire. Quite variable. There's a nursery right beside the main road, and they had a brilliant red/purple one that I couldn't live without. It's finally given up on me. I stopped by that place today, and they still have a tray of that one and they're looking pretty bad, dropped leaves and new leaves getting smaller and smaller. There are a couple of others that I am killing, also. Sedona is one, what a grouchy plant! Don't you just hate when that happens?
Funny how a plant will do that, keep growing but each new leaf is smaller. Someone gave me an African Violet once, the last leaves got to about 1/8 of an inch. Poor thing, a big stub with a few itty bitty leaves on top.
Then I have Electric Lime, Strawberry Drop, and Apocalypse that are real freight trains. But nothing compares to Swiss Sunshine, I'm considering making a hedge around the property out of that one. I have about fifteen big pots of Swiss Sunshine. A speck a half an inch long will root and grow!
I'll start a thread about my seed growing efforts once they arrive. I guess I shouldn't fight gravity, and go ahead and see if there are some other seeds out there that I "can't live without" sigh.