Brussels Sprouts -- too close together?
The other day I planted out four wee brussels sprout plants (Jade E Cross) that came home with me from the local nursery:
I know it's rather early, but since they're on a raised bed and under covered hoops at night, I figured they'd be warm enough -- although the 80 degree temps the other day caused a bit of a scramble to keep them cool!
Question I have is: did I put them in too close together? They're currently about 12 inches apart from one another, a la' the square foot gardening method and Barbara Hyde's "Gardening in the Mountain West" series, but now I'm wondering if this will be OK, as many other sources recommend 18-24 inches.
Any thoughts would be more than welcome. :)