Way too early for cukes, beans and summer squash - don't know about the swiss chard as I've never grown it.

Think more about lettuce and the cole crops - wait until after Mother's day for the others.

Hi
I planted my snow peas in March, and have put in my broccoli plants. In a week or two I will put in my bush stringbeans, then in May the squash, tomatoes, etc. You could put in your Swiss Chard around now.
Happy gardening!

Have planted out so far.

Potatoes
Swiss Chard Seeds
Peas Seeds
Onions bulbs
Lettuce transplants
Beets seeds
Carrots seeds
Broccoli transplants