in the North there is 2 schools of thought on brassica plantings:

1. Plant in Late spring ( June)-Allow plants to put put on as much growth as possible. Some varieties flower (this is not a good thing) you should mow the tops off when this occurs. Large Brassicas like Kale - canb get Hip-High come fall.

2. Plant in Mid July - You get the best growth - going into fall - without goining to seed. The leaves are young (less than 1 ft) and tasty - even before frosts - but plants are not as large.

When planting later plots of brassicas - its a good idea to put down a couple hundred lbs/acre 20-20-20 or similar fertizer. On more fertile grounds, just Nitrogen applications might be advised.

FH