Mine started off slow, but drastically picked up growth speed when planted in the ground mid July of last year. They do so much better in the soil than in containers. Just my experience. I had the opposite findings with other varieties of hot peppers. I was tripping over Purple Jalapenos come September. I live in Zone 6B.

Chris

I also notice that 3 of 4 seedlings are purple and one is all green. possible bad seed?

Not unusual for there to be color variation, especially with the foliage.

John

I planted a few Purple Jalapeno seeds and the starter leaves were purplish and the second set of leaves were normal green like most hot peppers. Is this normal?