harvest any time- i usually start with baby at a couple of inches tall... it will regrow. gets hotter once it starts to flower.

they are extremely resilient. Just cut away whenever a leaf is 2" or larger, make sure you don't cut into the stem....

Yup, what they said.

The youngest leaves are tastiest.

Thanks! That supports what I was thinking - what I planted was just about ready for first small harvest. Looking forward to it!