like corn they like the daytime heat and night time cool. They can grow several feet in one night. I got mine in very late and I doubt I will get anything from them Its only going to be in the mid 80's here today, but feeling like 100 because of 80+ % humidity. 

each, it is an expensive fruit to love. Unfortunately, I don't think we have the right environment to grow them because our pumpkins are doing much better than the watermelon right now. So, I'll just live through your pics and hope ours will produce one or 2 of their own.