Leaf curl!

[EarlyBird]

Hi folks,

Newbie here: I've got six seedlings/transplants in the ground and they are thriving, but my Cherokee Purple has just started to show some leaf curl in the past few days. About 10% of the small plant, just less than 12" high, is curling. I should point out that I have had to pinch off a few flowers which wanted to come in way too early.

None of the other plants are having leaf curl, though all plants have the same soil, amounts of water, weather conditions, etc. I've read that it may be related to either too much or too little water, or too much heat or wind, but if that was the case, it seems other plants would be doing this.

Do you know what the problem might be? Should I be worried? This is my one and only beefsteak, and I want it to be great since I planted it for my wife.

Thanks.