I might be because you aren't watering them enough. They might need some every day. But not sure. It's not too hot here most of the time and it has just rained here so much this time of year for the last couple of years that we can't get our veggies to really go yet. Our flowers look great though. I would try watering them everyday for a bit. Not sure how much, but they may come back if you do. It's worth a try anyway.
Did you plant them all in full-sun? I know the first picture you have has to have full sun. If you did, then try watering more.
Ethan - June 21, 2009
Olivia - December 5, 2010
5w3d - October/November 2012
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