Jason - welcome to the forum. My question is how deep did you plant your starts? Planting too deep could result in lots of leaves but no stalks. The heat is another issue. In south Louisiana we plant celery seed directly in the soil in late summer early fall for late spring harvest.
Elizabeth - or Your Majesty
Living and growing in Lafayette, La.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant. ~Author Unknown