There are lots of benefits to using a cover crop in your giant pumpkin patch, learn more about them here.
Lithovit is a product I came across at the national fieldays. It is suitable for a wide variety of plants, giant pumpkins included. In this post I give you all the info about it.
Preparing the patch early allows me to make sure there are no weeds when I want to plant, this year I will be trying a cover crop.