My Collards grow SO big due to the COMPOSTING in PLACE. I also show Swiss Chard too that grows big. Below here is a link on how I compost in place with no turning, simple and perfect for my plants to grow big, with little or no work: NO COMPOST Piles for ME! DUMP PLANT NOW https://www.youtube.com/watch?v=p-kcnRrKrGI&lc=z23efnux0laxilxhn04t1aokg4ppkirncnevvu4oegj4rk0h00410 (OH, I was wearing a "tube top" as it was almost 100 degrees and HOT, my husband took this funny pic as I was going through my collard in the garden.)