I went to my local Lowe's and Home Depot and Wal-Mart. Was told at all three places that in this area of zone 7 we use 10-10-10. No wonder I couldn't find the 20-20-20. Have a nursery right around the corner from me. Will go there when they are open and check with them since they grow locally. Just wanted to share this in case someone else wonders why they can't find the 20-20-20. Could be the same reason.
That is my one thing I learned today.