Collecting sumac seeds in december

Question

Howdy I was wondering if you could help me. I noticed the dried up berries are still hanging on to the sumac trees and I’ve never grown them before, so I figured I’d give it a try. I grabbed a few of the bundles of seeds and took them home and put them in a zip lock baggy like I do most my seeds, but I noticed when you bust the dried berries open that the seeds are flat and don’t look any good.  But I was wondering if that’s how there supposed to look or not.

Answer 1

You should harvest seeds when they are dark brown and dry. Boil water, remove from heat and add seeds. Let them soak for 24 hours to improve germination rate. Give them a dormancy period in the refrigerator for about 30 days. Plant seeds outdoors when danger of frost has passed. Choose a sunny site with well draining soil. Plant them about 3/4 inch deep. Water well.
Sumacs are native to the U.S. and not too picky about care.

https://www.gardeningknowhow.com/ornamental/trees/sumac/sumac-tree-info.htm