Ash Tree Seeds
How do I grow Ash trees from seed?
Certified GKH Gardening Expert
These seeds normally require cold treatment prior to planting but once this is achieved, you can plant the seed in some potting mix as with most any plant. Once the little tree is big enough, usually after a whole season, you can plant out to its permanent location. Here is more information: http://store.msuextension.org/publications/YardandGarden/MT199604AG.pdf