I'm wondering if its a form of quince - Chaenomeles japonica. Has thorny branches, fruit is produced virtually stalkless, branches are quite dark in colour, drops its leaves in winter. Does grow in your USDA zone, although fruit production is sometimes compromised for various reasons to do with climate. Tolerates shade very well.
Bamboo
- 135.2k
- 3
- 80
- 168