We are working on the proper ID of this Juglans regia hybrid but it appers to share more traits with J cinerea (Butternut) than J manchushica (Manchurian walnut) thus the tenative J quadrangulata designation.
Regardless, this happy Sept 2023 find is a gorgeous tree. Prolific nut producer too. No noted disease or structural issues with this strongly built tree. If not for yourself, it will make for awesome wildlife habitat whether it be birds nesting in its branches or tucking nuts away for the winter.
We suspect it inherits better cold hardiness from its non J regia (English walnut) parent.
- Seed Count: 7-8
- Collection Date: Oct 2023
- Hardiness Zone: 5-9
- Height x Width: 20m x 20m
- Germination test type: smash
How to germinate Julglans regia hybrid seeds:
Stored in moist peat at 4C for prompt spring germination. Sow nuts 3 cm deep in a sowing layer consisting of equal parts peat, compost, and coarse sand. Use deep pots as this species puts down a very large tap root. Apply a thin top layer of fine mulch. Needs 90-120 days of cold stratification to germinate at 20 C in the spring/early summer. Alternate germination technique: baggie sow the nuts in a large clear plastic bag and mix nuts with just moist medium of equal parts coarse sand and peat. Check bag and pluck out sprouters as the spring progresses. Check bag often. We get better germination via baggie than direct or pot sowings.