- 1). Obtain black walnuts ideal for germination. For timber production, select walnuts from trees with a high-quality trunk. For nut production, choose those in which the walnut fills a high percentage of the kernel.
- 2). Fill a bucket with water. Place the black walnuts, still in their husks, into the water. Check the walnuts periodically, and when the husks have softened enough to remove them by hand, take the walnuts from the water and remove all husks.
- 3). Rinse the nuts in a clean bucket of water. Discard any nuts that float, as their quality isn't high enough to make them worth planting.
- 4). Place the husked black walnuts into a plastic bag or coffee can. Put the container in a refrigerator where their temperature will remain between 34 and 41 degrees F. Leave them for 90 to 120 days.
- 5). After the last frost in spring, dig holes 1 to 2 inches deep in the location you intend the walnuts to germinate and grow into seedlings.
- 6). Place two black walnuts into each hole and cover with soil. Water thoroughly. Within four or five weeks, about half the walnuts will germinate.
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