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Date of Seeding
Young seedlings are very sensitive to frost, so seeding should be delayed until all danger of spring frost is past. Buckwheat seed germinates best when the soil temperature is about 80 degrees F but will germinate at any temperature between 45 to 105 degrees F. Seeding in early June is suggested. Delayed seeding will allow time for additional weed control and for the soil to warm up, and may help the crop escape the hot, dry portion of summer. Any type of stress, especially at flowering, can result in a poor seed set. Delayed seeding, however, does increase risk of fall frost. Buckwheat seeding should be timed to allow plant growth to take place in warm weather and the seed to form in the cool weather of late summer.
Data from North Dakota indicate that tame buckwheat must have a generous moisture supply for good production. Good stands of this branching plant do not necessarily insure good yields. Uniform stands are sometimes hard to obtain due to cool soil temperatures during germination. Later dates of planting result in a shorter growth period, shorter plants, slightly lighter seed and lower bushel weights.
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