- Acorns of the white oak group generally have little or no dormancy and will germinate almost immediately after falling. These species should usually be planted in the fall. Acorns of the black oak group exhibit variable dormancy and stratification is usually recommended before spring sowing. For best results, moist acorns should be held for 4 to 12 weeks at temperatures of 40 to 50 °F and can be placed in plastic bags without medium if turned frequently.
