Sow at a depth of approx.
0.49 inches (1.25 cm) and aim for a distance of at least
5.85 inches (15.0 cm) between Lettuce plants. For optimal germination, soil temperature should be a minimum of
5°C / 41°F.
By our calculations, you should look at sowing Mighty Red Oak about 60 days before your last frost date.
Mighty Red Oak is tender, so ensure you wait until all danger of frost has passed in your area before considering planting outside.
By our calculations, you should look at planting out Mighty Red Oak about 45 days before your last frost date.