Start seeds indoors six weeks before last frost date.
Aim to sow 0.78 inches (2.0 cm) deep and try to ensure a gap of at least 0.78 inches (2.0 cm). Soil temperature should be kept higher than 12°C / 54°F to ensure good germination.By our calculations, you should look at sowing Sioux about 42 days before your last frost date.
Plant to the first set of true leaves to promote strong root growth.
As Sioux is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.This tomato is either dated to 1944 or 1947, and was made by the Department of Horticulture, Nebraska Agricultural Experiment Station, Univ. of Nebraska, Lincoln. It’s parent tomatoes are Stokesdale x Allred cross.