Planting dates
For spring, wait until frost danger has passed and the soil has warmed. Texas A&M’s crop guide gives a seed-zone temperature above 65°F and says sweet corn does not germinate below 50°F. For fall, start with your region’s row in the table.
Texas A&M: Sweet Corn crop guideYour region
Texas A&M gives average fall sweet-corn dates from July 1 in Region I to September 20 in Region V. Identify the gardening region before using a date. The table is an average, not a maturity guarantee for every variety or county.
Texas A&M: Fall Vegetable Gardening GuideTexas Region I
Fall planting: July 1
Texas A&M: Fall Vegetable Gardening GuideTexas Region II
Fall planting: August 10
Texas A&M: Fall Vegetable Gardening GuideTexas Region III
Fall planting: August 20
Texas A&M: Fall Vegetable Gardening GuideTexas Region IV
Fall planting: September 10
Texas A&M: Fall Vegetable Gardening GuideTexas Region V
Fall planting: September 20
Texas A&M: Fall Vegetable Gardening GuideHow to plant
Direct-sow sweet corn about 1 inch deep and 3 to 4 inches apart, then thin plants to 1 foot apart. Texas A&M recommends rows 2½ to 3 feet apart. Make several short rows or a block instead of one long row to help pollination.
Texas A&M: Easy Gardening, Sweet CornA second planting
If you have space, Texas A&M says a second planting can go in when the first plants have three to five leaves, usually 2 to 3 weeks later. Use the same temperature and frost checks for the second planting.
Texas A&M: Easy Gardening, Sweet CornChoose your next step
The spring soil is below 65°F
Wait for the seed-zone condition before direct sowing.You want a fall crop
Find your Texas gardening region and use its average date alongside the variety maturity information.Your garden has room for only one narrow row
Rework the layout into several short rows or a block before sowing so pollination has a better chance.Planting questions
Can I transplant sweet corn?
Texas A&M’s crop guide lists sweet corn as direct seeded.
Texas A&M: Sweet Corn crop guideWhy plant sweet corn in a block?
Texas A&M recommends several short rows because that makes cross-pollination between stalks easier.
Texas A&M: Easy Gardening, Sweet CornDoes a fall regional date guarantee harvest before frost?
No. The guide labels the dates average. Check the maturity information for the specific variety and local conditions.
Texas A&M: Fall Vegetable Gardening Guide