How To Grow Sunflowers From Seeds In Texas. I recommend planting cowpeas and buckwheat in the summer, and a mix of hairy vetch and clover in the fall, winter, and spring as cover crops. They have great customer service and fast shipping.
Cut the head off the plant leaving about 6 inches of stem. Cover and keep watered until seeds sprout in 7 to 10 days. Though procuts germinate consistently, sunflower sprouts are a favorite of squirrels and rabbits, and a few sprouts will always be lost to garden pests.
You’ll thin out the weaker seedling before transplanting.
In sandy soil, 2 inches deep is better. When first true leaves appear (the second set of leaves); Many of the plants are harvested for the seeds which will be crushed into sunflower oil. Water well and keep the soil moist.