What is the best month to plant sunflower seeds?
Growing sunflowers from seed is super easy, too. Plant seeds after the danger of spring frost has passed and the soil temperature is at least 60 degrees. This will be between March and May, depending on where you live. Plant the seeds no more than an inch deep and about 6 inches apart.
The massive bright yellow blooms have feathery petals and large chocolate brown centers full of seeds. Thin-shelled, striped seeds are plump and meaty with high oil content. Plants grow 6-12' tall and produce flowers that range from 10-12″ across.
Sunflower seeds can be planted directly into the garden soil.
Sow seed directly into the garden in late spring to early summer or start seeds indoors in 4 weeks before spring frost danger has ended.
Plant seeds 1” deep and 6” apart. They should come up in 8-10 days depending on the soil temperature and grow quickly in warm weather. After the seeds sprout thin plants to at least 12" apart. First blooms appear 60-90 days after emergence.
They grow well in poor soil and will tolerate heat and dry conditions.