Helianthus annuus
Packet contains 2 grams
For the most diverse sample of our sunflower collection, choose Sweet Sunflower Mix. This pollinator-friendly mix brings together stately Black Mammoth, fuzzy Sungold Dwarf and the warm hues of the Autumn Beauty Mix. A great choice for cut flowers, edible seeds, and attracting birds, bees and native pollinators to your garden.
Type: Annual
Days to bloom: 90
Seed Depth: 1 inch
Height: Various
Spacing: 20 inches final spacing. For each plant you want to end up with, loosen a 2-3' patch of ground down to 2' depth, and sow several clusters of 5-6 seeds, 6-8 apart. Thin the clumps to the best 4 when seedlings are 3" high, the best 2 when seedlings are a foot tall, and the best one when 2' tall.
When to sow: Direct sow after danger of frost has passed in spring/early summer. Sunflowers have long taproots and do not transplant well. Ambient temperatures should be above 50F.
Days to germination (under optimal conditions): 5-10
Light: Full sun-6-8 hours of direct sunlight a day- the more the better.
Water: Keep moist while seeds are germinating, then water regularly.
Soil: Well-drained, nutrient rich (sunflowers are heavy feeders). Sunflowers benefit from a slow-release fertilizer or fertigation with e.g. fish emulsion.
Pests: Slugs and snails will destroy seedlings. Protect developing seed heads from birds if you want to harvest seeds.