Height - 3 to 4 ft Flower Color - Yellow Blooms - August - September Sun - Sun to part sun Hardy Zone - 4 to 9 Soil - Moist to dry Family - Asteraceae
Nectar Source - Bees: bumblebees, Miner bees, large Leaf-cutting bees, Cuckoo bees, Green Metallic bees, and other Halictid bees. Occasionally other insects visit this plant including bee flies and butterflies.
Host Plant -For the caterpillars of the butterfly - Silvery Checkerspot and Gorgone Checkerspot
Seed - For birds - Finally after three years I have enough Early Sunflower plants in my yard that there is plenty for me to harvest and share with the birds.
This Plant is listed as Threatened in the State of Ohio
Downy Sunflower Nodding Onion Gardens
Propagation Notes -
Collecting Seed - Songbirds gobble these seeds in a blink of an eye. Use empty onion bags to protect seed. To ensure adequate pollination wait until later in the fall to cover see.
Outside - Collect seed in fall, plant in a protected flat. If the winter is warm and dry check periodically to be sure seed remains moist. Refrigerator Cold Storage - 30 days - Small Zip lock plastic bag with a few table spoons of moistened vermiculite
Seeds Planted - 2-12-2012
Sprouted - 2-25-2012 -
Night Temperature - 61 - 63°F(in house)
Day Temperature - 64 - 65°F -Under florescent lights
Natural Sunlight - 3-6-12 - Exposed a few hours each day to natural sunlight