How tall do black oil sunflowers get?
They typically grow tall on a single stem, often 5 to 10 feet, so give them a sunny, sheltered spot and stake them in windy gardens.
When and how do I plant sunflower seeds?
Sow directly after the last frost, about an inch deep in full sun once the soil is warm. They sprout quickly, in about 7 to 10 days.
How far apart should I space sunflowers?
Space plants about 6 to 18 inches apart. Closer spacing gives smaller heads on slimmer stems, while wider spacing produces larger flowers.
Are black oil sunflower seeds good for birds?
Yes, they are a favorite of songbirds. Leave the mature heads standing in the garden as a natural feeder, or dry them and offer the seeds later.
How do I harvest sunflower seeds?
Let the heads mature until the backs turn brown and the seeds are plump, then cut and dry them in an airy spot and rub the seeds free to roast or store.
Are sunflowers good for pollinators?
Very. While in bloom, the big flowers are alive with bees and other pollinators, and later the seeds feed the birds.
Q: “What is your shelf life? What conditions to store?”
You can easily store it for 3 years.
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