Several Evening Sun Sunflowers at different stages of development on a white background.
Sunflower Seeds, Evening Sun
Several Evening Sun Sunflowers at different stages of development on a colorful stone background.
Closeup of an Evening Sun Sunflower against the blue sky.
Several Evening Sun Sunflowers at different color stages of development on a wooden background.
Several Evening Sun Sunflowers at different stages of development on a white background.
Sunflower Seeds, Evening Sun
Several Evening Sun Sunflowers at different stages of development on a colorful stone background.
Closeup of an Evening Sun Sunflower against the blue sky.
Several Evening Sun Sunflowers at different color stages of development on a wooden background.

Sunflower Seeds,
Evening Sun

4.328 ReviewsSKU: #FL733Min. seed count: 35
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Description

(Helianthus annuus). This beautiful variety has medium-large blooms in shades of burgundy, rust, bronze, bright yellow, and crimson, with many being bicolored. The 7-foot plants produce many flowers over a long season. This is one of our favorite varieties. Gorgeous!

Growing Tips: Evening Sun sunflowers thrive in full sun and rich soil with moderate soil moisture. They are easy to grow and attract pollinators such as bees and butterflies. Water regularly, but make sure that the soil doesn't become waterlogged, as they prefer drier conditions once established.

Plant Details

Botanical Name
Helianthus annuus
Life Cycle
Annual
Sun Requirement
8–12 hr.
Days to Germinate
7–14
Days to Maturity
80–100
Planting Depth
½ in.
Plant Spacing
18–24 in.
Ideal Temperature
65–75°F
Frost Hardy
No

When to Grow

Sow seeds directly outdoors after the last frost in spring, when the soil has warmed to at least 50 F, usually late spring to early summer. You can also start seeds indoors 2-3 weeks before the last frost, and carefully transplant them once the seedlings are hardened off. Timing is key, so be sure to check your local frost dates. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Sow seeds about 1/2 inch deep and space them 18-24 inches apart in well-prepared soil. Keep the soil moist until germination, which takes about 7-14 days. If planting in rows, make sure they have enough room to prevent overcrowding and to allow air circulation​.

How to Grow

Once established, Evening Sun sunflowers are relatively drought-tolerant, but they benefit from regular watering during dry spells. Taller plants may need staking to prevent them from toppling over, especially in windy conditions. Mulching around the plants will help retain soil moisture and keep weeds under control. These sunflowers will bloom from mid-summer to early fall.

How to Save Seeds

  • When petals die back and heads begin to dry and turn brown, place a paper bag over the heads to protect seeds from birds.
  • After a few days, the heads will dry to a dark brown. Bring the heads indoors and hang them upside down in a dry area in direct sunlight for up to a week, shaking seeds free each day.
  • Store seeds in a cool, dark, dry place.

FAQ

How much sunlight do Evening Sun sunflowers need?

They require at least 8-12 hours of full sun daily to grow and bloom properly.

Can I plant Evening Sun sunflowers in poor soil?

While they prefer nutrient-rich, well-draining soil, these sunflowers can tolerate poor soil if compost or organic matter is added to improve fertility​.

What can I do to prevent pests for Evening Sun sunflowers?

Monitor for common pests like aphids and caterpillars. Using neem oil or introducing beneficial insects such as ladybugs can help manage pest issues​.

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