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Sunflower Seeds, Red Sun
Description
(Helianthus annuus). These stately branching plants reaching 5-6 feet tall are covered with dozens of ornamental blooms. Red to red-orange single flowers are highlighted with a hint of yellow around the centers. Blooms over a very long season, attracting bees and butterflies. After blooming, the tiny seeds will attract birds.
- Annual
- 60-70 days to maturity
- 8-12 hours of full sun
- Sprouts in 7-14 days
- Seed Depth: 1/2"
- Plant Spacing: 18-24"
- Ideal Temperature: 60-75 F
- Frost Hardy: No
Growing Tips, Tricks and FAQs
Growing Tips
The Red Sun sunflower is best suited for gardens that receive full sun and have well-draining soil. This will improve growth and create more beautiful blooms. While fairly hardy, the Red Sun sunflower can use occasional fertilizing with a balanced, organic fertilizer for better growth.
When to Grow
It’s best to plant Red Sun sunflower seeds after the danger of frost has passed in the spring. Since frost dates vary by region, you should consult local frost date predictions for your USDA hardiness zone. Alternatively, you can start seeds indoors 2-3 weeks before the last frost, and carefully transplant the seedlings later.
How to Sow and Plant
To sow Red Sun sunflowers, plant seeds about 1/2 inch deep directly in the garden bed once the soil has warmed to around 60-70 F. Space seeds 18-24 inches apart to give each plant enough room to grow. Germination typically takes between 7 and 14 days, during which it’s important to keep the soil consistently moist. Once seedlings appear, thin them as needed to maintain proper spacing.
How to Grow
These sunflowers require full sunlight, ideally at least 8 hours per day. While they don’t need excessive water, it’s important to keep the soil evenly moist, especially during dry spells, to prevent wilting. Due to their height, the plants may need staking for support, particularly in windy areas.
How to Save
- 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 in a cool, dark, dry place.
FAQ
How long do Red Sun sunflower blooms last?
It typically blooms for several weeks, from mid-summer to early fall, depending on planting time and growing conditions.
Do Red Sun sunflowers attract pollinators?
Yes, Red Sun sunflowers are highly attractive to pollinators like bees and butterflies, which makes them a great addition to any pollinator-friendly garden.
Do I need to fertilize Red Sun sunflowers often?
While they can grow without additional fertilization, applying a balanced, slow-release fertilizer during planting and mid-season can improve growth and bloom quality, especially in nutrient-poor soils.
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