Close up of a Taiyo Sunflower on a white background.
Sunflower Seeds, Taiyo
An arrangement of Taiyo Sunflowers on a large wood bucket next to an antique book and lantern.
Profile of a Taiyo Sunflower growing in a field.
Closeup of a Taiyo Sunflower growing in a field.
Close up of a Taiyo Sunflower on a white background.
Sunflower Seeds, Taiyo
An arrangement of Taiyo Sunflowers on a large wood bucket next to an antique book and lantern.
Profile of a Taiyo Sunflower growing in a field.
Closeup of a Taiyo Sunflower growing in a field.

Sunflower Seeds,
Taiyo

4.614 ReviewsSKU: #FL929Min. seed count: 35
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Description

(Helianthus annuus). An old Japanese variety grown for cut-flower use. Equally attractive in arrangements or in mass plantings in the garden. The tall, non-branching plants produce a single large flower in tones of yellow to orange, chocolate and sable. Florists adore the 8- to 10-inch flowers!

Growing Tips: The Taiyo sunflower can grow between 6 to 7 feet tall and has sturdy stems. It grows best in rich, well-draining soil, moderate soil moisture, and full sun. Taiyo sunflower is better suited for garden beds rather than containers due to its height and space requirements.

Plant Details

Botanical Name
Helianthus annuus
Life Cycle
Annual
Sun Requirement
8–12 hr.
Days to Germinate
7–14
Days to Maturity
75–90
Planting Depth
½ in.
Plant Spacing
18–24 in.
Ideal Temperature
60–75°F
Frost Hardy
No

When to Grow

Plant Taiyo sunflowers outdoors after the last spring frost, when soil temperatures reach at least 60 F. You can also start them indoors 2-3 weeks before the last frost, then carefully transplant them once conditions are warm and stable​. 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 directly into the soil about 1/2 inch deep and 18-24 inches apart to give them room to grow. Germination typically happens within 7-14 days if the soil is kept consistently moist. These sunflowers do not generally require staking, but it can be useful in windy areas due to their height.

How to Grow

Taiyo sunflowers need 8-12 hours of direct sunlight daily. Water regularly, particularly during dry periods, but be careful not to overwater to prevent root rot. A balanced, slow-release fertilizer applied at planting and mid-season can help support their growth. In rich soil, additional fertilization may not be necessary​.

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

Are Taiyo sunflowers good for pollinators?

Yes, Taiyo sunflowers are excellent for attracting bees, butterflies, and other insects, adding ecological value to your garden.

Can Taiyo sunflowers be grown in containers?

Due to their height, they are best suited for garden beds, although they can grow in very large containers if needed.

Do Taiyo sunflowers need fertilization?

They generally do well with minimal fertilization. A single application at planting and another mid-season is sufficient, as over-fertilizing can lead to excessive leaf growth at the expense of blooms.

Browse our full range of sunflower seeds.

Customer reviews

4.6 / 5 14 Reviews

What gardeners are saying

  • Bullseye blooms: Deep gold petals around dark, ringed centers that stand out.

  • Dinner-plate heads: Huge heads on thick stalks that reach 10 feet or more.

  • Bees go wild: Blooms covered in bees, a real draw for a habitat garden.

  • Easy to grow: Easy to grow for most, started indoors or sown in place.

  • Late bloomer: Among the last sunflowers to open, but worth the wait.

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