Arrangement of Henry Wilde sunflowers in a yellow vase on a white background.
Three Henry Wilde Sunflowers and buds on a wooden background.
A Henry Wilde Sunflower growing in the garden.
Several Henry Wilde Sunflowers are held by a gardener with a purple shirt.
Arrangement of Henry Wilde sunflowers in a yellow vase on a white background.
Three Henry Wilde Sunflowers and buds on a wooden background.
A Henry Wilde Sunflower growing in the garden.
Several Henry Wilde Sunflowers are held by a gardener with a purple shirt.

Sunflower Seeds,
Henry Wilde

4.923 Reviews#FL745 · 35 seeds
Price
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Description

(Helianthus annuus). The classic-looking heirloom sunflower with pure yellow petals and dark centers is perfect for using as a cut flower and perfect for planting along a fence.

Plant Details

Botanical Name
Helianthus annuus
Life Cycle
Annual
Sun Requirement
8–12 hr.
Days to Germinate
7–14
Days to Maturity
85–95
Planting Depth
½ in.
Plant Spacing
18–24 in.
Ideal Temperature
65–75°F
Frost Hardy
No

Growing Guide

When to Grow

Sow sunflower seeds after the last frost when the soil has warmed to at least 60 F. In cooler climates, you can start seeds indoors 2-3 weeks before the last frost. For continuous blooms, consider staggered planting every 2-3 weeks throughout the growing season​. You can check frost dates specific to your region to time this properly. 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

Direct sow seeds about 1/2 inch deep, spacing them 18-24 inches apart depending on the desired density. If planting multiple rows, space rows 2-3 feet apart. Keep the seeds moist until they germinate, which typically takes 7-14 days.

How to Grow

Sunflowers are heavy feeders, so mix compost or slow-release fertilizer into the soil before planting. Once the plants reach about 2 feet in height, fertilize lightly again to support their rapid growth. Water deeply but infrequently to promote deep root development. Once established, they are somewhat drought-tolerant, but consistent watering will improve flowering​. Staking may be needed to provide support as they grow.

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

Can Henry Wilde sunflowers grow in containers?

They can be grown in large containers, but due to their height, they are better suited to garden beds.

When is the best time to harvest Henry Wilde sunflower seeds?

Once the back of the flower head turns brown, the seeds can be harvested.

Are Henry Wilde sunflowers drought-tolerant?

While sunflowers can handle short periods of drought, regular watering will enhance their growth and bloom.

Browse our full range of sunflower seeds.

Customer reviews

4.9 / 5 23 Reviews

What gardeners are saying

  • Towering stalks: Plants commonly reach 10 to 14 feet tall.

  • Dozens of blooms: Branching stalks carry many heads, with one big one on top.

  • Pollinators and goldfinches: Bees and hummingbirds work the blooms; goldfinches eat the seed.

  • Easy to start: Germinates well and grows in poor soil with little care.

  • Heads up: Tall stalks lean in wind; stake them or plant in groups.

More to grow!

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