Happy Days Sunflower
Helianthus annuus 'Happy Days'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Annual
Height
18 inches
Width
12 inches
Light
Full Sun
Water
Moderate
Humidity
Average
Lifespan
Annual
Native To
North America
Toxicity
Non-toxic
The Story
Plant Bio
Helianthus annuus 'Happy Days' is a dwarf, bushy annual sunflower known for its large, fluffy, double-petaled, golden-yellow flowers that resemble chrysanthemums. It is pollen-free, making it an excellent cut flower. This cultivar is prized for its compact, branching habit, making it ideal for containers and smaller gardens. Its unique, fully double, pollen-free blooms are long-lasting in arrangements.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Tuck seeds 1 inch deep in well-draining soil in full sun.
- Keep soil consistently moist until seedlings emerge, about 7-10 days.
- Thin seedlings to 12-18 inches apart to allow growth space.
- Water regularly, especially during dry spells, to promote strong stems.
- Support tall varieties with stakes to prevent lodging.
- Fertilize monthly with a balanced fertilizer for optimal blooms.
Pro Tip
Plant in early spring after the last frost for best growth and flowering.
Keep It Thriving
Care Guide
Do
- Water deeply once a week to encourage deep roots 🌱
- Deadhead spent flowers to prolong blooming
- Fertilize monthly with a balanced fertilizer
Don't
- Avoid overwatering to prevent root rot ❌
- Do not disturb roots during flowering
- Avoid planting in shaded areas
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| Plant | ||||||||||||
| Stake |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Happy Days Sunflower questions
What zones can Happy Days Sunflower grow in?
Happy Days Sunflower is hardy in USDA Zone 10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Happy Days Sunflower deer resistant?
Not reliably. Deer may browse Happy Days Sunflower, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Happy Days Sunflower bloom?
Happy Days Sunflower typically blooms in late summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Happy Days Sunflower need full sun?
Happy Days Sunflower does best in full sun (6+ hours).
Is Happy Days Sunflower drought tolerant?
Yes — once established (usually after the first full season), Happy Days Sunflower handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Helianthus to compare
Swamp Sunflower
Helianthus angustifolius 'First Light'
Maximilian sunflower
Helianthus maximiliani
Narrow-Leaf Sunflower Low Down
Helianthus angustifolius 'Low Down'
Bolander's Sunflower, Serpentine Sunflower
Helianthus bolanderi
Salicifolius Sunflower Willowleaf Sunflower
Helianthus salicifolius
Table Mountain Sunflower
Helianthus annuus 'Table Mountain'
Keep exploring
Explore the genus
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Hardy in your zone?
Grow Happy Days Sunflower with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
