Helianthus 'Happy Days'
"Sunflower"
Orders placed until 29 February 2025
You can expect your order in February/March 2025
Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025
Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
UK orders over £50
Free shipping
UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Description
Helianthus 'Happy Days' is a stunning dwarf perennial sunflower. Dramatic bright yellow flowers, with double centres, are produced from July to September, on stems just 90cm / 36" or so high. Leaves are dark green, toothed and pointed, and make a great backdrop for the yellow blooms. The plants are slim, at just 60cm wide. Happy to grow in most good garden soils, in a sunny spot, this Helianthus is a useful late-flowering plant for the middle of a border. And it does not run amok, like some types!
Bees and butterflies love the flowers, which are also great to use as cut blooms for indoors; they also dry well for long-lasting indoor decorations. Helianthus 'Happy Days' is so highly regarded by experts, that the Royal Horticultural Society (RHS) has given it the coveted Award of Garden Merit.
Key features
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Good for cutting
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Perfect for pots
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Comes back every year
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Attractive to wildlife
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Loved by pollinators
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Thrives well in full sun
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In peat-free compost
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Low maintenance
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RHS Award (AGM)
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Fully hardy
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Rodent resistant
Specs & details
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Botanical name
Helianthus 'Happy Days'
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Flower colour
Yellow
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Plant size
1
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Established height
50-70cm
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Established spread
50-70cm
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Plant spacing
16 plants per m2
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Leaf colour
Green
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Habit
Upright
Clump-forming -
Life cycle
Perennial
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Hardiness
Fully hardy
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Years to establish
1-2 years
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Sunlight
Full sun
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Position
Sheltered
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Suitable for
Pots
Large containers
Borders
Gravel gardens
Wildlife gardens
Cottage gardens
Low maintenance gardens
Cut flower gardens -
Soil acidity
Any
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Soil moisture
Free draining
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Soil type
Loam
Multipurpose compost
Loam-based compost -
RHS Award (AGM)
Yes
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Growing skill
Easy to grow
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Scented
No
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Pollinator-friendly
Yes
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Mouse resistant
Yes
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Rabbit resistant
Yes
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Deer resistant
Yes
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Toxicity
No report
Plant calendar
| Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
- Planting
- Flowering
Useful information
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Soak the Helianthus 'Happy Days' roots in water for 3-6 hours prior to planting
Plant your "Sunflower" bare roots into temporary pots with a multipurpose compost in spring and grow-on in a sheltered spot outdoors
Choose a pot which comfortably fits the bare roots. Some have a noticeable crown which should be just below the soil surface with any top growth exposed. Some varieties are a length of root which should be planted lengthways and shallowly (1-2cm deep).
Plant out into borders or permanent containers in late spring or early summer once in full growth. Choose a position in sun or shade depending on the variety.
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Orders placed until 29 February 2025
You can expect your order in February/March 2025Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
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