Helianthus 'Happy Days'
"Sunflower"
Orders placed before 1 March 2024
You can expect your order in March 2024
Orders placed 1 March - 15 April 2024
You can expect your order in March/April 2024
Orders placed 16 April - 15 May 2024
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 your 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.
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 before 1 March 2024
You can expect your order in March 2024Orders placed 1 March - 15 April 2024
You can expect your order in April 2024Orders placed 16 April - 15 May 2024
You can expect your order within 10 business days
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