Unpack bare roots or rhizomes on arrival and plant them within a week. Until then, keep them somewhere cool and ensure the roots remain slightly moist, never wet.
Out of season
New
Heliopsis
'Sizzling Summer'
false sunflower
Heliopsis 'Sizzling Summer' lives up to its name—radiating pure sunshine with a rich palette of golden yellow to orange blooms that seem to glow even on overcast days. Each double flower bursts with layers of silky petals surrounding a warm, amber-toned centre, creating the kind of cheerful display that can lift the dullest mood. Its dark green foliage provides the perfect contrast, adding depth and texture to the glowing blooms. Standing proudly upright, Heliopsis 'Sizzling Summer' brings height and warmth to borders, containers, or even as a cutting-garden favourite—after all, who wouldn’t want a vase of summer on the kitchen table?
This lively false sunflower is as robust as it is radiant. Blooming tirelessly from midsummer well into autumn, Heliopsis helianthoides 'Sizzling Summer' offers months of colour when many plants have called it a day. It thrives in well-drained soil and full sun, rewarding gardeners with an easy, long-lasting show and an open invitation to pollinators. The strong stems and generous flowering habit make 'Sizzling Summer' a reliable garden performer that bridges the gap between late-summer perennials and early autumn hues. If your borders are in need of a touch more warmth—or you simply enjoy a plant with a bit of flair—Heliopsis 'Sizzling Summer' delivers exactly what its name promises: pure golden heat.
Quantity
Plant profile
Plant calendar
Remove the packaging straight away, check the compost and water thoroughly if dry. Check the plant’s hardiness before placing it outdoors. Plant into a border or permanent container within a month, choosing the position recommended for the variety. Keep the top of the root ball level with the surrounding soil, firm gently and water well.
Soak the roots in water for three to six hours immediately before planting. Keep any crown, buds or emerging shoots above the water where possible.
Pot most bare roots into 15–20cm pots filled with peat-free multipurpose compost. Large or depth-sensitive roots, including peonies, are often best planted directly into borders.
Arrange the roots naturally without bending them. Cover the roots completely, positioning the crown and buds at the depth recommended for that particular perennial.
Keep pots in a sheltered outdoor position and water whenever the compost begins to dry. Grow on until roots hold the compost together when lifted from the pot.
Plant into a suitable border or permanent container once well rooted. Add a label and water regularly throughout the first growing season while the perennial establishes.
- Botanical name
- Heliopsis helianthoides 'Sizzling Summer'
- Flower colour
- Orange, yellow
- Established height
- 30-50m
- Established spread
- 30-50cm
- Growing skill
- Easy to grow
- Habit
- Upright
- Hardiness
- Fully hardy
- Leaf colour
- Green
- Mouse resistant
- No
- Plant size
- 1
- Plant spacing
- 5 plants per m2
- Pollinator friendly
- No
- Position
-
Sheltered
Exposed - Rabbit resistant
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
- Free draining
- Soil type
-
Loam
Sandy
Clay
Multipurpose compost
Loam-based compost - Suitable for
-
Borders
Cottage gardens
Large containers
Low maintenance gardens
Wildlife gardens
Cut flower gardens
Coastal gardens - Sunlight
- Full sun
- Toxicity
- No report
- Years to establish
- 1-2 years
Good for cutting
Pollinator-friendly
Thrives in full sun
Perennial
Fully hardy
Packed peat-free
Low maintenance
Attracts wildlife
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Expert care from
choice to delivery
Our horticulturalists prepare every bulb and plant with the utmost care. From selection to packing, each one receives expert attention before beginning its journey to your garden.
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From cultivation to packaging and delivery, we are always looking for ways to lessen our environmental impact.
Growing together
Our care team of horticultural experts is on hand to support you choose and garden with confidence.
World of wonders
A collection of world-renowned flower bulbs and perennials of exceptional beauty and character.
Chosen to thrive
Every bulb and plant is sourced, selected and prepared with an expert eye for their quality and garden performance.
