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
This flowering Trollius 'Superbus', with globe-shaped, buttercup-like flowers of lemon-yellow, held above fresh dark green deeply cut foliage, looks at its absolute best in late spring and early summer. It is a native UK plant, therefore extremely hardy, and is resistant to a great many pests and diseases. It is considered to be one of the easiest of garden plants to grow!
Known as the yellow globeflower, Trollius × cultorum 'Superbus' is ideal for a spot in an average-to-moist soil. This form is tolerant of a wide range of light conditions, from full sun to full shade, and everything in between. Its size makes it perfect for placing towards the front or mid-way in a border. Even better, the flowers last well when cut and placed in a vase for indoor decoration. Trollius 'Superbus' should be cut back in late autumn – it will come back in spring to delight you again, year after year. It is so highly regarded by experts, that the Royal Horticultural Society (RHS) has given it the coveted Award of Garden Merit.
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
- Trollius × cultorum 'Superbus'
- Flower colour
- Yellow
- Established height
- 50-70cm
- Established spread
- 20-30cm
- Growing skill
- Easy to grow
- Habit
-
Upright
Clump-forming - Hardiness
- Fully hardy
- Leaf colour
- Green
- Mouse resistant
- No
- Plant size
- 1
- Plant spacing
- 10 plants per m2
- Pollinator friendly
- Yes
- Position
- Sheltered
- Rabbit resistant
- No
- RHS Award (AGM)
- Yes
- Scented
- No
- Soil acidity
- Any
- Soil moisture
- Damp
- Soil type
-
Clay
Loam
Multipurpose compost
Loam-based compost - Suitable for
-
Pots
Water gardens
Cottage gardens
Low maintenance gardens - Sunlight
-
Full sun
Partial shade - Toxicity
- No report
- Years to establish
- 1-2 years
Perfect for pots
Pollinator-friendly
Thrives in full sun
RHS Recommended
Perennial
Fully hardy
Packed peat-free
Low maintenance
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Trollius 'Superbus' reviews
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