Kniphofia 'Primrose Upward'
red-hot poker 'Primrose Upward'
'Primrose Upward' is a clump-forming plant with long, upright to arching leaves; height to 115cm, spread to 110cm. The flower spikes have distinctive colouring, green buds opening to pale yellow florets just tinged with chestnut. Floriferous, and in flower for a long period
Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
1–1.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Green Yellow | Green | ||
| Autumn | Green Yellow | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing
Exposure
Exposed Hardiness
H6Botanical details
- Family
- Asphodelaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Kniphofia may be evergreen or herbaceous perennials, with linear or strap-shaped leaves and erect stems bearing a dense raceme of tubular, usually pendent flowers
- Name status
Accepted
How to grow
Cultivation
Grow in full sun and fertile, moist but well-drained soil that isn’t too wet over winter. See kniphofia cultivation for further advice
Propagation
Propagate by division of established clumps in late spring. Propagate by taking offshoots from the crown
Suggested planting locations and garden types
- Cottage and informal garden
- Gravel garden
- City and courtyard gardens
- Mediterranean climate plants
- Flower borders and beds
Pruning
Cut down old flower stems after flowering; old or dead leaves can be tidied up or removed in mid-spring
Pests
Diseases
Generally disease-free
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.