Overview
Primula smithiana is a rosette-forming, clump-forming perennial in the genus Primula, part of the Primulaceae family, with deciduous, semi-evergreen or evergreen; rosettes of crinkled or mealy leaves foliage. Primula smithiana grows best in partial shade; alpines and auriculas take more sun, and tolerates fertile humus-rich loam; alpine kinds need gritty free-draining soil soils and neutral to slightly acid; asiatic species dislike lime pH. Its UK hardiness is rated H4-H7 depending on group. It is native to Himalayas.
About
Primula smithiana is a perennial primula from the Himalayas noted for rosettes of crinkled or mealy leaves and a clump-forming habit. It flowers from February to June. Plants prefer partial shade on north, east or west-facing, sheltered sites and grow in fertile humus-rich loam; alpine forms need a gritty, free-draining mix. Winter tolerance varies by group from average to fully hardy.
About the genus
Primula is a genus of herbaceous flowering plants in the family Primulaceae. They include the primrose, a familiar wildflower of banks and verges. Other common species are P.
Wikipedia contributors, "Primula", CC BY-SA 4.0 — Primula
In the garden
Primula smithiana is a perennial member of the Primulaceae native to the Himalayas, forming basal rosettes and clumps with distinctly crinkled or mealy foliage and a spring flowering period from February to June. The species covers several garden types; some groups behave like woodland primulas while others are true alpines. Sit Primula smithiana in partial shade (alpines and auricula-types will tolerate more sun) on a north, east or west-facing, sheltered aspect. For soil, use a fertile, humus-rich loam for the woodland and candelabra forms; alpine forms require a gritty, free-draining substrate. Soil pH should be neutral to slightly acid — Asiatic groups dislike lime. Keep moisture reliable for woodland and candelabra kinds, but ensure sharply drained conditions for alpine types. Hardiness ranges H4–H7 (average to fully hardy) depending on the group and provenance, so select plants matched to your site. Use woodland-form groups in shaded borders or under deciduous trees, and reserve the gritty-drained spots for alpine selections. The rosettes’ crinkled or mealy leaf texture remains a defining feature through the spring flowering season.
Growing conditions
Best soil and position for Primula
- Sunlight
- Partial shade; alpines and auriculas take more sun
- Soil type
- Fertile humus-rich loam; alpine kinds need gritty free-draining soil
- Soil pH
- Neutral to slightly acid; Asiatic species dislike lime
- Soil moisture
- Reliably moist for candelabra and woodland kinds; sharply drained for alpines
- Aspect
- North, east or west facing
- Exposure
- Sheltered
- UK hardiness
- H4-H7 depending on group
Plant details
Primula smithiana size, habit and characteristics
- Plant type
- Perennial
- Habit
- Rosette-forming, clump-forming
- Foliage
- Deciduous, semi-evergreen or evergreen; rosettes of crinkled or mealy leaves
- Native to
- Himalayas
Care notes
Pruning and caring for Primula smithiana
- Cultivation
- Match the group to the site and these are easy plants; ignore the distinction and they are short-lived. Candelabra and sikkimensis types want ground that never dries, so a streamside or bog garden suits them perfectly, while auriculas and the alpine species need gritty compost, protection from winter rain, and are traditionally grown in pots in an open frame. Woodland primulas ask for nothing more than leaf mould and dappled shade.
- Pruning
- No pruning required. Deadhead to prevent self-seeding where it is not wanted, and remove dead outer leaves from the rosettes to reduce rot.
- Propagation
- Divide after flowering, ideally every second or third year, as congested rosettes decline. Seed germinates best sown fresh and given a cold period, and many species self-sow freely.
- Pest resistance
- Vine weevil is the principal enemy, especially in pots, along with slugs, aphids and red spider mite under glass.
- Disease resistance
- Prone to grey mould and crown rot in stagnant damp. Primula brown core, a root rot, causes gradual decline in long-established plantings.
Frequently asked questions
How do I grow Primula smithiana?
Match the group to the site and these are easy plants; ignore the distinction and they are short-lived. Candelabra and sikkimensis types want ground that never dries, so a streamside or bog garden suits them perfectly, while auriculas and the alpine species need gritty compost, protection from winter rain, and are traditionally grown in pots in an open frame. Woodland primulas ask for nothing more than leaf mould and dappled shade.
Where is the best place to plant Primula smithiana?
Primula smithiana prefers partial shade; alpines and auriculas take more sun. It suits sheltered positions.
What soil does Primula smithiana need?
Primula smithiana grows best in fertile humus-rich loam; alpine kinds need gritty free-draining soil soil. It prefers neutral to slightly acid; asiatic species dislike lime soil. Aim for soil that stays reliably moist for candelabra and woodland kinds; sharply drained for alpines.
How do I prune Primula smithiana?
No pruning required. Deadhead to prevent self-seeding where it is not wanted, and remove dead outer leaves from the rosettes to reduce rot.
Is Primula smithiana hardy in the UK?
Primula smithiana has an RHS hardiness rating of H4, meaning it is hardy through an average UK winter, tolerating -10 to -5°C.
How do I propagate Primula smithiana?
Divide after flowering, ideally every second or third year, as congested rosettes decline. Seed germinates best sown fresh and given a cold period, and many species self-sow freely.
More in the Primula genus
- Primula aurantiaca
- Primula burmanica
- Primula helodoxa
- Primula microdonta
- Primula waltonii
- Primula 'Asthore Hybrids'
- Primula 'Devon Cream'
- Primula 'Ravenglass Vermilion'