Overview
Petrocosmea rosettifolia C.Y. Wu ex H.W.L. is a matforming alpine rockery in the genus Petrocosmea, part of the Gesneriaceae family, with evergreen foliage. Petrocosmea rosettifolia C.Y. Wu ex H.W.L. grows best in partial shade, and tolerates loam soils and neutral pH. Its UK hardiness is rated H2. Suggested uses include patio and container plants.
About
Petrocosmea rosettifolia C.Y. Wu ex H.W.L. is a matforming evergreen perennial belonging to the genus Petrocosmea in the Gesneriaceae family. It features low rosettes of thick foliage and produces small clusters of five-lobed, tubular to bell-shaped flowers in spring and summer. This cultivar thrives in partial shade with a north, east, or west-facing aspect and prefers sheltered positions. It grows best in fertile, well-drained loam soil with a neutral pH and is suitable for patio and container planting in the UK, with a hardiness rating of H2.
Growing conditions
Best soil and position for Petrocosmea
- Sunlight
- Partial shade
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Well-drained
- Aspect
- North-facing, East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H2
Plant details
Petrocosmea rosettifolia C.Y. Wu ex H.W.L. size, habit and characteristics
- Plant type
- Alpine Rockery
- Habit
- Matforming
- Foliage
- Evergreen
- Suggested uses
- Patio and container plants
Care notes
Pruning and caring for Petrocosmea rosettifolia C.Y. Wu ex H.W.L.
- Propagation
- Seed, leaf cuttings
- Pest resistance
- Susceptible to slugs, snails, aphids, glasshouse whitefly, mealybugs, scale insects, tarsonemid mites
- Disease resistance
- Susceptible to mildew, crown, leaf, stem, and root rots
Frequently asked questions
Where is the best place to plant Petrocosmea rosettifolia C.Y. Wu ex H.W.L.?
Petrocosmea rosettifolia C.Y. Wu ex H.W.L. prefers partial shade. It suits sheltered positions.
What soil does Petrocosmea rosettifolia C.Y. Wu ex H.W.L. need?
Petrocosmea rosettifolia C.Y. Wu ex H.W.L. grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Petrocosmea rosettifolia C.Y. Wu ex H.W.L. hardy in the UK?
Petrocosmea rosettifolia C.Y. Wu ex H.W.L. has an RHS hardiness rating of H2, meaning it is tender, tolerating 1–5°C, and needs frost-free protection over winter.
How do I propagate Petrocosmea rosettifolia C.Y. Wu ex H.W.L.?
Seed, leaf cuttings.
More in the Petrocosmea genus
- Petrocosmea flaccida
- Petrocosmea kerriiKerr’s petrocosmea
- Petrocosmea 'Rosemary Platz'petrocosmea 'Rosemary Platz'