About
A tuberous perennial corydalis from subalpine meadows of the Caucasus and Central Asia with deeply pinnate, mid-green, fern-like leaves and short racemes of small, yellow, purple-tipped, spurred flowers in spring. A charming and delicate plant for a cool, moist, well-drained position in a rock garden or woodland border.
About the genus
Rosa can be deciduous or semi-evergreen shrubs or scrambling climbers, with usually thorny stems bearing compound pinnate leaves and solitary or clustered flowers. Flowers may be followed by showy red or purple fruits in some varieties.
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectSouth-facing, East-facing, West-facing
ExposureSheltered
UK hardinessH6
Plant details
Plant typeRoses
HabitSpreading branched
FoliageDeciduous
Height1.5-2.5 metres
Spread1.5-2.5 metres
Time to full height5-10 years
Suggested usesWildlife gardens, Coastal, Cottage and informal garden
Native toHimalaya to C & S China
FragranceFlower
ToxicityFruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Care notes
CultivationGrow in fertile, humus-rich, moist but well-drained soil in full sun or part shade, Suited to edge of woodland planting. Mulch with well-rotted organic matter in late winter or early spring, and for best flowering apply a general rose or shrub fertiliser in early spring and again in early summer. See rose cultivation
PruningSee pruning group 20 (shrub roses) ; to retain hips, delay pruning until late winter
PropagationPropagate by softwood cuttings in early to mid spring, hardwood cuttings in late summer to autumn or by chip budding in summer; propagate by seed; species roses can be propagated by seed but need stratification and germination may take two seasons
Pest resistanceMay be susceptible to aphids, rose leafhopper, glasshouse red spider mite, scale insects, caterpillars, large rose sawfly, rose slugworm sawfly and rose leaf-rolling sawfly. Deer and rabbits can cause damage
Disease resistanceMay be susceptible to rose black spot, rose rust, replant disease, rose dieback, and rose powdery mildew and sometimes honey fungus. May also be susceptible to disorders rose blindness and flower balling