Overview
Philadelphus delavayi var. calvescens is a bushy shrubs in the genus Philadelphus, part of the Hydrangeaceae family, with green foliage. Philadelphus delavayi var. calvescens grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include city and courtyard gardens, cottage and informal garden, low maintenance and flower borders and beds.
About
Philadelphus delavayi var. calvescens is a bushy deciduous shrub belonging to the Philadelphus genus, known for its simple, opposite green leaves. In spring and summer, it produces bowl-shaped, typically fragrant flowers that may appear singly or in small clusters. This cultivar thrives in fertile, well-drained soil under full sun or partial shade and is hardy to UK zone H6. It is suitable for various garden settings, including city and courtyard gardens, cottage and informal gardens, and flower borders, preferring moist but well-drained soil of various types and pH levels.
About the genus
Philadelphus (mock-orange) is a genus of about 60 species of shrubs from 3–20 ft tall, native to North America, Central America, Asia and (locally) in southeast Europe.
Wikipedia contributors, "Philadelphus", CC BY-SA 4.0 — Philadelphus
Growing conditions
Best soil and position for Philadelphus
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- East-facing, North-facing, South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
Philadelphus delavayi var. calvescens size, habit and characteristics
- Plant type
- Shrubs
- Habit
- Bushy
- Foliage
- Green
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Low Maintenance, Flower borders and beds
Care notes
Pruning and caring for Philadelphus delavayi var. calvescens
- Propagation
- Softwood cuttings, Hardwood cuttings
- Pest resistance
- Aphids
- Disease resistance
- Honey fungus, Powdery mildews
Frequently asked questions
Where is the best place to plant Philadelphus delavayi var. calvescens?
Philadelphus delavayi var. calvescens prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Philadelphus delavayi var. calvescens need?
Philadelphus delavayi var. calvescens is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained to well-drained.
Is Philadelphus delavayi var. calvescens hardy in the UK?
Philadelphus delavayi var. calvescens has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Philadelphus delavayi var. calvescens?
Softwood cuttings, Hardwood cuttings.