Overview
Selinum wallichianum is a plant with a clump forming habit in the genus Ligusticopsis, part of the Apiaceae family, with deciduous foliage. Selinum wallichianum grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include cottage and informal garden, wildlife gardens, architectural and flower borders and beds.
About the genus
Ligusticopsis is a genus of flowering plants belonging to the family Apiaceae.
Wikipedia contributors, "Ligusticopsis", CC BY-SA 4.0 — Ligusticopsis
In the garden
Selinum wallichianum belongs to the Apiaceae and is encountered in cultivation under its traditional horticultural name, while taxonomists place it in the genus Ligusticopsis. The species is valued for its large compound umbels made up of numerous small white flowers, which appear from July to September and create a soft, late-summer presence in the border. Plants handled by experienced gardeners are commonly used where a tall, airy floral structure is desirable. In cultivation it has a perennial habit with a persistent rootstock; many gardeners allow clumps to establish before lifting or dividing. Exact site requirements vary among sources, so match soil and exposure to local conditions and the planting’s intended role rather than relying on a single rule of thumb. Where to use it in a UK garden depends on the desired visual effect: groups of plants give a cloud of white that reads at a distance, while single specimens can punctuate a mixed border. The fine-textured basal leaves form a subtle foundation for the umbels, and planting in multiples emphasises the species’ late-summer impact.
Growing conditions
Best soil and position for Ligusticopsis
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
Selinum wallichianum size, habit and characteristics
- Habit
- Clump forming
- Foliage
- Deciduous
- Suggested uses
- Cottage and informal garden, Wildlife gardens, Architectural, Flower borders and beds
Care notes
Pruning and caring for Selinum wallichianum
- Propagation
- Seed, Division
- Pest resistance
- Slugs, Snails
- Disease resistance
- Powdery mildews
Frequently asked questions
Where is the best place to plant Selinum wallichianum?
Selinum wallichianum prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Selinum wallichianum need?
Selinum wallichianum 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.
Is Selinum wallichianum hardy in the UK?
Selinum wallichianum 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 Selinum wallichianum?
Seed, Division.
From the Fenn Plants journal
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