Overview
Asclepias tuberosa subsp. interior is a bushy bulbs in the genus Asclepias, part of the Apocynaceae family, with deciduous foliage. Asclepias tuberosa subsp. interior grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H4. Suggested uses include city and courtyard gardens, cottage and informal garden and flower borders and beds.
About
Asclepias tuberosa subsp. interior is a bushy, deciduous herbaceous perennial belonging to the genus Asclepias, which includes evergreen or deciduous perennials and subshrubs with simple, entire leaves and distinctive clusters of small flowers arranged in umbels. This cultivar thrives in full sun on south- or west-facing, sheltered sites with fertile, moist but well-drained loam soil of neutral pH. Hardy to UK zone H4, it is suitable for city and courtyard gardens, cottage and informal gardens, as well as flower borders and beds. Interest is mainly in spring and summer, and propagation can be done by seed, division, or root basal cuttings in spring.
About the genus
Asclepias is a genus of herbaceous, perennial, flowering plants known as milkweeds, named for their latex, a milky substance containing cardiac glycosides termed cardenolides, exuded where cells are damaged. Most species are toxic to humans and many other species, primarily due to the presence of cardenolides. However, as with many such plants, some species feed upon milkweed leaves or the nectar from their flowers.
Wikipedia contributors, "Asclepias", CC BY-SA 4.0 — Asclepias
Growing conditions
Best soil and position for Asclepias
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing or West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
Asclepias tuberosa subsp. interior size, habit and characteristics
- Plant type
- Bulbs, Herbaceous Perennial
- Habit
- Bushy
- Foliage
- Deciduous
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Flower borders and beds
Care notes
Pruning and caring for Asclepias tuberosa subsp. interior
- Propagation
- Seed, Division, Root basal cuttings in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Asclepias tuberosa subsp. interior?
Asclepias tuberosa subsp. interior prefers full sun. It suits sheltered positions.
What soil does Asclepias tuberosa subsp. interior need?
Asclepias tuberosa subsp. interior grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is Asclepias tuberosa subsp. interior hardy in the UK?
Asclepias tuberosa subsp. interior 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 Asclepias tuberosa subsp. interior?
Seed, Division, Root basal cuttings in spring.
