Overview
Helosciadium inundatum is a plant with a creeping, prostrate habit in the genus Helosciadium, part of the Apiaceae family, with deciduous foliage. Helosciadium inundatum grows best in full sun and partial shade, and tolerates loam and sand soils and any pH. Its UK hardiness is rated H5. Suggested uses include wildlife gardens and wetland areas.
About
Helosciadium inundatum, commonly known as lesser marshwort, is a creeping, prostrate plant within the Apiaceae family. It is deciduous and thrives in full sun or partial shade, favouring sheltered positions with south, west, or east-facing aspects. This cultivar grows best in fertile, moist but well-drained soils such as loam or sand, accommodating a range of soil pH from acid to alkaline. Hardy to UK zone H5, it is suitable for wildlife gardens and wetland areas, offering seasonal interest in spring and summer. Propagation can be achieved through division or seed.
Growing conditions
Best soil and position for Helosciadium
- Sunlight
- Full sun, Partial shade
- Soil type
- Loam, Sand
- Soil pH
- Acid, Neutral, Alkaline
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Helosciadium inundatum size, habit and characteristics
- Habit
- Creeping, Prostrate
- Foliage
- Deciduous
- Suggested uses
- Wildlife gardens, Wetland areas
Care notes
Pruning and caring for Helosciadium inundatum
- Propagation
- Division, Seed
- Pest resistance
- Susceptible to aphids, slugs, snails
- Disease resistance
- Susceptible to leaf spot, powdery mildew
Frequently asked questions
Where is the best place to plant Helosciadium inundatum?
Helosciadium inundatum prefers full sun and partial shade. It suits sheltered positions.
What soil does Helosciadium inundatum need?
Helosciadium inundatum grows best in loam and sand soil. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Helosciadium inundatum hardy in the UK?
Helosciadium inundatum has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Helosciadium inundatum?
Division, Seed.
