Overview

Holosteum umbellatum is a plant with a herbaceous annual habit in the genus Holosteum, part of the Caryophyllaceae family, with deciduous foliage. Holosteum umbellatum grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include rock garden and wildlife garden.

About

Holosteum umbellatum, commonly known as jagged chickweed or mouse ear, is a herbaceous annual in the Caryophyllaceae family. This deciduous plant thrives in full sun on a south-facing, exposed aspect, preferring fertile, well-drained loam soil with a neutral pH. Hardy to UK zone H5, it is best suited to rock gardens and wildlife gardens. It flowers in spring and summer and is propagated by seed.

About the genus

Holosteum is a genus of plants in the family Caryophyllaceae with 3 or 4 species native from southern Europe through central and south western Asia and in Africa. They are herbs with an annual life span, some growing as winter annuals. They have slender roots and thin stems that are upright or ascending.

Wikipedia contributors, "Holosteum", CC BY-SA 4.0Holosteum

Growing conditions

Best soil and position for Holosteum

Sunlight
Full sun
Soil type
Loam
Soil pH
Neutral
Soil moisture
Well-drained
Aspect
South-facing
Exposure
Exposed
UK hardiness
H5

Plant details

Holosteum umbellatum size, habit and characteristics

Habit
Herbaceous annual
Foliage
Deciduous
Suggested uses
Rock garden, Wildlife garden

Care notes

Pruning and caring for Holosteum umbellatum

Propagation
Seed
Pest resistance
Generally pest-free
Disease resistance
Generally disease-free

Frequently asked questions

Where is the best place to plant Holosteum umbellatum?

Holosteum umbellatum prefers full sun. It suits exposed positions.

What soil does Holosteum umbellatum need?

Holosteum umbellatum grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.

Is Holosteum umbellatum hardy in the UK?

Holosteum umbellatum 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 Holosteum umbellatum?

Seed.