Overview

Galium palustre subsp. elongatum is a trailing annual biennial in the genus Galium, part of the Rubiaceae family, with deciduous foliage. Galium palustre subsp. elongatum grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H7. Suggested uses include wildlife gardens.

About

Galium palustre subsp. elongatum is a trailing annual or biennial cultivar within the Galium genus, which includes slender plants with whorls of narrow leaves and small white or yellow flowers. This deciduous plant thrives in a variety of soil types, including chalk, clay, loam, and sand, and tolerates a wide pH range from acid to alkaline. It prefers moist but well-drained or well-drained soils and can grow in full sun or partial shade with exposure to all aspects. Hardy to UK zone H7, it is suitable for wildlife gardens and is best propagated by seed, spreading readily in fertile soil with roots in shade.

Growing conditions

Best soil and position for Galium

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
South-facing, West-facing, North-facing, East-facing
Exposure
Exposed, Sheltered
UK hardiness
H7

Plant details

Galium palustre subsp. elongatum size, habit and characteristics

Plant type
Annual Biennial
Habit
Trailing
Foliage
Deciduous
Suggested uses
Wildlife gardens

Care notes

Pruning and caring for Galium palustre subsp. elongatum

Propagation
Propagate by seed which spreads readily
Pest resistance
Generally pest-free
Disease resistance
Generally disease-free

Frequently asked questions

Where is the best place to plant Galium palustre subsp. elongatum?

Galium palustre subsp. elongatum prefers full sun and partial shade. It suits exposed and sheltered positions.

What soil does Galium palustre subsp. elongatum need?

Galium palustre subsp. elongatum 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 Galium palustre subsp. elongatum hardy in the UK?

Galium palustre subsp. elongatum has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

How do I propagate Galium palustre subsp. elongatum?

Propagate by seed which spreads readily.

More in the Galium genus

Browse all Galium