Overview
Galium asprellum is a trailing annual biennial in the genus Galium, part of the Rubiaceae family, with deciduous foliage. Galium asprellum 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 asprellum, commonly known as rough bedstraw, is a trailing annual or biennial plant within the Galium genus, which includes species with slender, sprawling stems and whorls of narrow leaves. This deciduous plant thrives in a variety of soil types, including chalk, clay, loam, and sand, and tolerates a range of pH levels from acid to alkaline. It prefers full sun to partial shade and can be grown in both exposed and sheltered locations. Suitable for wildlife gardens, it flowers in spring and summer and is hardy to UK zone H7. Propagation is by seed, which spreads readily.
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 asprellum size, habit and characteristics
- Plant type
- Annual Biennial
- Habit
- Trailing
- Foliage
- Deciduous
- Suggested uses
- Wildlife gardens
Care notes
Pruning and caring for Galium asprellum
- 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 asprellum?
Galium asprellum prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Galium asprellum need?
Galium asprellum 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 asprellum hardy in the UK?
Galium asprellum 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 asprellum?
Propagate by seed which spreads readily.
More in the Galium genus
- Galium incanum
- Galium lucidum
- Galium megalospermum All.
- Galium mollugo subsp. erectumerect bedstraw
- Galium pumilumslender bedstraw
- Galium uliginosumfen bedstraw
- Galium verumlady's bedstraw
- Galium palustre subsp. elongatum