Overview

Amaranthus rubra is a bushy annual biennial in the genus Amaranthus, part of the Amaranthaceae family, with deciduous foliage. Amaranthus rubra grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H1a. Suggested uses include cottage and informal garden, city and courtyard gardens, sub-tropical, cut flowers and flower borders and beds.

About

Amaranthus rubra is a bushy cultivar of the Amaranthus genus, which includes annuals and short-lived perennials with simple leaves and small flowers arranged in dense, catkin-like clusters. This deciduous plant thrives in full sun and prefers a sheltered position with loam soil that is neutral in pH and moist but well-drained. It is hardy to H1a and is best suited to fertile, moist soil conditions. Amaranthus rubra is ideal for cottage and informal gardens, city and courtyard gardens, and can be used in flower borders and beds, offering interest during the summer and autumn seasons.

Growing conditions

Best soil and position for Amaranthus

Sunlight
Full sun
Soil type
Loam
Soil pH
Neutral
Soil moisture
Moist but well-drained
Aspect
South-facing, West-facing, East-facing
Exposure
Sheltered
UK hardiness
H1a

Plant details

Amaranthus rubra size, habit and characteristics

Plant type
Annual Biennial
Habit
Bushy
Foliage
Deciduous
Suggested uses
Cottage and informal garden, City and courtyard gardens, Sub-tropical, Cut flowers, Flower borders and beds

Care notes

Pruning and caring for Amaranthus rubra

Propagation
Seed sown at 20°C (68°F) in mid-spring
Pest resistance
Aphids
Disease resistance
Virus

Frequently asked questions

Where is the best place to plant Amaranthus rubra?

Amaranthus rubra prefers full sun. It suits sheltered positions.

What soil does Amaranthus rubra need?

Amaranthus rubra grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.

Is Amaranthus rubra hardy in the UK?

Amaranthus rubra has an RHS hardiness rating of H1a, meaning it needs tropical warmth above 15°C and must be grown under glass in the UK.

How do I propagate Amaranthus rubra?

Seed sown at 20°C (68°F) in mid-spring.

More in the Amaranthus genus

Browse all Amaranthus