Overview

Lepidium nanum is a clump forming, columnar upright herbaceous perennial in the genus Lepidium, part of the Brassicaceae family, with deciduous foliage. Lepidium nanum grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include cottage and informal garden, cut flowers, flower borders and beds and wall side borders.

About

Lepidium nanum, the dwarf pepperweed, is a plant species native to the US states of Nevada and Utah. It is known from four counties in Nevada (Nye, Elko, White Pine and Eureka) but only one in Utah (Tooele County). It occurs in open, sunlit areas in the desert, often with gypsum, limestone, quartzite or chalky soils. Lepidium nanum is a perennial herb with a woody caudex, forming mound-shaped mats on the surface of the ground. In the garden it prefers full sun and loam soil. In UK gardens it is hardy in most of the UK (RHS H5). Suggested uses include cottage and informal garden, cut flowers, flower borders and beds and wall side borders. It tolerates neutral soils, well-drained conditions and south-facing, west-facing and east-facing aspects. Plant in well-drained soil in a suitable position. Water during establishment.

Wikipedia contributors, CC BY-SA 4.0Lepidium nanum

About the genus

Lepidium is a genus of plants in the mustard/cabbage family, Brassicaceae. The genus is widely distributed in the Americas, Africa, Asia, Europe, and Australia. It includes familiar species such as garden cress, maca, and dittander.

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

Growing conditions

Best soil and position for Lepidium

Sunlight
Full sun
Soil type
Loam
Soil pH
Neutral
Soil moisture
Well-drained
Aspect
South-facing, West-facing, East-facing
Exposure
Sheltered
UK hardiness
H5

Plant details

Lepidium nanum size, habit and characteristics

Plant type
Herbaceous Perennial
Habit
Clump forming, Columnar upright
Foliage
Deciduous
Suggested uses
Cottage and informal garden, Cut flowers, Flower borders and beds, Wall side borders

Care notes

Pruning and caring for Lepidium nanum

Propagation
Pencil thick basal softwood cuttings in early spring
Pest resistance
Aphids, Earwigs, Delphinium leaf miner, Delphinium moth caterpillars, Slugs, Snails, Caterpillars
Disease resistance
Powdery mildews, Delphinium black blotch, Crown rot, Viruses

Frequently asked questions

Where is the best place to plant Lepidium nanum?

Lepidium nanum prefers full sun. It suits sheltered positions.

What soil does Lepidium nanum need?

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

Is Lepidium nanum hardy in the UK?

Lepidium nanum 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 Lepidium nanum?

Pencil thick basal softwood cuttings in early spring.