Epimedium grandiflorum (large-flowered barrenwort) — Clump forming

Overview

Epimedium grandiflorum is a clump forming perennial in the genus Epimedium, part of the Berberidaceae family, with semi evergreen foliage. It typically grows around 0.4 m tall. Epimedium grandiflorum grows best in partial shade and shade, and tolerates most soils and any pH. Its UK hardiness is rated H7. Suggested uses include groundcover, woodland garden and shade garden. It is native to Japan.

About

Epimedium grandiflorum is a perennial in the family Berberidaceae valued for its large spring flowers. It reaches about 0.4 m and forms a low clump beneath taller plants. It favours partial shade to full shade and tolerates a wide range of soils from sandy to clay, provided they are well drained. Flowering occurs from April to June.

Wikipedia contributors, CC BY-SA 4.0 — Epimedium grandiflorum

About the genus

Epimedium, also known as barrenwort, bishop's hat, fairy wings, horny goat weed, or yin yang huo, is a genus of flowering plants in the family Berberidaceae. The majority of the species are endemic to China, with smaller numbers elsewhere in Asia and a few in the Mediterranean region.

Wikipedia contributors, "Epimedium", CC BY-SA 4.0 — Epimedium

In the garden

Epimedium grandiflorum originates from Japan and is grown for its conspicuous spring blooms and modest stature. As a perennial reaching roughly 0.4 m it behaves as a low, spreading ground cover suited to cooler, shaded positions. It flowers in the UK from April to June, offering early-season interest before many deciduous shrubs come into leaf. Plant in partial shade or shade, choosing soil that is sandy, loamy or clay but that drains freely; it also tolerates neutral to alkaline conditions as well as acidic soils. Soil should be kept moist but not waterlogged. The species is rated H7 for UK hardiness (fully hardy) and corresponds to USDA zones 4–8, so it will tolerate winter frosts common across Britain. Sitings that are sheltered or semi-exposed work best rather than constantly exposed, windy corners. Use Epimedium grandiflorum as a ground cover beneath trees and larger shrubs, in a woodland or shade garden, or to soften the front of a shaded border. Because it only reaches about 0.4 m and flowers April to June, position it where its spring blooms can be seen at eye level rather than obscured by taller neighbours.

Growing conditions

Best soil and position for Epimedium

Sunlight: partial shade, shade
Soil type: Sandy, Loamy, Clay
Soil pH: acidic, neutral, alkaline
Soil moisture: Well-drained, Moist but well-drained
Aspect: north, east, west, south
Exposure: sheltered, semi-exposed
UK hardiness: H7

Plant details

Epimedium grandiflorum size, habit and characteristics

Plant type: perennial
Habit: Clump forming
Foliage: Semi evergreen
Height: 0.4 m
Suggested uses: groundcover, woodland garden, shade garden
Native to: Japan

Care notes

Pruning and caring for Epimedium grandiflorum

Cultivation: Prefers humus-rich, well-drained soil; mulch in winter; avoid waterlogging
Pruning: Cut back old foliage in late winter or early spring before new growth appears
Propagation: Division in spring or autumn; seed propagation possible but slow
Pest resistance: Generally pest-free
Disease resistance: Generally disease-free

Frequently asked questions

How do I grow Epimedium grandiflorum?

Prefers humus-rich, well-drained soil; mulch in winter; avoid waterlogging.

Where is the best place to plant Epimedium grandiflorum?

Epimedium grandiflorum prefers partial shade and shade. It suits sheltered and semi-exposed positions.

What soil does Epimedium grandiflorum need?

Epimedium grandiflorum is adaptable and grows happily in most soil types, including sandy, loamy and clay. It is happy in soil of any pH. Aim for soil that stays well-drained to moist but well-drained.