Overview

Iris leptophylla is a upright herbaceous perennial in the genus Iris, part of the Iridaceae family, with blue-green foliage. Iris leptophylla grows best in full sun, and tolerates sandy soils and neutral pH. Its UK hardiness is rated H7. Suggested uses include border planting and architectural plant.

About

Iris leptophylla is a plant species in the genus Iris, it is also in the subgenus Iris and in the section Pseudoregelia. It is a rhizomatous perennial, from China. It has thin, long grey-green leaves, long slender stem and 2 fragrant purple, blue-purple, violet or lavender pink flowers. It is cultivated as an ornamental plant in temperate regions. In the wild it grows across China North-Central, China South-Central and China. Grow it in full sun and sandy soil. In UK gardens it is fully hardy throughout the UK (RHS H7). It works well for border planting and architectural plant. It tolerates neutral soils, dry conditions and south-facing aspects. Grow in well-drained, fertile soil in full sun. Plant rhizomes shallowly with the top exposed to the sun. Water during dry spells but avoid waterlogging.

Wikipedia contributors, CC BY-SA 4.0Iris leptophylla

About the genus

Iris takes its name from the Greek goddess of the rainbow, and for once the naming feels entirely earned. I can't think of another genus that covers so much ground — inky purples, burnt apricots, clean whites, blues that seem lit from inside — or so many situations. There are bearded irises that want their rhizomes baked in full sun, Siberian types happy in ordinary border soil, and species that will sit contentedly at the edge of a pond. What they share is the flower: three petals standing up, three falling away, built with a kind of architectural confidence most plants never attempt. Even out of bloom the foliage earns its place — those upright fans of blue-green leaves hold a border together for months. I grow them for the fortnight in May and June when nothing else in the garden can compete, and I've made my peace with that. Some plants are for the long haul. An iris is an event.

Written by Henry

Growing conditions

Best soil and position for Iris

Sunlight
Full sun
Soil type
Sandy
Soil pH
Neutral
Soil moisture
Dry
Aspect
South-facing
Exposure
Sheltered
UK hardiness
H7

Plant details

Iris leptophylla size, habit and characteristics

Plant type
Herbaceous Perennial
Habit
Upright
Foliage
Blue-green
Suggested uses
Border planting, Architectural plant

Care notes

Pruning and caring for Iris leptophylla

Propagation
Division, Seed
Pest resistance
Resistant
Disease resistance
Resistant

Frequently asked questions

Where is the best place to plant Iris leptophylla?

Iris leptophylla prefers full sun. It suits sheltered positions.

What soil does Iris leptophylla need?

Iris leptophylla grows best in sandy soil. It prefers neutral soil. Aim for soil that stays dry.

Is Iris leptophylla hardy in the UK?

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

How do I propagate Iris leptophylla?

Division, Seed.

More in the Iris genus

Browse all Iris