Overview

Cortusa matthioli is a perennial in the genus Cortusa, part of the Primulaceae family. Cortusa matthioli grows best in partial shade, and tolerates well-drained and humus-rich soils and neutral to alkaline pH. Its UK hardiness is rated H5. Suggested uses include rock gardens, alpine gardens and borders. It is native to Europe and temperate Asia.

About

Cortusa matthioli is a perennial in the Primulaceae that flowers in May to June. Native to Europe and temperate Asia, it performs best in partial shade. Plant into a well-drained, humus-rich soil that remains moist and is neutral to alkaline in reaction. It is H5 (hardy) for most UK gardens.

Wikipedia contributors, CC BY-SA 4.0 — Primula matthioli

About the genus

Primula is a genus of herbaceous flowering plants in the family Primulaceae. They include the primrose, a familiar wildflower of banks and verges.

In the garden

Cortusa matthioli is a perennial primula relative native to Europe and temperate Asia. In the UK it produces its flowering display in May to June, so its main interest is a concentrated late-spring contribution to the bed or rockery. Site plants in partial shade where the soil stays cool; morning sun and protection from hot afternoon sun suit it well. It prefers a well-drained, humus-rich substrate with a neutral to alkaline reaction and consistent moisture — aim for soil that holds moisture without becoming waterlogged. Incorporating leaf mould or garden compost at planting improves structure and helps retain the damp, humus-rich conditions this species favours. H5 hardiness means it is classed as hardy in most UK gardens, though young specimens appreciate a light mulch over winter in exposed sites. Use Cortusa matthioli in rock gardens, alpine beds or at the front of mixed borders where its May–June flowers can be seen close to eye level. Grouping plants gives a more visible spring display and siting them among stones or low edging helps maintain the cooler, moist conditions they prefer. The concentrated May–June bloom period makes it particularly useful for filling gaps between early-spring bulbs and later-summer perennials.

Growing conditions

Best soil and position for Cortusa

Sunlight

partial shade

Soil type

well-drained, humus-rich

Soil pH

neutral to alkaline

Soil moisture

moist

UK hardiness

H5

Plant details

Cortusa matthioli size, habit and characteristics

Plant type

perennial

Suggested uses

rock gardens, alpine gardens, borders

Native to

Europe, temperate Asia

Care notes

Pruning and caring for Cortusa matthioli

Cultivation

Prefers cool, shaded locations with moist, well-drained soil rich in organic matter.

Pruning

Remove spent flowers to encourage tidy growth.

Propagation

Seed, division

Frequently asked questions