How to Grow Elecampane: Complete UK Guide

Elecampane is one of those plants that makes you stop when you first encounter it in a herb garden. It is simply enormous — broad basal leaves that can reach half a metre across, tall flowering stems pushing up to 1.5m or more by midsummer, topped with bold yellow daisy flowers that the bees cannot get enough of. In a garden of modestly proportioned herbs, elecampane announces itself.

It also has one of the longest herbal histories of any European plant. Pliny the Elder wrote of it. It was cultivated in monastery gardens across medieval Europe. It was a standard of the British herbal tradition from the medieval period through to the nineteenth century, when it gradually disappeared from common cultivation. We think it deserves to come back.

What is Elecampane?

Elecampane (Inula helenium) is a tall, fully hardy herbaceous perennial native to central Asia and naturalised across much of Europe, including parts of the UK. It is a member of the daisy family (Asteraceae) and is related to, though considerably larger than, the ornamental inulas sometimes grown in garden borders. The root — large, fleshy, and intensely aromatic — is the part used in herbal practice.

The name has ancient origins: Inula helenium references Helen of Troy, whose tears were said to have given rise to the plant where they fell. The common name elecampane derives from the Latin enula campana — the plant of the fields. It has been part of European herbal practice, under various names, for at least two thousand years.

Growing Elecampane in the UK

Soil and Position

Elecampane is accommodating and vigorous. It grows in most UK soils — from reasonably fertile loam to moderately heavy clay — and tolerates a wide pH range. It prefers a sunny to partly shaded position and soil that retains reasonable moisture, though it will manage in drier conditions once established. Give it space — an established elecampane is a substantial plant that will dwarf most of its neighbours.

When to Plant

Plant in spring (April to May) or early autumn (September). Elecampane establishes quickly and will produce significant growth in its first season, flowering from its second year onwards.

Planting Out

• Space at least 60-90cm from neighbouring plants — elecampane needs room
• Plant at the same depth as the original container
• Water in well after planting
• Position at the back of a border — the height and spread mean it will shade shorter plants in front of it

Watering and Maintenance

Water regularly in the first growing season. Once established, elecampane is largely self-sufficient. It is fully hardy (RHS H7) and will die back to the ground in winter, re-emerging reliably in spring — often earlier than expected, with large fresh leaves that are genuinely impressive. Divide large clumps every three or four years to keep them productive.

Harvesting Elecampane Root

The root is harvested in autumn, from a plant in its second or third year. By this point the root will be substantial — a mature elecampane develops a root system that can weigh several kilograms. Lift carefully with a fork, wash thoroughly, and slice or chop before drying. The fresh root has a remarkable aroma — sweet, camphoraceous, complex — that is one of the most distinctive scents in the herb garden.

Dry chopped root at low temperature (40°C maximum) in a dehydrator, or in a warm oven on its lowest setting with the door slightly ajar. Fully dried root stores well in an airtight jar for up to two years.

Elecampane in Herbal Tradition

Elecampane has been used in European herbal practice for at least two thousand years. It appears in the writings of Hippocrates, Dioscorides and Pliny. In British herbal practice it was widely used from the medieval period onwards, particularly valued for its traditional association with respiratory support and digestive wellbeing. Nicholas Culpeper devoted considerable space to it. The herbalist Maude Grieve, in her 1931 work, described it as one of the most important herbs in the traditional British repertoire.

Its decline in the twentieth century was not due to any change in its herbal standing — simply a gradual shift in cultivation and commercial availability. As with many of the herbs in this guide, it fell out of mainstream horticulture without ever falling out of favour with serious herbalists.

As with all herbs, we recommend consulting a qualified herbalist or healthcare professional before use, particularly if you are pregnant, breastfeeding or taking medication.

More in the Rare Herbs Series

Read our full guide: Hard to Find Herb Plants in the UK: A Grower's Guide, or explore:

• How to Grow Gotu Kola in the UK
• How to Grow Wood Betony in the UK
• How to Grow Gypsywort in the UK
• How to Grow Marsh Skullcap in the UK
• Where to Buy Rare Herb Plants in the UK

Frequently Asked Questions

How tall does Elecampane grow?

In good conditions, 1.5-1.8m by midsummer. The basal leaves in spring can reach 50cm across. Plan accordingly — this is a plant for the back of a large border.

Is Elecampane invasive?

It spreads by underground rhizomes and self-seeds moderately. It is vigorous but manageable — deadhead spent flowers to prevent seeding, and divide the clump every few years to keep it in check.

Is Elecampane hardy in the UK?

Fully hardy (RHS H7, to below -20°C). Dies back completely in winter and re-emerges reliably each spring.

The information in this article is intended for general interest and educational purposes only. It does not constitute medical advice. Always consult a qualified healthcare professional before using any plant or herb for health purposes, particularly if you are pregnant, breastfeeding, or taking medication.