Credit: David Robinson
Echium candicans
Background and story
The Pride of Madeira (Echium candicans) is a striking evergreen shrub native to the island of Madeira, where it grows on sunny slopes and coastal cliffs.
Introduced to Ireland and Britain in the 18th and 19th centuries, it quickly became one of the most recognisable “exotic” plants in mild coastal regions.
Its broad, slightly hairy leaves form a rounded shrub, topped in late spring and early summer with dense, cone-shaped spikes of vivid blue-purple flowers, which are highly attractive to pollinators and provide a strong visual focal point.
Did you know?
It is endemic to a single island. Echium candicans occurs naturally only on Madeira, making it a true island specialist with a very restricted native range.
Hardiness and conservation
The recorded RHS hardiness rating is H1C, which means this plant may be grown outside in summer, but still needs frost-free winter protection. The recorded USDA/PFAF hardiness value is 9-11, which is useful as a broad winter-temperature guide, but it should not be read as a direct substitute for the RHS rating. Local hardiness always depends on local shelter, drainage, winter wet, salt-laden wind and the plant’s age and establishment.
The IUCN Red List status recorded here is Data Deficient (DD). This means there is not enough information to assess the extinction risk properly. The assessment year recorded in the plant data is 2011.
Additional notes for Ireland and Britain
In Ireland and Britain, Echium candicans is marginally hardy but very successful in mild coastal gardens, particularly in areas such as around Dublin Bay. It prefers full sun, shelter from cold winds, and sharply drained soil, often thriving in gravel gardens or against south-facing walls. It typically grows to 1.5–2.5 metres, forming a broad, rounded shrub. While generally long-lived in favourable conditions, it may suffer damage or be lost in colder winters, though it can sometimes regenerate from the base or reseed. Its combination of bold foliage and reliable flowering makes it one of the most effective structural shrubs in coastal planting.
From a conservation and hardiness perspective, Echium candicans is not considered threatened, though it has a restricted native range on Madeira. It is widely cultivated and naturalised in climatically suitable regions. In terms of hardiness, it tolerates light frost (typically around −3°C to −5°C) but is vulnerable to prolonged cold and especially wet, heavy winter soils, which can lead to root rot. Its success in Irish gardens depends primarily on drainage, shelter, and microclimate, rather than absolute temperature. In an Irish context, it remains one of the most rewarding and widely used exotic shrubs for coastal settings.
Notable features
- Its huge flower spikes are packed with hundreds of tiny blooms. Each conical inflorescence is made up of densely packed small tubular flowers, creating the striking blue “spire” effect seen from a distance.
- It is a major nectar source for pollinators. The flowers produce abundant nectar and attract a wide range of visitors, especially bees, along with butterflies and other insects.
- It thrives in harsh coastal conditions. In its native habitat it grows on cliffs and exposed slopes, tolerating wind, salt spray, poor soils, and drought, which explains its success in coastal gardens.
- It is surprisingly short‑lived for such a large plant. Individual plants typically last only a few years (often 3–5), but maintain themselves by self‑seeding freely in favourable conditions.
Earlscliffe notes
We have a large number of these plants around the garden. The plants themselves last a few years before dying back, but leave lots of seed to regenerate the next year.