Daboecia cantabrica - Irish Heath

Daboecia cantabrica, also known as St. Daboec Heath, Irish Heath, or Cantabrian Heather, is less well-known to gardeners than its cousins Calluna and Erica. It is a hardy botanical species with a particularly ornamental long summer flowering. This persistent undershrub stands out from other heathers with its low, dense, and flexible habit and its large pink bell-shaped flowers, clearly visible among the foliage. When conditions are favourable, it forms lovely ground-cover for rockeries, borders of flower beds, and rural hedges in a naturalistic garden.

Daboecia cantabrica, from the Ericaceae family, is native to Western Europe, specifically Ireland, Spain, Portugal, and the Azores Islands. It grows spontaneously on the edge of woodlands and in heathlands, on acidic, sandy, or peaty soils that are poor but do not dry out. Undemanding, it can withstand temperatures around -15 to -18°C (5 to -0.4°F).

Its habit is spreading, carried by prostrate, hairy and glandulous branches at the top, which partially straighten up. At maturity, the plant will measure an average of 38cm (15in) in height with a relative spread of 40cm (16in). Its small ovate-elliptical leaves, 1cm (0.4in) long and 4 to 5mm (0.2in) wide, are evergreen, simple, leathery, and arranged alternately on the branches. Green and shiny on the upper side, they are hairy and curl at the edges on the underside. The long-lasting flowering begins in June and lasts until September-October. Gathered in loose terminal clusters of 3 to 8 units, the flowers are charming pendulous bells measuring 8mm (0.3in) long and 3 to 4mm (0.1 to 0.2in) in diameter. They are a fresh pink colour. This nectar-producing flowering attracts and feeds many pollinating insects.

Hardy and tolerant of very poor and very acidic soils, it is an ideal shrub for an alpine garden as well as by the seaside, planted en masse to vegetate a rockery, or a sandy slope where few plants are willing to grow. It can be planted with Armeria maritima, Azorella, and other heathers like Calluna or even Asteriscus maritimus. It can also be grown in a pot on a terrace or balcony for its slightly wild appearance and long pink flowering: choose a large enough container and keep the (exclusively acidic) substrate always moist.