Field Guide
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Heather
Calluna vulgaris
Not yet photographed by the community
Colours upland moors purple in late summer.
Species Profile
Green List—common and secure throughout the UK, though moorland habitats face threats from afforestation and land-use change.
- Lifespan
- 15–30 years in the wild, with some individuals persisting for over 40 years
- Size & Weight
- 15–60 cm tall; typically 30–50 cm in UK moorlands
- Habitat
- Open moorlands, heathlands, and acidic grasslands, thriving on nutrient-poor, well-drained soils in cool, exposed upland regions.
- UK Distribution
- Widespread across Scotland, northern England, Wales, and south-western England; absent from lowland chalk and limestone areas; resident year-round throughout its range.
- Diet
- Not applicable—a flowering plant that produces nectar and pollen; relies on photosynthesis.
- Predators
- Not applicable as a plant, though seedlings may be grazed by sheep, deer, and grouse.
- Mating Season
- Flowers July to September; pollinated by wind and insects (primarily bees and butterflies) during this period.
- Breeding
- Produces small capsular fruits containing numerous tiny seeds; seeds are dispersed by wind and can remain viable in soil for decades.
- Behaviour
- Heather is a foundational species in UK heathland ecosystems, providing food and shelter for numerous insects, birds, and mammals. It is exceptionally hardy, recovering well after fire and grazing, and forms dense mono-dominant stands that exclude competing plants. Managed burning is used in many moorlands to promote heather regeneration.
- •Heather honey is a prized UK product with a distinctive dark colour and strong flavour, produced when bees forage extensively on blooming heather moors.
- •The plant contains ericoid mycorrhizal fungi in its roots, allowing it to thrive in acidic, nutrient-poor soils where most competitors cannot survive.
- •Historically, heather was used to make brooms, thatch, and bedding; it was also brewed into heather ale in Scotland and Northern England.
- •A single heather plant can produce over 250,000 seeds, but seeds require specific conditions—exposure to heat, light, and cold—to germinate.
- •Heather moorlands are among the UK's most biodiverse semi-natural habitats, supporting red grouse, mountain hares, adders, and numerous specialist insects including the heather beetle.
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