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Heather

Heather

Calluna vulgaris
Heather, or ling (Calluna vulgaris), is the low, wiry evergreen shrub that colours the moors and heaths of Europe purple in late summer. It grows only 4 inches to 24 inches tall in dense, spreading mats of tiny scale-like leaves, and from July to September it is covered in spikes of mauve (wild) to white, pink, or red (cultivar) flowers that draw an intense traffic of bees - the source of prized heather honey. It is beautiful, wildlife-rich, and extremely cold-hardy, but it is also a fussy plant with two non-negotiable demands: genuinely acidic soil and cool summers. The honest catches: it will not thrive on chalk or in hot, humid heat (NC State advises against planting south of zone 6), and where introduced - notably New Zealand - it has become an invasive weed.
Climate fit: narrow (29/100)
Filler
Pollinator
Border
Container
Light
Full sun / Part shade
Water
Moderate water
Mature size
4-24" tall · 18" apart
Hardy in zones
4a-6b
very cold to cold winters
Life cycle
Perennial
Bloom period
Summer / Fall
AHS heat range
1-6
Plant range authored in AHS heat-zone terms.
Native in Illinois
No

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Pollinated by both wind and a heavy traffic of bees; the flowers yield high-value nectar (NC State) that makes the prized, thick heather honey.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Marginal
Zone 7a
Plotwright
0°F to 5°F
Won't grow here
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
⚠→✕
Marginal today, but likely out of range by 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Plant this, not that

Better fit for this place
For Chicago, IL, these are replacement suggestions: similar plants with a stronger hardiness fit now and/or in 2050.
Globe amaranth (Gomphrena globosa): many round, clover-like magenta flower heads on upright stems among oval green leaves.
Gomphrena globosa
Globe amaranth
Globe amaranth is a warm-season annual in the amaranth family (Amaranthaceae), grown for its round, clover-like flower heads of papery, long-lasting bracts: bright magenta in the species (Missouri Botanical Garden PlantFinder), with cultivars in purple, pink, red, lilac, violet, and white. The true flowers are tiny white to yellow trumpets tucked among the bracts. Kew's WCVP gives its native range as Mexico, Central America (Guatemala, Honduras, Nicaragua, and Panama), and tropical South America (Colombia, Ecuador, Guyana, Bolivia, and Brazil). NC State Extension and Missouri Botanical Garden describe a compact, upright plant 6 to 24 inches tall and 6 to 12 inches wide that flowers from June until frost, takes heat and drought once established, and makes a classic everlasting: the heads keep their color when cut and dried. It is frost-tender. NC State Extension rates it winter hardy only in USDA zones 9 to 11, where it can be grown as a perennial; everywhere else it is sown or planted after the last frost and grown for a single summer, which is why both sources list it as an annual for zones 2 to 11. It is a Gomphrena, not an Amaranthus: the amaranth in its name is the family it shares with love-lies-bleeding and the grain amaranths. It also shares the name bachelor's button with the cornflower (Centaurea cyanus), a different plant.
Annual
Full sun
Moderate water
Zones 2a-11b
Climate: moderate
Border
Filler
Container
Pollinator
Better fit now and in 2050
Now: well-suited
2050: well-suited

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
A low, sprawling mat of trailing lantana (Lantana montevidensis) covered in small lilac flower clusters, in a botanic garden in Seville, Spain.
Lantana montevidensis
Trailing lantana
Trailing lantana (also called weeping lantana, purple trailing lantana, or creeping lantana) is a low, sprawling evergreen shrub or subshrub from southern South America - Uruguay, Paraguay, northern Argentina, Bolivia, and southern and eastern Brazil - named for Montevideo. Unlike common lantana (Lantana camara), an upright shrub with multicolored heads, it stays 12 to 18 inches tall and spreads 3 to 5 feet on vine-like stems, making a mat of dark green, coarsely toothed leaves covered in small clusters of lilac to purple-pink flowers with yellow throats from early summer to frost, and almost all year where winters are frost-free. It is winter hardy only in USDA zones 8a-10b (in zone 8 it dies back to the ground and resprouts in spring if well mulched) and is grown as an annual or container plant in colder regions. Two cautions come first. It is poisonous: NC State Extension rates it medium severity, with toxic fruits, leaves, sap, seeds, and stems, toxic to people, dogs, cats, and horses, and Weeds Australia reports it is suspected of poisoning cattle. And it escapes gardens: NC State Extension records it naturalized in the southern United States, Hawaii, New Zealand, and eastern Australia, Weeds Australia lists it as a declared weed in Queensland, New South Wales, the Northern Territory, and Western Australia, and the UF/IFAS Assessment of Non-native Plants predicts it to be invasive and does not recommend it anywhere in Florida.
Shrub
Full sun / Part shade
Moderate water
Zones 8a-10b
Climate: narrow
Container
Filler
Border
Pollinator
Close-up focus-stacked photograph of a single Chionodoxa forbesii flower showing sky-blue star-shaped petals and a white center with yellow anthers
Chionodoxa forbesii
Glory of the Snow
Chionodoxa forbesii (syn. Scilla forbesii) is a small bulbous perennial native to western Turkey - botanically recorded only from Babadağ Mountain in Muğla Province - producing loose racemes of up to 12 star-shaped, sky-blue flowers with white centers on 4 to 6 inches stems in early to mid-spring. It naturalises freely under deciduous trees and in lawns, filling gaps with carpets of colour before most other plants wake from winter, which is its genuine garden gift. The honest catch is its eagerness to spread: it seeds prolifically and the bulbs multiply quickly, so in a small garden or a formal bed it can crowd out neighbours and become hard to contain once established. All parts are toxic if eaten, and the bulbs need a dry summer dormancy or they rot.
Perennial
Full sun / Part shade
Moderate water
Zones 3a-8b
Climate: moderate
Border
Filler
Pollinator
Container
Sweet alyssum (Lobularia maritima) showing dense clusters of tiny white four-petaled flowers with yellow-green centers and small green buds against narrow gray-green leaves.
Lobularia maritima
Sweet alyssum
A low, mat-forming member of the mustard family from the Mediterranean coast, grown almost everywhere as a cool-season annual for its dense mounds of tiny, sweetly fragrant white four-petaled flowers. The flowering is so profuse it often hides the gray-green foliage entirely. It thrives in cool weather, tolerates dry soil and drought, and is a reliable nectar source for small pollinators.
Perennial
Full sun / Part shade
Low water
Zones 5a-9b
Climate: moderate
Border
Filler
Pollinator
Container
Jasmine tobacco (Nicotiana alata) - three white, five-pointed star-shaped flowers on slender tubes against a blurred green background.
Nicotiana alata
Jasmine tobacco
Jasmine tobacco, also sold as flowering tobacco, sweet tobacco, or winged tobacco, is a tender perennial in the nightshade family (Solanaceae) native to southern and southeastern Brazil, Paraguay, Uruguay, and northeastern Argentina. The true species grows 3 to 5 feet tall from a low rosette of large, hairy basal leaves with winged stalks, and from early summer to frost it carries long-tubed, star-faced flowers, white to greenish-yellow, that open in the evening and pour out a sweet scent through the night for moths. It is perennial only in USDA zones 10a-11b, so most gardeners grow it as a summer annual. Many plants sold as 'flowering tobacco' are compact hybrids (Nicotiana × sanderae and similar strains) up to 24 inches tall whose flowers open by day and are mostly unscented; for the night fragrance, grow the species from seed. Be aware that it is poisonous: every part of the plant contains nicotine, it is harmful if eaten, and the RHS advises gloves when handling it.
Annual
Full sun / Part shade
Consistent moisture
Zones 10a-11b
Climate: narrow
Border
Filler
Container
Pollinator
Bluebeard (Caryopteris × clandonensis 'Dark Knight') - dense clusters of deep violet-blue tubular flowers on upright stems with gray-green aromatic foliage.
Caryopteris × clandonensis
Bluebeard
A compact, mounding deciduous shrub bred in the 1930s by crossing the East Asian species Caryopteris incana (southern China, Taiwan, Korea, Japan) and C. mongholica (Siberia, Mongolia, northern China) - it has no wild range of its own. Its defining virtue is a flush of vivid blue-to-violet flowers on the current year's growth in late summer and early fall, a period when little else in the garden blooms, combined with aromatic gray-green foliage and exceptional drought tolerance once established. The honest catch is its borderline hardiness at the cold edge of its range: in zones 5–6 the woody stems routinely die to the ground in winter and the plant resprouts from the base each spring, behaving more like an herbaceous perennial than a shrub - gardeners in those zones should hold back pruning until new growth confirms the crown has survived.
Shrub
Full sun
Low water
Zones 5b-9b
Climate: narrow
Pollinator
Border
Container
Filler
Curry plant (Helichrysum italicum) showing the full shrub habit with densely branched silver-grey needle-like aromatic foliage and clusters of small bright-yellow button flowers at the stem tips.
Helichrysum italicum
Curry plant
A dwarf, evergreen Mediterranean sub-shrub with intensely aromatic silver-grey needle-like leaves and clusters of small, long-lasting yellow button flowers in summer. Native to the dry, rocky ground of the western and central Mediterranean basin, it is prized for its bold textural foliage and the illusion of a curry scent - although the plant has no culinary relationship to curry spice and its flavor largely disappears on cooking. The honest catch is hardiness: Helichrysum italicum is reliably winter-hardy only to about USDA Zone 8 (around 10°F); in colder climates it either dies outright or must be overwintered frost-free, and even within its range it is short-lived on heavy, wet soils where winter root rot claims it quickly.
Shrub
Full sun
Low water
Zones 8a-10b
Climate: narrow
Border
Filler
Pollinator
Container

Educator packet

Plant packet
Heather educator packet
Heather, or ling (Calluna vulgaris), is the low, wiry evergreen shrub that colours the moors and heaths of Europe purple in late summer. It grows only 4 inches to 24 inches tall in dense, spreading mats of tiny scale-like leaves, and from July to September it is covered in spikes of mauve (wild) to white, pink, or red (cultivar) flowers that draw an intense traffic of bees - the source of prized heather honey. It is beautiful, wildlife-rich, and extremely cold-hardy, but it is also a fussy plant with two non-negotiable demands: genuinely acidic soil and cool summers. The honest catches: it will not thrive on chalk or in hot, humid heat (NC State advises against planting south of zone 6), and where introduced - notably New Zealand - it has become an invasive weed.
Scientific name
Calluna vulgaris
Plant type
shrub
Hardiness
4a-6b
Light
full-sun, part-shade
Moisture
moderate
Spacing
18"
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Heather (Calluna vulgaris). Retrieved 2026, October 9, from https://plotwright.com/plants/calluna-vulgaris
Sources used for this record
This record is compiled from the sources below.
Plants of the World Online (POWO)
Botanical research database
RHS Find a Plant
Botanical research database
NC State Extension Gardener Plant Toolbox
University extension service
GBIF
Botanical research database
Wikipedia (ecoregion articles)
Botanical research database
USDA PLANTS Database
Government data source
Wikimedia Commons
Photo · CC BY 4.0
Plants For A Future
Botanical research database