Redvein enkianthus
Enkianthus campanulatus
Redvein enkianthus is a deciduous shrub endemic to Japan, valued for a two-season display: pendant clusters of creamy-white, red-veined bell flowers in spring followed by some of the most intense scarlet-to-copper autumn colour of any garden shrub. It holds an RHS Award of Garden Merit and is considered the hardiest of its genus, surviving to around -20°F (zone 4b). The honest catch is non-negotiable soil chemistry: it demands consistently moist, fertile, acid soil (pH 4.5-6.0) and will sulk or die in alkaline or clay ground - no amount of surface treatment permanently corrects a limey site, so confirm soil pH before planting. Note too that, as a member of the heath family, its tissues are best treated as toxic if ingested.
Climate fit: narrow (26/100)
Focal point
Border
Structure
Pollinator
Light
Full sun / Part shade
Water
Consistent moisture
Mature size
8-15 ft tall · 5 ft apart
Hardy in zones
4b-7b
very cold to cold winters
Native in Illinois
No
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Pendant bell flowers are visited by long-tongued bumblebees for nectar - Bombus ardens is documented visiting E.
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
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 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...
Where this plant fits
Suitable across 32 ecoregions - 20 climate-resilient through 2070 · 5 suited today · 7 newly possible by 2070. Best matches first.
Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Educator packet
Plant packet
Redvein enkianthus educator packet
Redvein enkianthus is a deciduous shrub endemic to Japan, valued for a two-season display: pendant clusters of creamy-white, red-veined bell flowers in spring followed by some of the most intense scarlet-to-copper autumn colour of any garden shrub. It holds an RHS Award of Garden Merit and is considered the hardiest of its genus, surviving to around -20°F (zone 4b). The honest catch is non-negotiable soil chemistry: it demands consistently moist, fertile, acid soil (pH 4.5-6.0) and will sulk or die in alkaline or clay ground - no amount of surface treatment permanently corrects a limey site, so confirm soil pH before planting. Note too that, as a member of the heath family, its tissues are best treated as toxic if ingested.
Scientific name
Enkianthus campanulatus
Plant type
shrub
Hardiness
4b-7b
Light
full-sun, part-shade
Moisture
consistent
Spacing
60 inches
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). Redvein enkianthus (Enkianthus campanulatus). Retrieved 2026, August 20, from https://plotwright.com/plants/enkianthus-campanulatus
Sources used for this record
This record is compiled from the sources below.





