Cold Hardy
19 specimens
Perennials, shrubs, and trees grown in the ground in zone 6b — including zone-pushing specimens tested at the edge of hardiness. Profiles document establishment, seasonal performance, and any notable cold or heat events.
Akebia quinata
Chocolate Vine
Zone 5-8
Arctostaphylos uva-ursi
Kinnikinnick
Zone 2-7
Beta vulgaris var. cicla
Rainbow Swiss Chard
Zone 6–9
Butia eriospatha
Woolly Jelly Palm
Zone 8–11 (borderline 7b)
Calluna vulgaris (white variety)
Mediterranean White Scotch Heather
Zone 4–7
Camellia sinensis
Tea Plant
Zone 7-9
Chamaedorea microspadix
Hardy Bamboo Palm
Zone 8–11 (Oregon cultivar borderline 7b)
Cornus sericea 'Flaviramea'
Yellow Twig Dogwood
Zone 3–8
Dryopteris tokyoensis
Hondo Wood Fern
Zone 5–8
Gaultheria shallon
Salal
Zone 5–9
Hedera colchica
Persian Ivy
Zone 6–9
Hyacinthus orientalis
Common Hyacinth
Zone 4–8
Lonicera nitida 'Lemon Beauty'
Box-leaf Honeysuckle 'Lemon Beauty'
Zone 6–9
Magnolia × 'Galaxy'
Galaxy Magnolia
Zone 5–9
Pachysandra terminalis
Japanese Spurge
Zone 4–8
Sorbaria sorbifolia 'Sem'
False Spirea
Zone 2–8
Trachycarpus fortunei
Windmill Palm
Zone 7–11 (PNW-selected genetics borderline 6b)
Trachycarpus takil
Kumaon Palm
Zone 7–11 (potentially 6b with established specimen)
Zanthoxylum simulans
Sichuan Peppercorn
Zone 5–9