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Lonicera involucrata
About Twinberry (Lonicera involucrata) Nurseries Show All Photos Lonicera involucrata is a species in the Caprifoliaceae (Honeysuckle) family that is native to northern and western North America, from southern Alaska east across boreal Canada to Quebec, and south through the western United States to California, and to Chihuahua in northwestern Mexico. In California there are two recognized varieties with differing ranges. Var. involucrata has mostly yellow flowers and is found in the Sierras. Var. ledebourii has mostly red-orange flowers and is found along the coast and in the Coast Ranges from Santa Barbara County northwards. It grows at elevations from sea level to 2,900 meters. It is a large shrub that can grow 0.5-5 meter high, with shoots with a quadrangular cross-section. The leaves are elliptic, to oval-shaped, 3-16 centimeter long and 2-8 centimeter broad; they are hairy along the margins and on the underside, and have a distinctive abruptly acuminate tip. The flowers are tubular, hairy, 1-2 centimeter long, and are monoecious; they are produced in pairs subtended by a pair of reddish basal leafs 2-4 centimeter across. The fruit is a 6-12 millimeter diameter black berry containing several small seeds; it is edible but bitter and best left to the birds. In the garden this plant likes regular water but can survive on reduced watering. The flowers are welcome in summer when many other plants have finished blooming.
Plant Description
Plant Type

Max. Height
1.6 - 16.4 ft (0.49 - 5 m)

Max. Width
3 - 4 ft (0.9 - 1.2 m)


Growth Rate

Winter Deciduous

Flower Color
Yellow, Orange, Red

Flowering Season

Native Status

Natural Setting
Site Type
Moist places

Part Shade, Sun

Elevation ?
-12' - 11850'

Annual Precip. ?
9.7" - 109.4"

Summer Precip. ?
0.15" - 3.91"

Coldest Month ?
18.4° F - 53.8° F

Hottest Month ?
39.7° F - 76.2° F

Humidity ?
0.01 vpd - 24.55 vpd

Soil Description
Prefers moist, sandy soil

Soil PH
4.0 - 7.0


Cold Tolerance(° F)
Tolerates cold to -20° F

Wildlife Attracted
Hummingbirds and bees are attracted to the flowers. Other birds are attracted to the fruits

Landscaping Information
Ease of Care
Very Easy

Water Requirement ?
Moderate - High
Extremely Low
Very Low
Moderate - High

Moderately Popular

Max. Summer Water ?
2x/month, 3x/month
No Summer Water
Keep moist

Deep Organic, Organic with Rocks

Common uses
Hedges, Deer Resistant, Hummingbird Gardens, Bird Gardens

Nursery Availability
Commonly Available

Other Names
Common Names
Bearberry Honeysuckle, Twinberry Honeysuckle

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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