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Summary
Black twinberry is a US native deciduous shrub found in moist mountain forests, streambanks, and cool canyons throughout western North America. It is one of the few honeysuckles that produces black berries and is easily recognized by its distinctive pairs of glossy black fruits sitting above large, bright red leafy bracts. Although the ripe berries have been eaten traditionally, they should only be regarded as an occasional wild food because they can cause digestive upset and vary greatly in flavour.
Physical Characteristics

Lonicera involucrata is a deciduous Shrub growing to 1.2 m (4ft) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 4 and is not frost tender. It is in flower from May to July, and the seeds ripen from July to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil. The plant can tolerates strong winds but not maritime exposure.
UK Hardiness Map
US Hardiness Map
Synonyms
Caprifolium involucratum (Richardson) Kuntze. Distegia involucrata (Richardson) Rydb. Distegia involucrata var. serotina (Koehne ex Rehder) Cockerell. Lonicera involucrata f. serotina Koehne ex Rehder. Lonicera involucrata var. serotina (Koehne ex Rehder) C.K.Schneid. Xylosteon involucratum Richardson.
Plant Habitats
Woodland Garden Sunny Edge;
Edible Uses
Edible Parts: Fruit
Edible Uses:
Black twinberry is an attractive native shrub with limited food value. Although its fully ripe berries can be edible, their flavor varies considerably between plants, and they may cause digestive upset. It is best regarded as an occasional emergency or curiosity food rather than a dependable wild fruit. For most people, its greatest value lies in its beauty, wildlife benefits, and ecological importance rather than its usefulness as a food plant. Warning: Fully ripe black twinberry fruits are edible, but they can cause mild to severe digestive upset, including abdominal pain, vomiting, and diarrhea. Only a few Lonicera species produce edible fruit, while others range from questionable to mildly poisonous. Correct identification is essential, and even ripe berries should only be eaten sparingly. Harvest berries only when fully ripe and black, as immature red fruits are unpleasant and potentially more irritating [2-3]. Edibility Rating: 2 out of 5 – Edible when fully ripe, but variable in flavor and associated with digestive risks. Better wild fruits are generally available [2-3]. Taste and Preparation: When perfectly ripe, the berries are juicy and mildly sweet, with an aroma reminiscent of grapes, melon, and squash. Immature berries taste extremely unpleasant and should be avoided. You can eat the berries fresh in small quantities or dry them under warm, low-humidity conditions with good airflow. Once dried, they become sticky and raisin-like, although the flavor differs considerably from raisins. Simmering the fruit produces a dark purple broth that resembles grape juice in appearance but has a much less appealing flavor [2-3]. Seasonality: Black twinberry flowers from May to July, with the berries ripening during mid to late summer. Harvesting should only take place once the berries have turned completely black [2-3]. Traditional Uses: Black twinberry appears to have been only a minor traditional food. Its inconsistent flavor and the potential for digestive upset probably limited its importance compared with many other native berries. The shrub has generally been valued more as a medicinal and wildlife plant than as a significant food source [2-3]. Fruit - raw or dried[2, 46, 65, 155]. A pleasant taste[161]. Not tasty enough to be widely sought[212]. The only form we have tried has an incredibly bitter taste[K]. The fruit is about 8mm in diameter[200].
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Antidandruff Antipruritic Disinfectant Emetic Galactogogue Laxative Ophthalmic Pectoral
Poultice
Twinberry was employed medicinally by a number of native North American Indian tribes who used it to treat a range of complaints[257]. It is little, if at all, used in modern herbalism. The bark is disinfectant, galactogogue, ophthalmic and pectoral[257]. A decoction is used in the treatment of coughs and as an eyewash[257]. A decoction of the bark has been applied to a woman's breasts to encourage milk flow[257]. The bark has also been used as a dressing on burns[257]. The leaves are antipruritic and ophthalmic[257]. A poultice of the chewed leaves is applied to venereal sores, itchy skin and boils[218, 257]. A decoction of the leaves is used as an eye wash[257]. The fruits are antidandruff, emetic, laxative and pectoral[218, 257]. An infusion is used to treat chest and stomach complaints and to cleanse the body[257]. The mashed fruit has been rubbed into the scalp as a treatment for dandruff.
References More on Medicinal Uses
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Other Uses
Disinfectant Dye Hair
Black twinberry makes an attractive native ornamental shrub thanks to its yellow flowers, striking red bracts, glossy black berries, and excellent wildlife value. The flowers attract a range of native bees, bumblebees, and other pollinating insects. The berries are an important food source for many birds and mammals, while the dense branching provides valuable nesting and shelter habitat. A purple dye is obtained from the fruit[99, 257]. It is grey when tin is used as a mordant[168]. The berries are rubbed onto the scalp as a hair tonic. It is said to prevent greyness[99]. (don't mix the berries with tin though!![K])
Special Uses
References More on Other Uses
Cultivation details
Black twinberry grows best in cool, moist conditions with fertile, well-drained soils. It prefers partial shade but also tolerates full sun where soil moisture remains reliable. Unlike many southwestern shrubs, it is closely associated with permanent moisture. Habitat: This species naturally occurs along streambanks, moist canyons, forest margins, and mountain woodlands throughout much of western North America, including the higher elevations of the Southwest. USDA Hardiness Zones: USDA Zones 4–8. Growth Rate: Black twinberry has a moderate to fast growth rate, particularly where moisture is plentiful and soils are fertile. Mature Size: Plants typically grow 1–3 meters (3–10 feet) tall, forming rounded shrubs of similar width. Cultivation: Black twinberry makes an attractive native ornamental shrub thanks to its yellow flowers, striking red bracts, glossy black berries, and excellent wildlife value. It performs best in gardens with consistently moist soils and benefits from occasional summer watering in dry climates. Identification: Black twinberry is a thornless deciduous shrub with opposite oval leaves and paired yellow tubular flowers. The flowers are subtended by conspicuous leafy red bracts that become even more striking as the paired berries mature. The glossy black fruits, produced in pairs, are one of the easiest features to use to identify this distinctive mountain shrub. Similar Species: Black twinberry may be confused with other honeysuckles (Lonicera spp.), although few possess its combination of paired black berries and large red bracts. It should also be distinguished from snowberries (Symphoricarpos spp.), which bear white berries that are considered poisonous. An easily grown and very tolerant plant, succeeding in any fertile soil, and preferring a good moist soil in a sunny position[11, 200]. It produces less fruit when grown in the shade[200]. Plants have proved to be quite wind-resistant when growing on an exposed site in Cornwall[K]. Plants are hardy to about -25°c[184]. Closely allied to L. ledebourii[11]. There are some named forms, developed for the ornamental garden[182]. 'Humilis' is a smaller form and 'Serotina' is later flowering[182].
References Carbon Farming Information and Carbon Sequestration Information
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Plant Propagation
Propagation is usually by seed, which benefits from cold stratification, or by semi-hardwood cuttings or layering. Seed - best sown as soon as it is ripe in a cold frame. Stored seed requires 2 months cold stratification[113] and should be sown as soon as possible in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 7 - 10cm with or without a heel, July/August in a frame. Good percentage[78]. Cuttings of mature wood from the current season's growth, 15- 20 cm with or without a heel, November in a cold frame. Good percentage[78]. Layering in autumn[200].
Other Names
If available other names are mentioned here
Twinberry honeysuckle, Black twinberry, fly honeysuckle.
Native Range
NORTHERN AMERICA: United States (Alaska (south), Michigan (northwest), Wisconsin (Gallatin Co.), Colorado (west), Idaho (south), Montana, Oregon, Washington, Wyoming, New Mexico, Arizona, California, Nevada (n.e. (Elko Co.)), Utah), Canada (Québec, Ontario, Saskatchewan, Alberta, Manitoba, British Columbia), Mexico (Chihuahua (north))
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it's worth checking.
Low. Black twinberry is a native woodland shrub with no tendency to become invasive.
Conservation Status
IUCN Red List of Threatened Plants Status : Not listed.
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
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Expert comment
Author
(Richardson.)Spreng.
Botanical References
1143200
Links / References
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