Index / Search / Lonicera involucrata

§1 Plant

Lonicera involucrata (Richardson) Banks ex Spreng.

vernacular twinberry honeysuckle — species · Caprifoliaceae

USDA: LOIN5
GBIF: 5334253
Rank: species

twinberry honeysuckle (Lonicera involucrata) — Platephotograph · aekurtzCC BY-NC source · iNaturalist ↗

§2Habit & range

Growth habit: Shrub
Duration: Perennial
Group: Dicot
Family: Caprifoliaceae Juss.
Genus: Lonicera

§2a

Native status, by region

AK Alaska Native
CAN Canada Native
L48 Lower 48 States Native

§2b

County-level range

· 29 counties across 5 states/territories

Legend Native · 29 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought: Low
Shade: Low
Moisture use: High
Fire: Medium
Salinity: None
Anaerobic: Low
CaCO₃: High
Hedging: Low

§3b

Climate & soil

Cold tolerance: -43 °F minimum
Frost-free days: 90 min.
Precipitation: 14–32 in/yr
pH range: 5.5–8
Root depth: 12 in min.
Fertility need: Medium
Soil texture: medium, fine

§3c

Form & growth

Growth form: Single Stem
Growth rate: Moderate
Lifespan: Long
Mature height: 10 ft
Height @ 20 y: 10 ft
Foliage texture: Medium
Foliage colour: Green
Porosity (summer): Moderate
Porosity (winter): Porous
Flower colour: Yellow
Fruit colour: Black
Fire resistant: No
N fixation: None
Toxicity: None

§3d

Reproduction

Bloom period: Summer
Seed abundance: Low
Seed begins: Summer
Seed ends: Summer
Spread rate: Slow
Stratify: Yes
Seeds / lb: 343,500
Propagation: seed, cuttings, bare root, container

§3e

Use & availability

Commercial availability: Routinely Available
Nursery stock: Yes
Browse palatability: High
Graze palatability: High
Palatable, human: No
Lumber: No
Christmas tree: No

§4Counties, by state

Recorded in 29 counties across 5 states/territories.

Alaska view state ↗ 4 N ▾

Arizona view state ↗ 5 N ▾

Michigan view state ↗ 1 N ▾

Keweenaw 26083

Montana view state ↗ 18 N ▾

Wisconsin view state ↗ 1 N ▾

Bayfield 55007

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/LOIN5 ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/5334253 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T08:39:52Z