Haskap

Lonicera caerulea

Family: Caprifoliaceae

Pet & Human Safety

People: No hazard foundPets: Not on the ASPCA lists as we read them

Human edibility

Edible

Edible parts

fruit (berries)

Hazardous parts

Not yet checked.

Preparation

Not yet checked.

Hazard type

Not yet checked.

Hazard route

not stated by the sources

How complete this information is

The safety information on this page is partial. Where a source covers a point, it is shown; where none does, the page says so.

Toxic to pets

No ASPCA entry found.

No source we checked assesses this plant for pets, so the app makes no pet claim either way.

Look-alike warning

Could be mistaken for Amur honeysuckle (Lonicera maackii). To tell them apart: NC State lists the fruit as causing severe diarrhea when eaten; poison severity Low, toxic principle saponins..

Look-alike warning

Could be mistaken for Japanese honeysuckle (Lonicera japonica). To tell them apart: NC State lists the fruit as toxic only if large quantities are eaten, with vomiting, diarrhea and other signs; poison severity Medium, toxic principle saponins..

Look-alike warning

Could be mistaken for Twinberry honeysuckle (Lonicera involucrata). To tell them apart: The USDA Plant Guide says the plant is considered toxic and its berries noted as poisonous, and advises against using them..

Look-alike warning

Could be mistaken for All other honeysuckles (general). To tell them apart: RHS (UK) says all other honeysuckle berries are toxic if eaten in large quantities. This is one lower-tier source and is shown as one source reports..

Look-alike warning

Could be mistaken for Plants that share its name. To tell them apart: Honeysuckle Fuchsia (non-toxic on ASPCA) is not honeysuckle..

Poison control

If someone has collapsed, cannot be woken, is having a seizure or has trouble breathing, call 911 now. For any other possible poisoning, call Poison Help: 1-800-222-1222.

Emergency number source: U.S. federal law (47 U.S.C. § 251(e)(3)), read 2026-10-07.

Naturalist Lore

Historical Background & Breeding Lore

The history of this plant and its name, and how it was bred, where we have them.

Get the app: coming soon

Care

Hardiness zones: Canada (University of Saskatchewan, hardiness system not named on the page): Zones 1 to 4 in the page introduction; hardy to Zone 1 in another section; the page does not reconcile the two; Canada (Ontario OMAFRA, system not named on the page): Hardiness zone 2; viable blossoms noted below -6 C; USDA (Iowa State): Zones 2 to 6; USDA (Wisconsin Extension): Zones 1 to 8; Utah State: No zone range given; cold-region types suffer scorching, mildew and early leaf drop above zone 6
Mature size: University of Saskatchewan: 4 to 7 ft (1.2 to 2 m) tall and about 4 ft (1.2 m) wide. Iowa State: 4 to 6 ft tall. Utah State: up to about 6 ft high and wide, with named varieties ranging from 4 to 6 ft. Wisconsin Extension: 3 to 6 ft tall. Spacing: University of Saskatchewan: at least 3 ft (1 m) from each other and other plants. OMAFRA: about 2.5 ft (0.75 m) in the row for a hedge, about 4.3 ft (1.3 m) or more for individual bushes, about 8.2 ft (2.5 m) or more between rows. Bors: about 3.3 ft (1 m) in the row for a hedge, about 4.3 ft (1.3 m) for individual bushes. Utah State: 3 to 4 ft in the row and 6 to 10 ft between rows.
Where it comes from: Iowa State says honeyberry is a honeysuckle native to cold regions of Europe, Asia and North America. Single source.

Soil & Drainage

Pruning & Flush Rhythm

Feeding Schedule

How to prepare the soil, when and what to feed, and how and when to prune where that applies.

Get the app: coming soon