A cold-hardy shrub bearing elongated blue-purple berries with a flavor reminiscent of blueberry crossed with black currant, ripening weeks before strawberries.
Lonicera caerulea · also called Haskap, Blue honeysuckle
As soon as the ground can be worked, 4–6 weeks before last frost.
6–8 weeks before the ground freezes to allow root establishment.
Honeyberry is among the earliest fruiting shrubs in the temperate garden, often ready in late spring before most soft fruit. It tolerates temperatures well below freezing even in full flower, making it reliable where late frosts routinely kill other fruit crops.
A little history. Native to boreal regions of Russia, Japan, and northern China; the species has been extensively selected in both Russian and Japanese breeding programs, producing two genetically distinct groups that must cross-pollinate to set fruit reliably.
Strongly prefers an in-ground bed; roots spread wide and deep. Container culture is possible short-term but limits long-term yield. In containers: 25-gallon half-barrel minimum; one plant per container. Space plants 60 inches (150 cm) apart.
Deep soak once or twice a week during the first two growing seasons; established shrubs need water mainly during fruit swell. Water when the top 2 inches of soil feel dry, or leaves show the first hint of wilting in afternoon heat. Aim for about 1 inch per week including rain; increase to 1.5 inches during fruit development.
Apply compost in early spring before bud break; side-dress (scatter fertilizer along the drip line and water in) once more after harvest. What to use: balanced compost or a low-nitrogen organic fertilizer such as 4–4-4; avoid high nitrogen after midsummer.
No pruning needed for the first 3 years. From year 4 onward, remove the oldest, thickest canes at the base each late winter to keep the shrub open; aim to retain 6–8 healthy canes of mixed ages.
It's ready when berries turn fully blue-purple all the way through — taste one; it should be sweet-tart with no astringency. Color alone is not enough; berries hold blue skin while still under-ripe inside. Cup a cluster in your palm and roll ripe berries off with your thumb; ripe fruit detaches with almost no resistance. Harvest every 2–3 days as berries ripen unevenly within a cluster.
Refrigerate unwashed in a shallow container for up to 1 week. Freeze on a tray in a single layer, then transfer to bags; frozen berries keep well for 12 months.
Plant at least two genetically distinct cultivars — one from a Russian-bred group and one from a Japanese-bred group — within 10 feet of each other to ensure cross-pollination and full crops.
No special protection needed in most temperate climates; established shrubs are among the hardiest fruiting plants available to home gardeners. In the first winter after planting, a light mulch over the root zone helps prevent frost heave.
Garlic
Gardeners have long tucked garlic around fruiting shrubs in the belief its scent keeps browsing animals and aphids away. No trial confirms it for honeyberry, but garlic is shallow-rooted and harvested in midsummer, so it costs the shrub little.
Chives
Chive flowers in late spring feed hoverflies and tiny parasitic wasps whose young eat aphids, the pest most likely to curl honeyberry shoot tips. Under low pest pressure this often keeps aphid numbers from building.
Borage
Borage blooms all summer and draws in hoverflies, lacewings, and ladybugs that hunt aphids on new honeyberry growth. It flowers well after the shrub has set fruit, so it adds cover rather than competing for early pollinators.
Strawberry
A skirt of strawberries under the shrub shades the soil, holds moisture, and crowds out weeds around the shallow honeyberry roots. Keep the runners about 12 inches back from the crown and water for both, since the two share the top few inches of soil.
Black Walnut
Roots and fallen husks of black walnut reliably stunt many garden plants, and honeyberry's tolerance has not been established. Plant well outside the walnut's root zone — allow at least 50 feet from the trunk — rather than gambling on a shrub meant to live decades.
A perennial — it holds its spot for years, so it sits outside the annual rotation.
Honeyberry is a permanent planting, so rotation does not apply and there is no family gap to keep — it is a moderate feeder that holds its ground for 20 years or more. It leaves no bed to hand on; refresh the soil in place with compost each spring instead.
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