Shrub · Caprifoliaceae
Honeyberry
Lonicera caerulea
Set two cultivars side by side and you'll gather the earliest berry of the year, sweet-tart and frost-tough.
Full sun
Every 5–7 days
USDA 2–7
4–6 ft · 1.2–1.8 m
Overview
Honeyberry, which you may also hear called haskap, is the edible-fruited honeysuckle, and its long blue berries are usually the very first fruit you get to pick each year. It sits in the honeysuckle family and grows wild along riverbanks and damp northern ground, so it will always prefer steady moisture to a dry corner. The flavor lands somewhere between a blueberry and a raspberry, lovely straight off the bush or tucked in the freezer for later.
The real gift of this shrub is how tough it is, which makes it wonderfully forgiving for a first bush. The wood comes through down to -45°C (-49°F), and the early flowers brush off frost to about 19°F, so a late cold snap rarely robs you of the crop. It's easygoing about soil too, happy from acidic ground all the way up to chalky, limey beds, a real relief after the fussy blueberry.
The one favor it asks is company, and once you know that, success comes easily. A lone bush blooms with real enthusiasm and then sets almost nothing, because honeyberry can't pollinate itself. Plant two unrelated cultivars that flower together and the bees handle the rest, leaving you with generous clusters of berries by late spring.
Care
The short version: give it full sun and steady moisture, tuck a second compatible cultivar in close for pollination, and drape the bushes with netting against birds as those early berries start to color, and you'll do just fine.
Light
Honeyberry gives its best fruit in full sun, though it will happily accept partial sun or light shade. Where summers get hot, a touch of afternoon shade genuinely helps it manage the heat it wasn't built for.
Water
This isn't a plant that likes to go dry. Coming from riverbanks and damp ground, it wants a deep soak every 5 to 7 days, and more through a heat wave. Drip irrigation keeps things nicely even without wetting the leaves.
Soil
Give it moist, well-drained loam and it settles right in. Honeyberry is remarkably adaptable and copes with a pH from 5.0 to 8.0, even chalky, calcareous soils most berries refuse, so you'll rarely need to amend the ground for it.
Temperature
Few fruit shrubs are as hardy as this one. The wood survives from -45°C to 30°C (-49°F to 86°F), and the spring flowers take frost down to about 19°F, though sustained summer heat past zone 6 does wear on the plant.
Humidity
Everyday outdoor humidity in the 40% to 70% range suits it beautifully. Good airflow matters far more than any exact figure, since crowded, still air is what invites powdery mildew late in the season.
Feeding
Feed it once in early spring with a balanced granular such as 16-16-16, about a half cup per plant. Hold off on late-season nitrogen, which pushes soft growth that won't harden before winter.
Pruning
Let a young bush be for its first 3 to 4 years, taking out only dead or damaged wood, so there's very little to get wrong. From around year 6, thin up to 25 percent of the oldest branches each winter while it's dormant to keep the canopy open and fruitful.
Repotting
Since this is an in-ground shrub rather than a container plant, repotting hardly ever comes up. If you do start one in a pot, move it to its permanent home once roots begin circling or water runs straight through.
Size & spacing
A grown bush reaches roughly 4 to 6 feet (120 to 180 cm) tall and about as wide. Allow it that same spread when spacing so air moves freely and a pollinator partner sits close enough for the bees.
When to plant
Honeyberry keeps to an early schedule, and it's a forgiving one to follow. Settle new plants in during early spring or early fall, look for cream-yellow flowers in the first warm days, and gather the ripe blue berries from late May into mid June, often before your strawberries are anywhere near ready.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Early spring or early fall
- Harvest: Blooms very early spring with cream-yellow flowers that tolerate frost to about 19°F; berries ripen late May to mid June, often just before strawberries
Hardiness
USDA hardiness zones: 2–7
Temperature: down to -46°C
Troubleshooting
Nearly every honeyberry hiccup traces back to a missing pollinator partner, hungry birds, or summer heat where the climate runs too warm for it. Match what you're seeing to the notes below and the remedy is usually gentle and clear. Spot the early signs and you'll rescue the season's crop with room to spare.
Plenty of flowers yet hardly any berries
Don't worry, this one has a simple cause: honeyberry can't pollinate its own blooms, so a bush growing alone will flower beautifully and still leave you almost empty-handed. What it needs is a second, unrelated cultivar flowering at the same time, such as Tundra alongside Aurora or Honey Bee, set within about 6 feet so the bees can travel easily between them. A few early flowers close by help coax those pollinators out while the days are still chilly.
Fix:
- Plant at least two unrelated cultivars that bloom together (for example Tundra with Aurora or Honey Bee)
- Site them within about 6 ft of each other to aid bee transfer
- Encourage early-spring bees with companion flowers
A dusty white film settling on the leaves
This is powdery mildew, and it usually turns up after you've picked, when the late-summer air sits warm and still. Take heart, it seldom takes your fruit, though it can leave a bush bare earlier than you'd like. Gently pull away the most affected leaves, open up the spacing so air moves through, and lean on a resistant cultivar such as Tundra.
Fix:
- Remove and dispose of badly affected foliage
- Improve spacing and airflow
- Choose mildew-resistant cultivars such as Tundra
Scorched leaves and early drop where summers turn hot
Honeyberry is a cold-country plant at heart, so heat stress can catch it out past zone 6, and the Russian-type cultivars feel it most. The leaves brown along their edges and the bush drops them early, but it's a recoverable setback. Offer afternoon shade with steady soil moisture, and reach for the Japanese or Kamchatka types, which handle warmth much more happily.
Fix:
- Provide afternoon shade and steady soil moisture
- Use Japanese or Kamchatka-type cultivars better suited to warmth
Berries disappearing just as they ripen
Birds get to honeyberry before nearly anything else ripens, because the fruit colors up so early in the year. The good news is the answer is easy: lay bird netting over your bushes before the berries turn blue, and leave it in place through late May and June until you've gathered them all.
Fix:
- Drape bird netting over plants before fruit ripens
- Net in late May through June
Toxicity
You can breathe easy here: every part of the honeyberry is safe. The ripe blue fruit is grown as a food crop and eaten by people, and the leaves hold nothing that could hurt pets, livestock, or wildlife. The only thing to mind is not mixing it up with the ornamental honeysuckles, whose red berries are not for eating.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
You can relax with cats around. A little taste of a leaf or berry won't poison your cat, even if a big helping of any plant might leave one briefly queasy.
Dogs None
Nothing to fear for your dog. Those blue berries are the very same fruit people enjoy, and the leaves carry nothing that could do harm.
Horses Safe
A horse can graze happily beside a honeyberry bush, because neither the fruit nor the leaves hold any toxin to trouble it.
Rabbits Safe
Rabbits are perfectly fine near honeyberry. They might nibble at the leaves, and a couple of ripe berries make a gentle, harmless treat.
Livestock Safe
Cattle, goats, and sheep can browse it with no worry at all. There's simply no poisonous compound in the plant to concern you.
Birds Safe
Birds adore the early fruit and take no harm from it. Honestly, your biggest challenge will be saving a few berries for yourself.
People Safe
The ripe blue berries are raised as a food crop and enjoyed fresh, frozen, or made into preserves. They're wholesome to eat and need no special care.
No special handling required; ripe berries are edible and safe to pick by hand.
Varieties
Most honeyberry cultivars come out of breeding programs in Russia, Japan, and Canada, and you'll want at least two that flower together. Here are the ones worth getting to know.
Tundra
You'll find its firm fruit stands up well to machine harvest, and it fends off powdery mildew more reliably than most.
Borealis
It offers large berries whose sweet-tart flavor is counted among the finest for eating straight off the bush.
Indigo Gem
It rewards you with heavy pickings of small, tangy berries that come into their own in jams, juice, and other processing.
Aurora
This vigorous University of Saskatchewan cultivar carries large fruit and blooms so long that it makes a dependable pollinizer for the Boreal and Honey Bee group.
Honey Bee
A University of Saskatchewan pollinizer with tart fruit and a stretched-out bloom that lines up nicely with its partners.
Companions
Honeyberry's best neighbors are the ones that help it set fruit: a second compatible cultivar to cross-pollinate, and early flowers that pull bees in while the bloom is still cold.
Plant near
A second unrelated haskap cultivar: Required cross-pollinizer that must bloom at the same time for good fruit set
Early-spring flowering plants such as crocus: Draw bumblebees and bees during haskap's very early bloom, improving pollination
How to propagate
You can raise more honeyberry from cuttings or from seed, and it's helpful to know that only one of the two gives you a faithful copy of the plant you began with.
Stem cuttingsModerate
Softwood cuttings in early summer or hardwood cuttings taken during dormancy · About 4 to 8 weeks to root; transplant out the following season
Cuttings are the reliable way to keep a cultivar true to itself. Take softwood in early summer or hardwood while the plant rests through dormancy, dip the ends in rooting hormone to give yourself the best chance, and look for roots in about 4 to 8 weeks. Grow them along and set them out the following season.
SeedModerate
Sow after cold stratification in spring · Several years to first fruiting
Seed is really a breeder's route rather than a way to copy a bush you love. Cold-stratify it and sow in spring, but do know the seedlings turn out variable, won't match the parent, and take several years before their first fruit.
Myths
Every honeysuckle berry is poisonous, so honeyberries must be unsafe to eat.
It's true that many ornamental honeysuckles, like L. tatarica and L. maackii, bear mildly toxic, inedible berries, and that's where the fear takes root. Honeyberry, though, is L. caerulea, the species grown on purpose as a food crop. Its ripe blue fruit is non-toxic and enjoyed fresh, frozen, and in preserves.
Honeyberries want acidic soil the way blueberries do.
That's a blueberry rule, and it doesn't apply to haskap at all. Honeyberry takes a wide pH range and even thrives on chalky, calcareous ground up around 7.7 or higher, which makes it one of the most soil-forgiving berries you can put in.
One honeyberry plant on its own will give you a full crop.
Honeyberry simply can't fertilize its own flowers. It needs a second, unrelated cultivar blooming at the same time close by to cross-pollinate, or you'll end up with lovely blossom and next to no fruit.