Viburnum
Viburnum
Broad enough a family that some flower in winter and take deep shade — but the beetle finds every one of them.
Spacing & sowing
- Plant spacing
- 8 ft 2 in
- In-row spacing
- 8 ft 2 in
- Between rows
- 10 ft 3 in
- Square-foot density
- Not suited to SFG
Growing
- Type
- Shrub · Perennial
- Botanical family
- Mixed / other
- Sunlight
- Sun through to part shade; the winter-flowering kinds put up with more shade.
- Watering
- Regular water while young; forgiving once it has settled.
- Feeding
- A compost mulch in spring; it rarely asks for more.
- Frost tolerant
- Yes
- Flowering
- May
- Pruning
- Prune once flowering is done, taking out the oldest stems.
Through the year
- Mar–May Bud Break
- May–Jul Flowering
- Jul–Oct Growing
- Oct–Dec Leaf Fall
- Jan–Mar Leaf Fall
Companions
Hellebores, Ferns, Sarcococca, Cyclamen
Pests & problems
- Caterpillars Viburnum beetle, far and away its worst trouble
- Whitefly Tiny white moth-like insects that rise in clouds from leaf undersides, weakening plants and leaving honeydew. Hang yellow sticky traps and encourage or introduce parasitic wasps.
- Leaf spot Brown or black spots that spread and merge in wet weather, sometimes with yellow halos. Pick off affected leaves, clear fallen ones, and water at the base.
Garden allies
Beneficial predators that hunt this plant's pests — grow their favourite flowers nearby to recruit them. companion plant
- Big-eyed bug Geocoris spp.
A stubby 3 mm bug with enormous wrap-around eyes, working the soil surface and the low foliage for aphids, mites, thrips and insect eggs. It is the main natural check on chinch bugs in a lawn and it is killed outright by insecticide.
- Green lacewing Chrysoperla carnea
Its bristly larvae — "aphid lions" — impale aphids, mealybugs, thrips, and mite colonies, eating hundreds a week. Adults feed on nectar and pollen from small open flowers and overwinter in hollow stems left standing.
- Minute pirate bug Orius spp.
A pinhead-sized true bug that is the best natural check on thrips, and happily spears aphids, mites, and insect eggs too. It needs pollen when prey is scarce, so keep something flowering nearby.
- Parasitic wasps Braconidae & Trichogramma
Tiny, stingless wasps that lay eggs in or on caterpillars, aphids, and moth eggs — the white cocoons riding a hornworm are their calling card, so leave that caterpillar be. Umbel flowers with shallow nectar keep the adults fuelled.
- Spiders Araneae
Webs, ambushes, and night patrols make spiders the garden’s steadiest generalist predators, taking whatever flies or crawls past. Mulch, ground cover, and undisturbed corners keep the population dense.
- Assassin bug ReduviidaeHunts Caterpillars
A patient ambusher with a curved beak it drives into whatever it catches — caterpillars, beetles, bugs, and the occasional bee, so count it a generalist rather than a specialist. It will jab a careless finger too, so admire it and leave it be.
- Bats ChiropteraHunts Caterpillars
A single bat takes hundreds of moths and mosquitoes in a night, and the moths are the parents of your cutworms, corn earworms and hornworms. Put up a bat box on a warm south wall, leave a night-scented corner unlit, and never spray after dark.
- Damsel bug NabidaeHunts Caterpillars
A slender, mantis-armed bug that grabs aphids, small caterpillars, and thrips in low crops and meadowy edges. Leave a strip of unmown grasses and flowers for it to overwinter in.
- Dragonflies & damselflies OdonataHunts Whitefly
Aerial hunters that take mosquitoes, midges and small flies on the wing all day, and whose larvae spend a year or more clearing the same insects from the water. A pond with planted margins and no fish is the way to have them.
- Garden birds PasseriformesHunts Caterpillars
Both things are true: birds strip your currants and a brood of blue tits takes several thousand caterpillars out of one fruit tree in a fortnight. Net what you must and welcome them everywhere else — a nest box near the apples is worth more than a spray.
- Hedgehog Erinaceus europaeusHunts Caterpillars
A European animal, and worth saying so plainly: there are no hedgehogs in North America, and the ally that does the same night shift here is the toad, the opossum or the ground beetle. Where they do occur, cut a gap in the fence and skip the pellets.
- Ladybird (lady beetle) CoccinellidaeHunts Whitefly
The gardener’s favorite ally: adults and their alligator-shaped larvae each eat thousands of aphids, plus scale, mealybugs, and other soft-bodied sap-suckers. Grow flat, open flowers for the adults and never spray a colony that ladybird larvae are already working.
- Praying mantis MantidaeHunts Caterpillars
A sit-and-wait ambusher that snatches caterpillars, beetles, and anything else that wanders close — friend and foe alike, so count it a mixed blessing. Tall, structured plantings give it perches and egg-case anchors.
- Snakes & lizards Colubridae & PhrynosomatidaeHunts Caterpillars
A garter snake works the beds for slugs and voles and a fence lizard clears grasshoppers off a sunny wall. Almost every snake a gardener meets is harmless and useful; give them a log pile, a warm flat stone and a bit of cover and they stay.
- Soldier beetle CantharidaeHunts Caterpillars
Soft-winged beetles seen mating on flower heads in high summer; adults and larvae both take aphids and soft grubs. Open composite flowers are their landing pads and hunting grounds.
- Spined soldier bug Podisus maculiventrisHunts Caterpillars
A predatory stink bug — same shield outline as the pest, but with a sharp spine at each shoulder and a beak it uses to spear caterpillars and beetle grubs. Learn the spines before you squash a shield bug, because this one is on your side.
- Tachinid fly TachinidaeHunts Caterpillars
Bristly, house-fly-lookalike parasitoids that lay eggs on caterpillars, beetle grubs, and earwigs — the maggot consumes the host from within. Adults sip nectar from shallow umbels and daisies.
The Cottage Garden Companion — the gardener's herbarium at cottagegardencompanion.com