Goumi
Elaeagnus multiflora
also called cherry silverberry, gumi
A silver-leaved shrub that fixes its own nitrogen, tolerates dreadful ground, and hangs itself with small speckled scarlet berries in midsummer.
- Type
- Fruit · Perennial
- Botanical family
- Mixed / other
- Foliage color
- Silver and gray · Green
- Flower color
- Red
- Sunlight
- Full sun to part shade
- Watering
- Low
- Soil
- Almost any, including poor and dry
- Feeding
- Gentle all-organic
- USDA zones
- 4a–9b
- Frost tolerant
- Yes
- Plant out
- at the last spring frost
- First harvest
- 120 days after the last spring frost
- Harvest ends
- at the first fall frost
- Plant spacing
- 6 ft 7 in
- In-row spacing
- 5 ft 11 in
- Between rows
- 8 ft 2 in
- Square-foot density
- Not suited to SFG
- Root system
- Woody and fibrous
- Working depth
- 12–24 in
- Can reach
- 3 ft down where the soil allows
- Spread
- 12–16 ft across, about 1.5–2× the width of the plant
- Shallowest pot
- 20 in of soil
A shallow woody framework with the fine feeding roots in the leaf litter above it. Those feeders are mostly under the outer half of the canopy rather than against the stem, which is where water and feed should go.
Nodules on the roots host Frankia bacteria that fix nitrogen from the air, so a goumi feeds itself and its neighbours. Planted between fruit trees it is doing a job as well as cropping.
The habit is Goumi’s own; the figures are what that habit usually comes to at this size, not a measurement of this species. Roots follow the soil either way: a compacted pan, a high water table or heavy clay stops them well short of any of it, and deep open ground lets them go further.
- When
- From two or three years after planting, with the fruit ripening in midsummer, about 120 days after flowering.
- What to look for
- The berries have turned deep scarlet with silver speckles and come away with a light tug. Picked even slightly early they are astringent enough to be unpleasant.
- How to harvest
- Strip the berries off by hand into a bowl, or spread a sheet and shake the branches. They are soft, so pick into a shallow container.
- How often
- Every two or three days over the two-week season.
- Storing the crop
- A few days refrigerated. The seeds are large in proportion to the fruit, so most of the crop goes into jam, sauce or a fruit leather.
- Aphids Small sap-sucking insects — greenfly, blackfly — that cluster on soft new growth and excrete sticky honeydew. Squash by hand, hose off with water, and encourage ladybirds and lacewings.
- Birds Pigeons strip brassica leaves; other birds take fruit, buds, and seedlings. Netting fixed taut over hoops is the only reliable protection.
- Gray mold (botrytis) Fuzzy gray mold on flowers, fruit, and soft growth in cool, damp, still air. Remove affected parts promptly, thin congested growth, and ventilate under cover.
Beneficial predators that hunt this plant's pests — grow their favourite flowers nearby to recruit them. companion plant
- Aphid midge Aphidoletes aphidimyzaHunts Aphids
A tiny midge whose orange maggots paralyze aphids and drink them dry, twenty or more each. Sold as a greenhouse biological control and resident outdoors wherever there are small nectar flowers and an unsprayed aphid colony to find.
- Assassin bug ReduviidaeHunts Aphids
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.
- Big-eyed bug Geocoris spp.Hunts Aphids
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.
- Damsel bug NabidaeHunts Aphids
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 Aphids
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 Aphids
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.
- Green lacewing Chrysoperla carneaHunts Aphids
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.
- Hoverfly SyrphidaeHunts Aphids
Bee-mimicking flies whose legless larvae graze aphid colonies clean while the adults pollinate. A ribbon of shallow, nectar-rich flowers kept in bloom all season recruits wave after wave of them.
- Ladybird (lady beetle) CoccinellidaeHunts Aphids
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.
- Minute pirate bug Orius spp.Hunts Aphids
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 & TrichogrammaHunts Aphids
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.
- Praying mantis MantidaeHunts Aphids
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.
- Soldier beetle CantharidaeHunts Aphids
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.
- Spiders AraneaeHunts Aphids
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.
One of the very few nitrogen-fixing fruit shrubs, which is why permaculture plantings put it between fruit trees rather than in a row of its own.
Green-leaved fruit with red flowers, like this one.
The Cottage Garden Companion — the gardener's herbarium at cottagegardencompanion.com