Elaeagnus macrophylla Seeds | Broad-leaved Elaeagnus
LATIN NAME: Elaeagnus macrophylla
COMMON NAME: Broad-Leaved Elaeagnus
Plant Profile
The silver sheen is not dust but structure. The lower leaf surface is covered with peltate scales, minute stalked hairs whose round tops lie flat like shields, a feature shared across Elaeagnaceae. These scales reflect light, slow water loss, and help the plant cope with wind and salt spray on exposed coasts. On E. macrophylla the scales are dense enough that the leaf underside reads as metallic, and the contrast with the green upper face makes the plant easy to recognise even when it is not in flower.
The flowers open in autumn, small and tubular, silvery-white on the outside and often tinged inside, and unexpectedly fragrant for such a modest bloom. They are carried singly or in short clusters in the leaf axils, and the sweet scent draws insect visitors in the cooler months when little else is flowering. After the flowers the plant sets its small rounded fruits, which ripen to a silvery or reddish tone and carry a single large seed inside a mealy pulp.
Elaeagnus macrophylla is a classic shoreline plant of eastern Asia, native from Korea and Japan to the warm coasts and islands of eastern China. It grows on sea-facing slopes, in thickets and at woodland edges where salt, wind and thin soil would defeat many shrubs. That hardiness is no accident: like its relatives it is an actinorhizal plant, able to thrive on poor ground because of a partnership in its roots that other flowering shrubs lack.
Within its range the species is a useful coastal fixer and a hedgerow plant, valued where a tough, evergreen, salt-tolerant screen is needed. It is distinct from the thorny Elaeagnus angustifolia of drier inland regions and from the oil-bearing Elaeagnus mollis of central China, holding its own niche on the maritime fringe. Gardeners in mild regions grow it for the foliage and the autumn scent as much as for any fruit.
Its tolerance of salt-laden wind also makes it a useful hedge in coastal gardens, where few broad-leaved evergreens survive the exposure, and the same trait recommends it for stabilising loose, sandy ground along the shore.
Science & Biotechnology
The biotechnological interest in Elaeagnaceae is the root. Elaeagnus forms nodules inhabited by Frankia, a filamentous actinomycete that fixes atmospheric nitrogen into a form the plant can use. This symbiosis lets the shrub build soil fertility on bare, disturbed or saline sites, and it is why elaeagnus species are planted in dune stabilisation, mine reclamation and shelterbelts. Studying the nodule bacteria and their nitrogen contribution has been a steady line of work across the genus, including the broad-leaved species.
Uses & Benefits
The ripe fruits of E. macrophylla are edible, though mealy and astringent fresh, and in the genus they are more often used cooked or processed than eaten raw. The closely related silverberries are made into jams, sauces and wines where they grow, the tartness balancing the bland pulp, and the same treatment suits this species. The fruit is also bird food, and the shrub’s value to wildlife is part of its case as a coastal conservation planting.
The fruits of E. macrophylla are usually harvested after the first light frost, which softens the astringency and brings out a faint sweetness beneath the tart pulp. In the genus the fruits are commonly cooked with sugar or fermented, and the same approach suits this species, turning a mealy wild berry into a usable preserve. The single large seed inside each fruit is spat out or strained, and the remaining pulp is the part worth keeping. Beyond the kitchen the shrub is a dependable wildlife plant, its fruit taken by birds and its dense evergreen cover used by small nesting birds through the winter.
Growing from Seed
The first thing you notice on Elaeagnus macrophylla is the silver. The leaves are large for an elaeagnus, oval to roundish, and their margins are gently wavy rather than straight or toothed. The upper surface is a dull green, but the underside is coated in tiny silvery or brownish scales that catch the light and give the whole shrub a frosted look. It is an evergreen, many-branched plant that can spread three metres or more, and the broad leaves are what separate it from the narrower-leaved members of the genus.
The single large seed sits in a hard coat and is best sown fresh after the fruit is cleaned, in a deep, well-drained, sandy medium kept moist and cool. A period of cold before warmth helps the seed break dormancy, so an outdoor winter sowing or a chilled tray gives the best emergence. Thin the seedlings so each has room to branch, and move a sturdy young plant to its coastal or hedgerow site when it has several true leaves and a firm root crown. Plant where wind and sun are not shielded entirely, since the shrub is built for exposure.
Our Take
Broad-leaved elaeagnus is the shrub to choose when you want a silver-leaved, salt-tolerant screen that also feeds the soil. It pairs well with other Elaeagnus such as Elaeagnus conferta, the Russian olive and the oil-bearing elaeagnus. For fruit in quantity, buy preserved silverberry from a specialist fruit supplier rather than stripping a young hedge.
Related Reading
Gardeners who grow Broad-Leaved Elaeagnus often pair it with these related subjects: