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Sea buckthorn, lots of spikes, but lots of berries, too!

Sea buckthorn
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Very narrow, grey-green leaves drop in autumn to leave the branches studded with red-orange berries that hold on through winter, edible and pleasantly tangy. Sea buckthorn (Hippophae rhamnoides) also binds soil on unstable slopes and shrugs off sea spray. It is dioecious, so plant one male for every five or six females if you want fruit.

Sea buckthorn at a glance
Latin name Hippophae rhamnoides
Family Elaeagnaceae
Type shrubby tree
Foliage deciduous
Height 10 to 16 feet (3 to 5 m)
Exposure sunny
Soil light, well-drained, neutral to alkaline pH
Hardiness hardy
Blooming spring
Fruiting fall, winter

Meet Sea Buckthorn

Edible berries
Red-orange fruit stands out once leaves fall

Hippophae rhamnoides is a dioecious species, meaning there are male and female plants. To get fruits, it’s a good idea to plant one male for every 5 or 6 females.

Sea buckthorn foliage is very narrow with a grey-green color.

Fruit shows up in early fall and its red-orange color pops even more when leaves fall. These berries are edible, with a sweet and lovely  tangy flavor.

It’s often confused with firethorn due to similar phonetics and appearance, but they are indeed different shrubs.

Caution: Italian buckthorn, an unrelated shrub that unfortunately goes by a similar name, has toxic berries.

Sea buckthorn and its look-alikes

Two other shrubs are regularly mistaken for sea buckthorn, and one of them carries berries you must not eat. Check which shrub you actually have before picking anything.

Sea buckthorn and its look-alikes
Shrub Why it gets confused Berries
Sea buckthorn (Hippophae rhamnoides) The genuine article, thorny with red-orange fruit Edible, sweet and tangy
Firethorn Similar-sounding name and similar look A different shrub entirely
Italian buckthorn Shares a similar name but is unrelated Toxic — do not eat

When in doubt, the edible berries belong only to Hippophae rhamnoides.

  • Look at the leaf first: sea buckthorn is deciduous, with narrow, silvery grey-green foliage, though similar narrow silvery leaves occur in relatives like Russian olive, so also check the fruit and thorns.
  • Italian buckthorn carries no thorns at all.
  • Sea buckthorn fruit ripens to shades of yellow and orange and never turns black, so any shrub whose berries darken from red to black is a different plant.
  • On sea buckthorn the berries clasp the wood almost without stalks, whereas firethorn holds its fruit in stalked clusters standing clear of the branch.

Which sea buckthorn variety to choose

Because the shrub is dioecious, choosing a variety means choosing a sex as well as a berry: a single male will pollinate a group of five or six females. The table below sets out the named forms most often offered by nurseries and mail-order catalogues.

Which sea buckthorn variety to choose
Variety Male or female Berries Ripening Habit and use
Leikora Female Large, deep orange, heavy crop Mid to late autumn Vigorous, the standard fruiting form
Pollmix Male None Flowers in spring Upright, reliable pollinator for Leikora
Hergo Female Orange-red, firm Mid autumn Sturdy, holds fruit well on the branch
Askola Female Orange, juicy Early to mid autumn Vigorous and upright
Frugana Female Orange, loosely held Early autumn Easier picking, spreading habit

Planting sea buckthorn

Sea buckthorn, or argousier as we say in French, thrives in all soil types, as long as it’s lightweight and draining. If possible, place it in full sunlight year-round, but it’ll tolerate some shade.

For a fruitful harvest, plant one male for every 5 or 6 females. You’ll thank us later.

When to plant?

Drought-resistant and vigorous, sea buckthorn doesn’t mind whether you plant it in spring or autumn.

How to plant?

How to plant sea buckthorn
Dig a generously wide and deep planting hole
  • Dig a wide and deep planting hole. No need to measure, just make it spacious.
  • If your tree comes in a container, just remove it, free up some roots, and let it loose in its new home.
  • If you’ve got a bare root tree, give it a root dip before planting.
  • Plant a stake close to the trunk, minding those delicate roots.
  • Fill in the hole, pack the soil firmly. Put your back into it!
  • Connect the trunk to the stake with a figure “8” tie, knot between stake and tree to avoid any frictions.

Caring for your sea buckthorn

Pruning sea buckthorn
Pruning is optional, mainly shaping and dead wood

No need for extra pampering here. Only prune your sea buckthorn when you feel like it:

  • Formative pruning during initial growth years.
  • Getting rid of dead or dangerous branches. Safety first!
  • Raising the crown, or removing low branches that get in the way.

Propagation:

Create new sea buckthorn plants by layering, cutting (softwood in late summer or hardwood in winter) or sowing.

Diseases and pests:

Impressively hardy, Hippophae rhamnoides gives pests the cold shoulder and shows no sign of disease.

Using sea buckthorn for landscaping

With its ground-covering root system, sea buckthorn makes it its duty to hold together soil on unstable slopes. Salt and sea spray? No problem, which makes it a superstar for jazzing up a coastal garden.

Want to fully enjoy those bright red-orange fruits in winter? Pair your sea buckthorn with trees or shrubs boasting bright decorative wood, like a colorful bark dogwood (example: Cornus sericea), or yellow wood white willow (Salix alba).

  • Species that sucker freely from the roots can spread into neighbouring ground, so site such plants away from tidy borders, or sink a root barrier at planting time to contain them.
  • The branches are genuinely thorny, which makes a row of sea buckthorn an effective intruder-proof boundary, but set it back from paths, seats and play areas.
  • Wind-tolerant species are the ones planted in a shelterbelt’s outer row, where they take the brunt of the wind and screen the more tender plants growing behind them.

Fruit harvest and preparation

Sea buckthorn berry harvest
Shake branches over a cloth to beat thorns

Typically, you’d harvest sea buckthorn berries around mid-autumn, preferably after the first frost. Picking them isn’t exactly a walk in the park due to the tree’s thorns. But shaking the branches over a ground cloth, will let you collect these tough-to-reach fruits with ease.

After the harvest, feel free to enjoy the berries raw, or try them with yogurt or cereal. They also keep well in juice, syrup, jam, or even frozen.

Sea buckthorn bears fruit on the previous season’s growth, so a cut branch carries no further crop, though the pruned plant regrows shoots that can fruit in later years.


Images: Pixabay: Artoxana, Florian Pircher, D. Knimo, minka2507, Victoria

Written by Christophe Dutertre | With a formal degree in landscaping and an informal love of gardens, Christophe will introduce you to this passion we all share. Novelty, down-to-earth tips and environment-friendly techniques are marked on the map, so let's get going!

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