Egyptian Walking Onions: The Perennial Onion That Plants Itself
Egyptian walking onions are the only onion you plant once. Instead of flowering, each stalk grows a cluster of small bulbs in the air, called topsets, then bends under their weight and plants them a step away from the parent. Plant a few topsets 2 to 3 cm deep this autumn and you have a patch that feeds you spring onions, cooking greens and pickling bulbs for years, with no sowing ever again.
Short on time? Our Egyptian walking onion topsets are grown at the Earthling Plants nursery in Co. Wicklow and ship ready to plant.
A Cottage Garden Heirloom
Walking onions are the kind of plant that used to travel over garden fences rather than through catalogues: a clump dug up for a neighbour, a handful of topsets in a paper bag, passed along for generations because the plant simply never needed replacing. Botanically it is a cross between the common onion and the Welsh onion, and the "Egyptian" in the name is old marketing nobody can verify. What is verifiable is the behaviour: a perennial onion that propagates itself, in your garden, on its own schedule.
The deeper appeal is what it does to the lean months. February and March are the hungry gap, when the stored onions are sprouting, the new sowings are weeks away and the veg garden gives nothing. A walking onion patch stands green right through it, handing you fresh onion flavour in the exact weeks the annual system fails. One unkillable perennial patch also carries no germination failures, no seedling losses and no slug disasters, which is more than any spring-sown onion bed can say.
In the Kitchen
Treat the green leaves as spring onions for eggs, salads and stir fries, available most of the year. The topsets are the party piece: already bite-sized, they pickle whole into sharp little cocktail onions, or go into stews and roasting trays without any peeling. The underground bulbs eat like strong shallots, and dividing a crowded clump in autumn gives you a basketful. Nothing on the plant is wasted.
Walking Onion Quick Facts
Latin name: Allium x proliferum, a cross of common onion and Welsh onion
Plant: topsets in August to October, or early spring
Depth and spacing: 2 to 3 cm deep, 25 to 30 cm apart
Position: full sun, any reasonable soil with drainage
Harvest: greens from spring to autumn, topsets in late summer, divisions any time
Hardiness: fully hardy, evergreen in mild Irish winters
Lifespan: indefinite; the patch renews itself
Step 1: Plant the Topsets
Push each topset into weeded ground, pointy end up, 2 to 3 cm deep and 25 to 30 cm apart. Autumn planting gives you green shoots within weeks that stand right through an Irish winter. They are not fussy about soil, but like every allium they sulk in winter waterlogging, so pick a spot that drains.
Step 2: Year One Is for Settling In
First-year plants build a clump of hollow green leaves and divide at the base, but usually produce few or no topsets. Pick leaves lightly, the way you would chives, and let the plants keep most of their energy. By the second spring the clumps are strong enough to do the famous trick.
Step 3: The Walk
From the second summer, each mature stem grows a cluster of topsets at a metre's height. As they fatten, the stalk arches over and pins them to the ground, where they root and become next year's plants, a step away from the parent. Left alone, the patch genuinely travels across a bed over the years. If you prefer order, snap the topsets off before they land and plant them where you want them, or eat them.
Step 4: Harvest Without Killing the Patch
A walking onion patch gives four harvests. Green leaves, cut like spring onions from spring to autumn. Whole young plants, pulled where the patch is crowded. Topsets, picked in late summer for pickling, cooking or replanting. And the underground bulbs, dug from mature clumps; they are small, strong-flavoured shallot types. The only rule is to leave a portion of every clump in the ground, and the patch carries on as if nothing happened.
Step 5: Keep It Productive
Every third year or so, lift and divide the oldest clumps in autumn, replant the best, and eat the rest. Top the bed with compost each spring. That is the entire maintenance schedule, which is the point of the plant.
Where to Put Them
Walking onions belong in permanent ground, not the annual rotation. A sunny edge of a perennial bed, the end of a herb patch, or the strip along a path all suit them, anywhere they can hold territory for years without being dug through. They make a good understory neighbour for fruit bushes too, where their scent is thought to help confuse the pests that hunt by smell, the same logic as planting chives under roses.
Give the patch a defined edge if tidiness matters to you, because the walk is real. The simplest arrangement is a dedicated strip a metre wide: wide enough for the patch to wander within, narrow enough to pick across without stepping on it.
Troubleshooting Walking Onions
No topsets in year one: normal; they start in year two
Rotting over winter: waterlogged ground; replant on a ridge or in a raised bed
Crowded, thin stems: the clumps need dividing; lift, split and replant
Allium pests: onion fly and allium leaf miner can visit as with any onion, though established perennial clumps usually shrug off damage that would flatten seedlings
FAQ: Egyptian Walking Onions
Do walking onions really walk? Yes, about a step a year. The top-heavy stalks bend over and the aerial bulbils root where they touch down, typically 30 to 60 cm from the parent. Over a few summers the patch visibly migrates across the bed, which is either a feature or a chore depending on your tidiness.
Can you eat every part of a walking onion? Everything: the green leaves, the aerial topsets and the underground bulbs. The greens are mild, the topsets and bulbs pack much more punch than their size suggests. The topsets pickle brilliantly because they are already bite-sized.
Are Egyptian walking onions hardy in Ireland? Completely. They stay green through most Irish winters and take hard frost without protection, which makes them one of the few fresh onion harvests available in February when the veg garden is otherwise empty.
How fast do they spread? Steadily rather than invasively. Each plant drops its topsets within arm's reach, and nothing travels by root, so the patch is easy to contain by picking topsets before they touch down.
One Planting, Years of Onions
A couple of rows of topsets planted this autumn becomes a permanent onion corner by next summer, and it pairs naturally with the rest of a perennial vegetable bed. If you still want big storage onions for the kitchen shelf, our onion growing guide covers those; the walking onions are what feed you in the gaps.
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