Veg Growers Tend To Focus On The Traditional, But Here Are 60 Unusual Garden Edibles That Often Get Missed. They Deserve To Be Growing In More Gardens & Allotments!

Unusual Perennial & Kitchen Garden Edibles. How To Sterilise Garden Soil

Cultivating a truly resilient kitchen garden means looking beyond the common allotment staples. Britain’s temperate climate, with its damp winters and unpredictable summers, actually favours a surprising diversity of perennial and heritage edibles—plants that return year after year, offering long-term harvests with minimal intervention.

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The Perennial & Unusual Kitchen Garden

A comprehensive British guide to resilient, historically significant crops—from Andean staples to Victorian delicacies.

Oca

Oxalis tuberosa

Botanical & Historical Profile

History: Andean staple introduced to Britain in the 1830s. It failed commercially as tubers only form after the autumn equinox, often coinciding with UK frosts.

Cultivation: Plant in May; earth up stems. Use fleece in October to extend growth.

Use: Raw for a lemony crunch; roasted for a nutty, creamy texture.

Yacon

Smallanthus sonchifolius

Botanical & Historical Profile

History: The “Inca Red Carrot,” prized in forest gardening. A sunflower relative with a low glycaemic index.

Cultivation: Start rhizomes in March. Harvest after the first frost blackens foliage to concentrate sugars.

Use: Pear-watermelon hybrid taste. Remains crisp when stir-fried.

Skirret

Sium sisarum

Botanical & Historical Profile

History: Tudor staple and premier European root before the potato. Favoured by Emperor Tiberius.

Cultivation: Thrives in damp, heavy British soils. Fully winter-hardy.

Use: Intensely sweet. Remove woody core after boiling; excellent sautéed in butter.

Salsify

Tragopogon porrifolius

Botanical & Historical Profile

History: Victorian “Vegetable Oyster,” grown as a winter delicacy in grand walled gardens.

Cultivation: Requires deep, stone-free soil. Frost improves flavour by converting starch to sugar.

Use: Subtle briny aroma. Boil or fry as fritters.

Scorzonera

Scorzonera hispanica

Botanical & Historical Profile

History: “Black Salsify.” A true perennial root that improves with age; once thought to cure snakebites.

Cultivation: Boil briefly to slip off the tough black skin easily.

Use: Flavour similar to globe artichoke hearts. Excellent in a creamy gratin.

Chinese Artichoke

Stachys affinis

Botanical & Historical Profile

History: Mint family member introduced to the UK via France in the Victorian era.

Cultivation: Resilient and can be invasive. Harvest from October through winter.

Use: No peeling; scrub and sauté briefly to maintain its signature crunch.

Tiger Nuts

Cyperus esculentus

Botanical & Historical Profile

History: Ancient Egyptian staple used for Spanish Horchata de Chufa. Safe for nut allergy sufferers.

Cultivation: Treat as annual in UK. Needs a warm, south-facing border.

Use: Sweet and hard; usually soaked and blended into milk.

Mangelwurzel

Beta vulgaris

Botanical & Historical Profile

History: 18th-century fodder and “Dig for Victory” survival food. Central to West Country folk traditions.

Cultivation: Needs heavy manuring. Harvest at grapefruit size to avoid woodiness.

Use: Sweeter than beetroot; excellent in traditional country wine.

Sweet Potato

Ipomoea batatas

Botanical & Historical Profile

History: A Tudor luxury “exotic” that preceded the common potato in English popularity.

Cultivation: Requires heat (20°C+). Best in a greenhouse or polytunnel.

Use: Roast or mash. Young shoots are also excellent stir-fried.

Hamburg Parsley

Petroselinum crispum tuberosum

Botanical & Historical Profile

History: Central European staple popular in 18th-century Britain for its dual-purpose root and leaf.

Cultivation: Reliable and easy; roots sweeten significantly after a hard UK frost.

Use: Parsnip-parsley hybrid taste. Roast with honey or grate raw into remoulades.

Dahlia Tubers

Dahlia sp.

Botanical & Historical Profile

History: Aztec food crop originally brought to Europe to rival the potato.

Cultivation: Harvest younger “finger” tubers after frost blackens foliage. Avoid pesticide-treated plants.

Use: Tastes like water chestnut. Excellent at absorbing spices in curries.

Jerusalem Artichoke

Helianthus tuberosus

Botanical & Historical Profile

History: North American sunflower variety; a vital WWII “Dig for Victory” crop.

Cultivation: Highly invasive; survives -20°C. Makes a great 3m edible windbreak.

Use: Best roasted or in smoky soups. High in inulin (diabetic-friendly).

Egyptian Walking Onion

Allium × proliferum

Botanical & Historical Profile

History: Permanent cottage garden fixture that “walks” across plots as top bulbs root.

Cultivation: Exceptionally hardy. Provides spring greens, summer bulbils, and autumn base bulbs.

Use: Topsets for pickling; base bulbs for pungent, slow-cooked stews.

Babington’s Leek

Allium ampeloprasum var. babingtonii

Botanical & Historical Profile

History: Rare native British perennial. Adapted to coastal conditions; likely a monastic relic.

Cultivation: Cut at ground level; regrows annually. Highly pest-resistant.

Use: Mild garlic-leek flavour. Bulbils used as “garlic pearls.”

Caucasian Spinach

Hablitzia tamnoides

Botanical & Historical Profile

History: 19th-century ornamental rediscover as a premier perennial spinach.

Botanical: Climbing perennial (up to 4m). Thrives in deep shade.

Cultivation: Requires a sturdy trellis and cold stratification for seeds.

Use: Spring shoots like purple asparagus. Leaves are tender and low in oxalic acid.

Chop Suey Greens

Glebionis coronaria

Botanical & Historical Profile

History: Edible Chrysanthemum. Native to Mediterranean; culinary potential perfected in East Asia.

Cultivation: Fast-growing (4 weeks) in UK spring/autumn. Edible yellow flowers.

Use: Resinous flavour; signature ingredient in Japanese Sukiyaki.

Fat Hen

Chenopodium album

Botanical & Historical Profile

History: Iron Age staple in Britain. More nutritious than modern shop-bought spinach.

Cultivation: Highly productive “volunteer” crop; drought-tolerant and thrives in poor soil.

Use: Heartier, earthier than spinach. Holds texture well in curries.

Flower Sprouts

Kalettes

Botanical & Historical Profile

History: Modern British non-GMO success (2010), crossing Brussels sprouts and kale.

Cultivation: Winter-hardy. Frost triggers conversion of starches into sugars.

Use: Roast or stir-fry to caramelise frilly edges. Lacks heavy cabbage smell.

French Sorrel

Rumex scutatus

Botanical & Historical Profile

History: Cornerstone of French cuisine and Victorian garden essential.

Cultivation: Hardy perennial (March–Nov). “Cut and come again” growth.

Use: Melt-in-the-pan acidity perfect for balancing salmon or mackerel.

Good King Henry

Blitum bonus-henricus

Botanical & Historical Profile

History: “Lincolnshire Spinach.” Vital 19th-century survival potherb.

Botanical: Perennial producing “Poor Man’s Asparagus” flower spikes.

Use: Must be cooked. Rich, substantial flavour; best sautéed with nutmeg.

Kailan

Brassica oleracea var. alboglabra

Botanical & Historical Profile

History: Chinese Broccoli; parent of modern Tenderstem. Staple of Cantonese cooking.

Cultivation: Best in spring/autumn in UK; heat causes woody bolting.

Use: Sweet stem with sophisticated bitter edge; pairs well with ginger.

Land Cress

Barbarea verna

Botanical & Historical Profile

History: Victorian winter salad crop that survives harsh frosts.

Cultivation: Thrives in damp, shady corners; self-seeds prolifically.

Use: Potent peppery kick. Classic in egg and cress sandwiches.

Miner’s Lettuce

Claytonia perfoliata

Botanical & Historical Profile

History: 1849 Gold Rush staple; high in Vitamin C. Naturalised in the UK since 1790.

Cultivation: Ultimate winter victory veg; grows steadily throughout the British winter.

Use: Mild, succulent, and watery crunch. Best eaten raw.

New Zealand Spinach

Tetragonia tetragonioides

Botanical & Historical Profile

History: Discovered by Sir Joseph Banks (1770); first Southern Hemisphere vegetable at Kew.

Cultivation: Heat-tolerant and bolt-resistant. Sprawling plant that suppresses weeds.

Use: Mild taste. Blanch briefly before sautéing; holds volume well.

Nine Star Perennial Broccoli

Brassica oleracea

Botanical & Historical Profile

History: Legendary 1920s heirloom from Cambridgeshire. Saved by heritage enthusiasts.

Cultivation: Short-lived perennial (5–7 years). Harvest all heads before they flower to avoid plant death.

Use: Sweeter version of cauliflower. Fills the spring “hungry gap.”

Red Orach

Atriplex hortensis

Botanical & Historical Profile

History: Mountain Spinach; primary European green during the Middle Ages.

Cultivation: Bolt-resistant and handles poor, alkaline soils. Self-sows reliably.

Use: Salty, mineral-rich flavour. Young leaves add a dramatic purple punch to salads.

Sea Kale

Crambe maritima

Botanical & Historical Profile

History: High-status Victorian luxury. Prince Regent George IV had it grown in Brighton.

Cultivation: Force ivory-white shoots in darkness using special pots in March.

Use: Gourmet delicacy served with hollandaise. Nutty asparagus-cauliflower flavour.

Shetland Kale

Brassica oleracea

Botanical & Historical Profile

History: Oldest known UK kale landrace (pre-1600s). Central to Atlantic survival.

Cultivation: Most wind-tolerant vegetable; thrives in salt-blasted exposed spots.

Use: Substantial texture; tender when slow-cooked in traditional stews.

Taunton Deane Kale

Perennial Tree Kale

Botanical & Historical Profile

History: Heirloom Somerset “Tree Kale.” Sterile clone propagated by cuttings for hundreds of years.

Cultivation: Grows up to 2.5m. Perpetual harvest—one plant feeds a household for a decade.

Use: Sweeter and tenderer than modern supermarket kale, especially after frost.

Turkish Rocket

Bunias orientalis

Botanical & Historical Profile

History: Native to the Caucasus; a “dynamic accumulator” that mines deep subsoil nutrients.

Botanical: Indestructible perennial with a 1m taproot. Drought-proof.

Use: Young flower buds harvested in spring like “mini-broccoli.” Nutty, spicy flavour.

Amaranth

Amaranthus sp.

Botanical & Historical Profile

History: “Golden Grain of the Aztecs.” Sacred crop banned by conquistadors. High-protein pseudocereal.

Cultivation: Half-hardy annual. Requires a sunny spot; seeds turn dry and “crispy” in late September.

Use: Leaves used like spinach (Callaloo); seeds popped like popcorn or ground into flour.

Asparagus Pea

Lotus tetragonolobus

Botanical & Historical Profile

History: 18th-century curiosity with crimson flowers and distinctively “winged,” square pods.

Cultivation: Notoriously temperamental; dislikes moving. Sow directly in late May in full sun.

Use: Harvest at 2.5cm or they become woody. Tastes reminiscent of asparagus when steamed.

Carlin Peas

Pisum sativum var. arvense

Botanical & Historical Profile

History: N. England heritage gem (“Black Badgers”). Saved coastal communities from famine during the Civil War.

Cultivation: Drying peas that reach 2m; robust climbers with beautiful bi-coloured flowers.

Use: Firm, “parched” texture with chestnut flavour. Traditionally served with vinegar and salt.

Chickpeas

Cicer arietinum

Botanical & Historical Profile

History: Synonymous with Indian cuisine; historically “impossible” in the UK until new hardy varieties arrived.

Cultivation: Needs the hottest, driest spot (or polytunnel). Glandular hairs deter common pests.

Use: “Green” chickpeas harvested fresh are sweet and creamy like edamame.

Edamame / Soya Bean

Glycine max

Botanical & Historical Profile

History: Japanese “stem bean” tradition. High-protein legume now viable in UK gardens.

Cultivation: Start indoors in May. Protect from pigeons and select “early” varieties for northern latitudes.

Use: Boil pods in salted water for 5 minutes. Buttery, nutty, and highly addictive.

Fava Beans

Vicia faba

Botanical & Historical Profile

History: The original European Broad Bean. Staple protein for the British peasantry for a millennium.

Cultivation: Sown in Nov to overwinter. Excellent nitrogen-fixer used as green manure.

Use: Base for Ful Medames; local sustainable alternative to chickpeas for “British Falafel.”

Lablab Beans

Lablab purpureus

Botanical & Historical Profile

History: “Hyacinth Bean.” Victorian glasshouse climber with striking electric-purple pods.

Warning: Mature dried seeds are toxic unless boiled extensively. Eat only young green pods.

Use: “Beany” flavour with a hint of bitterness; excellent in spicy curries.

Quinoa

Chenopodium quinoa

Botanical & Historical Profile

History: Inca “Mother Grain.” Close relative of native Fat Hen; grows exceptionally well in UK climate.

Botanical: Pseudocereal coated in bitter saponins (must be washed off before eating).

Use: Light, fluffy, nutty grain; young leaves also make an excellent spinach substitute.

Quinoa – French (Andean)

Chenopodium quinoa

Botanical & Historical Profile

History: Cultivars adapted for European day-lengths in the 1990s. More predictable for UK gardeners.

Botanical: Often “low-saponin” (sweet) varieties requiring less washing. Resists “lodging” in wind.

Use: Identical to standard Quinoa; preferred for a cleaner, less bitter finish.

Alpine Strawberry

Fragaria vesca

Botanical & Historical Profile

History: Wild strawberry of British woodlands. Sold in “pottle” baskets in Medieval and Tudor periods.

Botanical: “Everbearing” (June–Oct). Intensely perfumed fruit much smaller than garden varieties.

Use: Eat fresh and warm from the sun. Rare in shops as they do not travel well.

Aronia / Chokeberry

Aronia melanocarpa

Botanical & Historical Profile

History: N. American native. Rich source of anthocyanins (antioxidants)—higher than blueberries.

Cultivation: Tough deciduous shrub with fiery red autumn foliage. Entirely frost-hardy (-30°C).

Use: Magnificant ink-red jam or juice once cooked to mellow astringency.

Autumn Raspberry

Rubus idaeus

Botanical & Historical Profile

History: “Primocane” varieties bred to fruit on current season’s growth, extending harvest into Oct.

Cultivation: Simple pruning—cut every cane to ground level in Feb. No complex wire supports needed.

Use: Avoids “raspberry beetle” larvae; perfect for late-season fresh eating.

Chilean Guava

Ugni molinae

Botanical & Historical Profile

History: Queen Victoria personal favourite; aroma of strawberry, pineapple, and bubblegum.

Cultivation: Hardy to -10°C in sheltered spots. Requires acidic (ericaceous) soil.

Use: Famous for “Ugni Jam”; leaves can also be dried for tea.

Chokecherry

Prunus virginiana

Botanical & Historical Profile

History: North American wild cherry; used by Great Plains tribes in “pemmican.”

Cultivation: Extremely hardy; often used as an edible windbreak. Susceptible to black knot fungus.

Use: Too astringent raw; excellent for jellies and wine once sweetened.

I’d love to know how many of these Unusual Perennial & Kitchen Garden Edibles you are growing. Which is your favourite unusual vegetable Post your answers in the comments section below.

Tag: Unusual Perennial & Kitchen Garden Edibles

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