Edible Perennial Plant Guide

Plant crowns 18 inches apart in a trench 6–8 inches deep, in full sun with rich, well-drained soil. Top-dress with compost annually. Patience is key — do not harvest for the first two years while roots establish. By year 3, a mature crown will produce for 20+ years.

Harvest spears in spring when 6–8 inches tall by snapping or cutting at ground level. Harvest window is 4–6 weeks. Stop when spears become thin (pencil-width), allowing the remainder to fern out and feed the crown for next year.

In late autumn, allow the ferns to yellow and die back fully before cutting to ground level. Mulch crowns with 4 inches of straw or compost. In BC's Shuswap region, this protection is especially valuable during hard freeze events.

Steam lightly and finish with butter and lemon. Roast with olive oil and sea salt. Add raw shavings to salads. Pickle young tips in a light brine. Blend into asparagus soup with leek and potato.

Plant tubers 4–6 inches deep and 12–18 inches apart in spring. Highly vigorous — a single tuber will spread significantly. Designate a permanent bed with a physical root barrier or harvest all tubers thoroughly each year to contain spread. Tolerates poor soils.

Dig tubers after the first frost in autumn when plants die back. The cold sweetens the tubers. Harvest only what you need through winter, leaving the rest in the ground — they store best in situ. Leave some tubers to re-sprout in spring.

Plants die back naturally. In harsh winters, mulch the bed to prevent deep freezing and keep tubers accessible for winter harvest. No cutting or tidying needed until spring growth begins.

Roast whole until caramelized. Slice thin and eat raw in salads. Make into a smooth, nutty soup. Ferment as a prebiotic-rich vegetable. Note: inulin content can cause digestive discomfort — introduce gradually and cook thoroughly.

Direct sow or transplant in spring in a permanent position with moist, fertile soil and partial to full sun. Plants reach 5–6 feet tall — place at the back of a guild. One plant is typically sufficient for a household. Extremely long-lived when well-sited.

Begin harvesting leaves and stems in the plant's second year. Cut outer stems as needed from spring through summer. Leaves are most flavourful before flowering. Seeds can be harvested when ripe in late summer. Roots of mature plants can be harvested in autumn.

The plant dies back to the ground completely. Cut dead stalks in late autumn. The crown is extremely hardy — no additional protection needed in Zone 5–6. Fresh growth emerges reliably in very early spring, often before snow has fully cleared.

Use leaves as a celery substitute — stronger and more complex. Add to stocks, soups, and stews. Seeds are a spice for breads, cheese, and root vegetable dishes. Hollow stems can be used as drinking straws. Young spring leaves are excellent in green salads.

Plant root cuttings or divisions 3 feet apart in a permanent location — comfrey is very difficult to eradicate once established. Full sun to partial shade. Prefers moist soil but tolerates most conditions. Bocking 14 (sterile hybrid) is the preferred variety to prevent self-seeding.

Cut the entire plant to 2 inches above the ground 3–5 times per season. Harvest begins in spring once the plant reaches about 2 feet. Young spring leaves are the most tender and edible; older leaves are better used as mulch or liquid fertilizer.

Dies back fully in autumn. Cut remaining stalks to ground level and use as mulch. Crown is completely hardy. The deep taproot — which may extend 6 feet — continues mineral-cycling activity even during mild winters.

Young spring leaves only — older leaves contain pyrrolizidine alkaloids, best avoided in large quantities. Dip young leaves in batter and fry as fritters. Add sparingly to smoothies. Primarily valued as a garden plant (mulch, liquid feed, pollinator forage) rather than a staple food crop.

Sow seed directly in spring or plant divisions. Grows in most soils in sun or partial shade. Establish in the herbaceous layer of a guild or in Zone 1 for easy access. Divide clumps every 2–3 years to maintain vigour. Remove flower stalks promptly to extend the harvest season.

Pick outer leaves throughout the growing season from the plant's first year. Harvest is possible from very early spring through late autumn — one of the longest-producing edible perennials. Leaves become more intensely sour through summer; younger leaves are milder.

Semi-evergreen — leaves persist under snow in mild winters. The crown is fully hardy. In harsh winters, the plant may die back to a basal rosette. No protection needed. Cut back dead or exhausted foliage and it will flush again in spring.

The sharp, lemony flavour is its signature. Blend into a classic French sorrel soup with cream. Wilt briefly into scrambled eggs. Chop fresh into grain salads and potato dishes. Make into a sauce for fish. Use raw as a salad base — balance the acidity with mild greens.

Sow seed in spring or plant divisions in a permanent, fertile spot with partial shade tolerated. Often called the "perennial spinach" — it occupies a similar niche. Slow to establish from seed; plant out second-year transplants for best results. Self-seeds modestly once settled.

Pick young leaves and shoot tips from the second year onward, throughout spring and early summer. Flower buds can be eaten like broccoli. Harvest lightly in the first year to encourage root development. Leaves become more bitter through summer; early spring harvests are the best.

Dies back fully in autumn. Cut back dead growth. Extremely hardy crown — no protection required. One of the earliest plants to emerge in spring, often alongside sorrel, providing green food when little else is available.

Substitute for spinach in any cooked dish — wilts down significantly. Add to quiches, frittatas, and pasta. Steam lightly and serve with butter. Young leaves are acceptable raw in small amounts. Flower buds steamed briefly make an excellent side vegetable.

Plant crowns in autumn or early spring, 3–4 feet apart, in deep, fertile, well-drained soil with full sun. Mulch annually with well-rotted manure. Divide every 5–8 years when productivity declines. Thrives in BC's Shuswap climate — cold winters actually improve the following year's crop.

Do not harvest in the first year. In year 2, take only a few stalks. From year 3, harvest freely by grasping the base of each stalk and pulling with a gentle twist. Always leave at least 4–5 stalks per plant. Stop harvesting by midsummer to let the plant store energy. Never eat the leaves — they are toxic.

Cut back dead foliage in late autumn. Top-dress with compost or aged manure — this is the single most important maintenance task for a productive rhubarb bed. The crown is fully dormant and hardy through BC winters. Crowns can be forced under pots in late winter for early pale stems.

Classic in crumbles and pies paired with strawberry. Make into compote for breakfast or with roasted meats. Brew rhubarb wine or shrub (drinking vinegar). Ferment stalks lacto-style. Make rhubarb jam. The high acidity means it pairs beautifully with ginger, vanilla, and orange.

Plant bulblets (the topsets) 4–6 inches apart in well-drained soil in full sun. They will "walk" across the garden as the top-heavy seed heads bend and root where they touch — an extremely low-maintenance, self-perpetuating crop. Thrives in Zones 3–9. Drought tolerant once established.

Green shoots can be cut like scallions throughout the growing season. Topsets are harvested in late summer when the plant bends under their weight. Underground bulbs can be harvested in autumn. The plant provides onion flavour year-round, including very early spring when little else is available.

The plant is fully hardy and semi-evergreen. Underground bulbs remain harvestable through winter in mild conditions. Topsets left on the plant will overwinter and plant themselves in spring. No protection or attention needed.

Use green shoots as scallions — mild and sweet. Topsets are small but intensely flavoured — pickle them, add to stir-fries, or roast whole. Underground bulbs function as shallot-like additions to any savoury dish. Leaves can be dried for later use.

Sow seed in autumn (requires cold stratification) or plant root cuttings in spring. Full sun and excellent drainage are essential — sea kale naturally grows on shingle beaches. Extremely long-lived (20+ years) once established. Give plants 3 feet of space. Avoid waterlogged soils.

In the third year, force early growth by placing a pot or cloche over the crown in late winter to exclude light. Harvest the pale, nutty, blanched shoots in 3–4 weeks. Forced shoots are among the finest spring vegetables. Unblanched leaves and young shoots can also be eaten throughout spring.

Dies back completely. Cut back dead foliage in autumn. The crown is very hardy — BC Zones 5–7 are ideal. Do not mulch too heavily over the crown; good drainage is more important than insulation for this plant.

Blanched shoots: steam and serve with hollandaise or butter — a classic Victorian delicacy. Raw young leaves in salads. Flower buds eaten like broccoli. The flavour is nutty, sweet, and unlike any other brassica. A rare and underused delicacy.

Plant divisions or crowns in moist, humus-rich soil in partial to full shade — ideal for the understory of a food forest. Native to BC and the Shuswap region. Spreads by underground runners to form colonies over time. Provides excellent ground cover and habitat while yielding a prized edible.

Harvest fiddleheads in early spring when they are 2–4 inches tall and still tightly coiled. Harvest no more than half the fiddleheads from each crown to ensure the fern can fully leaf out. Remove the papery brown chaff before cooking. The harvest window is brief — 1–2 weeks per plant.

The fronds die back completely. Leave the dead fronds in place through winter — they provide insulation for the crown and habitat for beneficial insects. Clean up in very early spring, just before fiddleheads emerge. No additional protection needed in the Shuswap.

Always cook fiddleheads — raw fiddleheads contain a mild toxin neutralized by heat. Steam or blanch for 10–15 minutes. Sauté in butter with garlic. Add to stir-fries and pasta. Pickle in a light brine for later use. The flavour is grassy, nutty, and distinctly spring-like.

Direct sow in spring or plant divisions 8–10 inches apart. Tolerates a wide range of soils and partial shade. Very low maintenance — virtually pest-free. Deadhead flower heads before they set seed to prevent prolific self-seeding. Divide large clumps every 3–4 years.

Cut leaves to 1–2 inches above the soil from the plant's first year. Harvest can continue until hard frost. Flower stalks and open flowers are also edible and make a beautiful garnish. The plant re-grows quickly after cutting — multiple harvests per season are possible.

Dies back fully or persists as a semi-evergreen rosette depending on winter severity. Cut back dead growth in autumn. Fully hardy in Zone 5 and above. One of the first plants to re-emerge in spring — often harvestable before the last frost.

Milder than regular chives with a distinct garlic note. Add fresh to dumplings, egg dishes, and soups. Make into a compound butter. Blend into salad dressings. Use flower buds and blossoms as a garnish. Particularly valued in East Asian cooking — essential in many dumpling fillings.

Plant root cuttings 18–24 inches apart in deep, loose soil in full sun to partial shade. Extremely vigorous — like comfrey and Jerusalem artichoke, designate a permanent bed or use a buried root barrier. Will grow in most soils; richer soil produces larger, more flavourful roots.

Dig roots in autumn after the first frost, when the heat and flavour compounds are most concentrated. Leave a few small side roots to regrow for next year's crop. Young spring leaves are also edible. Roots can be harvested again in early spring before the plant leafs out fully.

The plant dies back completely. No protection needed — roots are fully hardy and will survive deep freezes. The challenge with horseradish is containment, not survival. Any small piece of root left in the ground will regrow.

Grate fresh root and mix immediately with white vinegar to fix the heat and colour — exposure to air turns it bitter quickly. Use in cream sauces for beef and smoked fish. Add to beet dishes, coleslaw, and devilled eggs. Make into prepared horseradish condiment. Hot-infuse into vinegar or oil.