Stop replanting every year. These 8 perennial vegetables keep producing for decades — with zero extra work. Grow these only once and let them multiply. With just watering and proper care you can save your money while being passionate.
1. Asparagus (Asparagus officinalis)
Asparagus are harvested in spring. They live for 20 years. If you are growing from a seed. Then you must wait for 2 years for it to strenghten. After this you can start harvesting. Stop harvesting when spears become thinner than a pencil.It signals the crown is tiring. Let the remaining spears fern out to rebuild energy. In fall, cut brown ferns to the ground to prevent pests. Mulch heavily in winter.
2. Rhubarb (Rheum rhabarbarum)
They are harvested Spring to Early summer.Wait one full year before harvesting.Pull (don’t cut) stalks when they’re 10–15 inches long and thick as your thumb.Never remove more than 1/3 of the stalks at once. Stop harvesting by mid-summer so the plant stores energy. Always remove the flower stalk because they drain it. Divide crowded clumps every 5–6 years to rejuvenate.
Note: Only the stalks are edible. Leaves contain high oxalic acid and are toxic.
3. Globe Artichoke (Cynara scolymus)
Harvest in Late spring to midsummer.They have lifepsan of 5–10 years (perennial in zones 7+; grown as annual in colder zones)
Planting: Start seeds indoors 8–10 weeks before last frost, or buy rooted suckers. Needs full sun, fertile soil, and space (4 feet apart).arvest buds when they’re tight and firm, before the bracts open. After the main harvest, cut the stalk to the ground. The plant will send up new shoots (suckers) — these become next year’s producers. Divide mature plants every 3–4 years.
4. Horseradish (Armoracia rusticana)
Harvest in fall through early spring. They live indefinitely.
Plant root cuttings (sets) in early spring, 2 inches deep, angled at 45 degrees. Full sun to partial shade; tolerates poor soil. Dig up the main root in fall, but always leave small side roots or fragments behind — these regrow into new plants. It is nearly impossible to eradicate once established, so plant it in a contained area or bottomless bucket sunk in the ground.
Grate fresh root outdoors or in a ventilated area — the fumes are potent. Mix with vinegar immediately to stop browning and lock in heat.
5. Jerusalem Artichoke / Sunchoke (Helianthus tuberosus)
Harvest in fall through winter (improves after frost). They live indefinitely.
Plant tubers 4–6 inches deep in spring, 12–18 inches apart. Extremely hardy (zones 3–9); grows 6–10 feet tall with sunflower-like blooms. Harvest tubers as needed from fall through spring. Leave small tubers in the ground — they regrow automatically. It is so prolific it can become weedy; plant in a designated bed or large container.
Tubers store best in the ground. If you dig them up, they shrivel quickly — use within a week or store in damp sand.
Note: High in inulin, which can cause gas. The nickname “fartichoke” is earned.
6. Walking Onion / Egyptian Onion (Allium × proliferum)
Harvest year-round (greens, bulbs, and bulbils). They live indefinitely.
Plant bulbils (topsets) or offsets in fall or spring, 1 inch deep. Full sun, average soil. In summer, the plant sends up a flower stalk that forms a cluster of tiny bulbs (bulbils) at the top. The stalk bends under the weight, the bulbils touch the ground, take root, and “walk” across your garden.
Harvest the green shoots like chives anytime. Harvest bulbils for pickling or replanting. Dig the underground bulbs (milder than regular onions) in fall, but leave some to multiply. The plant essentially gardens itself.
7. Chives (Allium schoenoprasum)
Harvest spring through fall. They live indefinitely (divide every 3–4 years).
Sow seeds or divide clumps in spring. Full sun to partial shade; tolerates most soils. Cut leaves 1–2 inches above the base — they regrow from the center. Harvest continuously from spring to fall. In late spring, the plant produces edible purple flowers with a mild onion-garlic flavor.
Divide crowded clumps in spring or fall. Deadhead if you don’t want seedlings popping up everywhere. Cut the whole clump to the ground in late fall for a clean start next spring.
8. Sorrel (Rumex acetosa)
Harvest spring through fall. They live 5–10+ years.
Sow seeds in spring or divide mature plants. Full sun to partial shade; prefers moist, fertile soil. Harvest outer leaves continuously using the cut-and-come-again method. The younger leaves are mild and lemony; older leaves become tough and intensely sour. Cut the flower stalk when it appears to prolong leaf production.
Divide every 3–4 years to maintain vigor. In hot climates, partial shade prevents bitterness. Sorrel is one of the first greens to emerge in spring and one of the last to die back in fall.
