Globe artichoke

1. 1

   Choose offsets over seed

   Seed-grown plants are variable — some produce small spiny buds with poor flavour. Offsets (rooted side-shoots taken from established plants) come true to the parent variety and crop reliably. Buy offsets from a specialist herb/veg nursery (Pennard Plants, Marshalls, RHS Wisley shop) in March–April. One plant produces 4–6 buds per year at peak; allow 2–3 plants for a household.

2. 2

   Pick a UK-suitable variety

   Green Globe: the UK standard — vigorous, large green buds, reliable cropping, hardy enough for most gardens. The safe choice for a first artichoke. Violetto di Chioggia: smaller purple-green buds, attractive ornamental, slightly less hardy. Imperial Star: bred to crop in year 1 from seed — useful if buying seed (rare) rather than offsets. Gros Vert de Laon: heritage variety, large green-purple buds, decent UK performance.

3. 3

   Plant in deep, well-drained, sunny soil

   Globe artichokes want deep fertile soil that holds moisture but doesn't waterlog. Full sun essential — 6+ hours direct sun for proper cropping. On heavy clay: build a raised bed or fork in plenty of grit and well-rotted manure before planting. Spacing 1 m apart, in rows 1.5 m apart — these are big plants (1.5 m tall and 90 cm wide at maturity).

4. 4

   Plant offsets in spring

   April or early May, after the worst frosts have passed. Set offsets at the same depth they were growing (the small rosette of leaves at the soil surface). Water in deeply. Mulch with a 5 cm layer of well-rotted manure around (not on) the crown.

5. 5

   Don't expect a crop in year 1

   Year 1: leaf growth only — let the plant establish, remove any flower buds that form (they exhaust a young plant). Year 2: first proper crop — 4–6 buds per plant in June–August. Years 3–5: peak cropping. Year 5+: declining — replace by planting fresh offsets taken from the parent.

6. 6

   Cut buds when fully formed but tightly closed

   The harvest window is narrow. Cut buds when they're fully expanded to maximum size but still tight — the scales should still be pressed closely together. Cut with secateurs, leaving 5–10 cm of stem attached. Once the scales start to open (the bud begins becoming a flower), it's past the eating stage — the choke (the fuzzy bit at the centre) has developed and is inedible. Let those open buds become flowers — they're stunning purple thistle-flowers and excellent for bees.

7. 7

   Mulch the crown in autumn for winter protection

   Globe artichoke's main UK weakness is cold wet winters. In November, cut spent stems down to 30 cm, then pile a 15–20 cm deep mulch of bracken, straw, or dry leaves over the crown to protect from frost. Remove the mulch in spring once new growth appears (March–April). In very cold gardens (Highland Scotland, exposed sites), grow in a pot that moves to a cold greenhouse for winter.

8. 8

   Take offsets every spring to perpetuate

   Year 3 onwards: lift offsets from the base of established plants each spring. Use a sharp spade to slice down through the soil, separating a young side-shoot with its own roots from the parent crown. Replant immediately. Use the offsets to: (1) replace declining parent plants (year 5+), (2) expand the bed, (3) give to friends. This is how globe artichokes have been propagated for centuries.

Blackfly can colonise stems; slugs eat young plants. Generally manageable.