GrowingHQ
Vegetablestem vegetableSome care needed

Globe artichoke

Cynara cardunculus var. scolymus

An enormous silver thistle grown for its unopened flower buds, and worth a place in a border on looks alone — which is just as well, because the yield from the space is modest. It is genuinely a dual-purpose plant rather than a vegetable that happens to be tolerable to look at.

Position
Full sun
Water
moderate demand
Drainage
Free-draining
Grows to
150–180 cm × 90–120 cm
Hardiness
H4
Harvest
June to August
Difficulty
Some care needed

August

Harvest

Globe artichoke’s year

Resolved for United Kingdom (general). Every window is stored against a climate event rather than a date, so a late frost pocket runs later than the band shows. What else August calls for.

ActivityJFMAMJJASOND
PlantMarch. April.
HarvestJune. July. August.
DivideApril.

Timing that travels

The band above resolves this plant's windows into months for one region. These are the windows themselves, stored against a climate event rather than a date — which is the form that survives being carried to a colder garden, a frost pocket, or next year.

Conditions it needs

Light
Full sun
Frost
Hardy
Hardiness rating
H4 (RHS)
Grows best at
15–25 °C
Soil
Loam, Sandy
Soil pH
6–7.5
Drainage
Free-draining
Water needs
moderate
Drought
good tolerance
Waterlogging
poor tolerance
Heat
good tolerance
Wind and exposure
poor tolerance
Where these figures come from
LightSourced guidancemoderate confidence
  • Royal Horticultural Society: Globe artichoke — position

Checked 2026-08-13

FrostSourced guidancehigh confidence
  • Royal Horticultural Society: Globe artichoke — hardiness

Checked 2026-08-13

Hardiness ratingSourced guidancemoderate confidence
  • Royal Horticultural Society: RHS hardiness ratings

Checked 2026-08-13

Grows best atSourced guidancemoderate confidence
  • Royal Horticultural Society: Globe artichoke — temperature

Checked 2026-08-13

SoilSourced guidancemoderate confidence
  • Royal Horticultural Society: Globe artichoke — soil

Checked 2026-08-13

Soil pHSourced guidancemoderate confidence
  • Plant Finder — Missouri Botanical Garden: Cynara cardunculus — culture

Checked 2026-08-13

DrainageSourced guidancemoderate confidence
  • Royal Horticultural Society: Globe artichoke — soil

Checked 2026-08-13

Water needsHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

DroughtHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

WaterloggingHorticultural consensusmoderate confidence

Winter wet kills it far more often than winter cold.

No external citation — see the evidence type above.

Checked 2026-08-13

HeatHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Wind and exposureHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

On your soil

Computed by comparing this plant's recorded requirements against each soil's recorded characteristics. A recorded horticultural fact overrides the comparison where GrowingHQ holds one.

SoilVerdictWhy
Heavy clayWorks, with one conditionGlobe artichoke will crop on heavy clay, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.
SandyPrefers this soilSandy suits Globe artichoke as it stands: The pH suits it: it wants 6 to 7.5, and this soil is in that range. The free drainage is exactly what it wants. Sandy soil is among the soils it is recorded as suiting. It stands dry conditions better than most, which this soil will test.
Chalky and alkalineGrows well hereGlobe artichoke grows perfectly well on chalky and alkaline without special measures, though it is not the soil it would choose.
LoamPrefers this soilLoam suits Globe artichoke as it stands: The pH suits it: it wants 6 to 7.5, and this soil is in that range. The free drainage is exactly what it wants. Loam is among the soils it is recorded as suiting. The soil holds moisture, which saves a great deal of watering.
SiltyPrefers this soilSilty suits Globe artichoke as it stands: The pH suits it: it wants 6 to 7.5, and this soil is in that range. The free drainage is exactly what it wants. The soil holds moisture, which saves a great deal of watering.
Peaty and acidWorks, with one conditionGlobe artichoke will crop on peaty and acid, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.
Shallow over rockPrefers this soilShallow over rock suits Globe artichoke as it stands: The free drainage is exactly what it wants. Loam is among the soils it is recorded as suiting. It stands dry conditions better than most, which this soil will test.
Made ground and urban soilWorks, with one conditionGlobe artichoke will crop on made ground and urban soil, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.

Not sure which you have? Four hand tests will settle it.

Space and spacing

Mature height
150–180 cm
Mature spread
90–120 cm
Rooting depth
60 cm
Spacing
90–120 cm apart
Where these figures come from
Mature heightHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Mature spreadHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Rooting depthHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

SpacingSourced guidancemoderate confidence
  • Royal Horticultural Society: Globe artichoke — spacing

Checked 2026-08-13

How far apart to plant globe artichokeThree globe artichoke plants drawn in a row at their recorded spacing of 90–120 cm between plants. The spacing is drawn to scale against a one metre rule; the plants themselves are symbols rather than scale drawings, so the distance between them is the part to read.90–120 cmone metre
Measured centre to centre. Plants set closer than this compete for light and water long before they look crowded, and the crowding cannot be undone once they are in.

Where and how you can grow it

Each way of growing is assessed separately, and “not assessed” is a real answer rather than a gap we have filled in with a guess.

MethodSuitabilityWhat it needs
Open groundWorkable
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Traditional dug bedWorkable
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Raised bedWorkable
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

ContainerMarginal
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Very large — 40 litres minimum, and still smaller than in the ground
GreenhouseMarginal
source

Sourced guidancemoderate confidence

  • Agriculture and Horticulture Development Board — AHDB: Globe artichoke — cultivation

Checked 2026-08-13

PolytunnelMarginal
source

Sourced guidancemoderate confidence

  • Agriculture and Horticulture Development Board — AHDB: Globe artichoke — cultivation

Checked 2026-08-13

HydroponicsNot suitable
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Growing it

  • ProtectionMulch the crown thickly in late autumn on any but the mildest, best-drained site. Winter wet rather than winter cold is what kills globe artichokes, and a mulch that sheds rain matters more than one that insulates.
  • PruningCut the old flowered stems down to the base after cropping, and remove any dead foliage in spring. The plant looks dead in March and usually is not.
  • PropagationNamed artichokes do not come true from seed, so plants are increased by taking offsets in spring. Cut a rooted side shoot away from the parent crown with a sharp spade, keeping as much root as possible and a few leaves, and shorten the leaves by half to reduce the demand on those roots while it establishes. Replace plants every three or four years, because cropping falls away as the crown ages.
Where this guidance comes from
ProtectionSourced guidancehigh confidence
  • Royal Horticultural Society: Globe artichoke — care

Checked 2026-08-13

PruningSourced guidancehigh confidence
  • Royal Horticultural Society: Globe artichoke — care

Checked 2026-08-13

PropagationSourced guidancemoderate confidence
  • Royal Horticultural Society: Globe artichoke — propagation

Checked 2026-08-13

Where to make a pruning cutFour stems compared. The first is cut cleanly on a slope about five millimetres above an outward-facing bud, sloping away from it, and is labelled correct. The second is cut too far above the bud, leaving a long stub that dies back. The third is cut too close, into the bud itself, which loses the shoot. The fourth is cut sloping towards the bud so rain runs onto it rather than away, which rots it. In every case the bud points outwards, away from the centre of the plant.Correct5 mm, sloping awayToo highstub dies backToo closebud lostSloping inrain sits on the bud
The bud you cut to becomes the new shoot, and it grows in the direction it points — which is why an outward-facing bud opens the plant up and an inward-facing one crosses the middle.
Four ways to make more plantsFour propagation operations compared, each showing where the separation is made and what must be present on both sides of it. Division: a clump cut between crowns, with roots and at least one growing point on every piece. Stem cutting: a shoot cut just below a leaf node, because the node is where roots form, with the lower leaves removed. Runner: a plantlet already rooting where it touches the ground, severed from the parent only after its own roots have taken. Offset: a young shoot at the base of the parent, separated with its own roots attached. In each case the cut is marked and the part that must be retained is labelled.Divisioncut between crownsroots on every piececut below a nodeStem cuttingroots form at the nodestrip the lower leavesRunnerlet it root firstthen sever the linkOffseta shoot at the basetake its roots with it
The rule is the same in all four: the new piece needs both a growing point and roots of its own. A cutting is the exception that has to make its roots afterwards, which is why the node matters so much.

Is it worth putting under cover?

Whether it will grow there is on the methods table above. This is whether the space is well spent, which is a different question and usually the one being asked.

StructureWhat protection is worthWhat decides it
GreenhouseNo real benefit
source

GrowingHQ editorial positionmoderate confidence

What protection is worth for this crop, judged against the same standard as every other record in this file.

  • GrowingHQ editorial synthesis — GrowingHQ

Checked 2026-08-13

Sheer size. A mature plant is a metre and a half across and lives for years, which is a very large fraction of a domestic greenhouse for a crop that is hardy outdoors.
PolytunnelNo real benefit
source

GrowingHQ editorial positionmoderate confidence

What protection is worth for this crop, judged against the same standard as every other record in this file.

  • GrowingHQ editorial synthesis — GrowingHQ

Checked 2026-08-13

Sheer size, in a structure with more of it to spare.

Harvesting

  • When it is readyCut the bud while the scales are still tightly closed. Once they begin to open it is inedible — though the flower that follows is spectacular and good for pollinators, which is a reasonable thing to do with the surplus.
  • How to pick itCut the head with secateurs taking about 15 cm of stem with it, starting with the king head at the top of the stalk — removing that one brings the smaller side heads on. Cut while the scales are still tight and closed against the bud; once they begin to open the choke inside has gone fibrous and the head is only ornamental.
Where the harvest guidance comes from
When it is readySourced guidancehigh confidence
  • Royal Horticultural Society: Globe artichoke — harvesting

Checked 2026-08-13

How to pick itSourced guidancehigh confidence
  • Royal Horticultural Society: Globe artichoke — harvesting

Checked 2026-08-13

What goes wrong

ProblemHow oftenNotes
Aphidscommon
source

Horticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Blackfly cluster in the developing buds and are hard to wash out.
Slugs and snailsoccasional
source

Horticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Sources for this page

Agriculture and Horticulture Development Board · GrowingHQ editorial synthesis · Plant Finder · Royal Horticultural Society

Each figure on this page carries its own citation, under the “where these figures come from” note in its section. Record last reviewed 2026-08-14.