Porto Spineless

CultivarCynara cardunculus 'Porto Spineless'

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Artichoke (the species)
Photo: Jamain · CC BY-SA 3.0 · Wikimedia Commons

Fact sheet

every fact quoted from its source
Days to germination10–21 days

from Artichoke · “10 to 21 days” — Artichoke Seed Planting Instructions | Reimer Seeds

Days to maturity80–117.5 days

from Artichoke · “Most artichoke plants mature in 75 to 150 days after you move them outdoors.” — How long until artichoke plants mature? - Smart Garden Experts

Germination temperature45–50 °F

from Artichoke · “Cold treatment plays a big role in when your plants produce their first buds. This process goes by the name vernalization. It means keeping young plants in cool temps between 45 and 50 degrees Fahrenheit for about 250 hours.” — How long until artichoke plants mature? - Smart Garden Experts

Lightfull sun

from Artichoke · “full sun” — Artichoke Planting Guide | Zones, Dates & Tips

Watermoderate — regular watering when the top inch of soil feels dry

from Artichoke · “moderate — regular watering” — Artichoke Planting Guide | Zones, Dates & Tips

Hardiness zonesZone 7a – 11b

from Artichoke · “Zone 7a – 11b” — Artichoke Planting Guide | Zones, Dates & Tips

Propagationseed

from Artichoke · “seed” — Artichoke Planting Guide | Zones, Dates & Tips

Start indoors8–10 weeks before last frost

from Artichoke · “8-10 weeks” — Artichoke Planting Guide | Zones, Dates & Tips

Transplantafter the last frost

from Artichoke · “after the last frost” — Artichoke Planting Guide | Zones, Dates & Tips

Ready whenbefore scales begin to open for best flavor

from Artichoke · “before scales begin to open” — Artichoke Planting Guide | Zones, Dates & Tips

Edible partsflower buds

from Artichoke · “flower buds” — Artichoke Planting Guide | Zones, Dates & Tips

IndoorsProvide consistent moisture and mulch heavily.

from Artichoke · “Provide consistent moisture” — Artichoke Planting Guide | Zones, Dates & Tips

Pestsgray mold (botrytis), aphids

from Artichoke · “gray mold (Botrytis)” — Artichoke Growing Guide — SproutSmart

Diseasesgray mold (botrytis)

from Artichoke · “gray mold (Botrytis)” — Artichoke Growing Guide — SproutSmart

Companionspeas, tarragon, sunflower

from Artichoke · “Peas, Tarragon, Sunflower” — Artichoke Planting Guide | Zones, Dates & Tips

Keep away fromfennel

from Artichoke · “Fennel” — Artichoke Planting Guide | Zones, Dates & Tips

Porto Spineless hasn't been researched on its own yet; these facts are for the species as a whole.

Who grows this

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