Artichokes & Cardoon

Imperial Star Artichoke Organic

Imperial Star Artichoke Organic


This artichoke is for gardeners who can't overwinter artichokes or just want to grow them as an annual. The 6-8 buds of Imperial Star are nearly spineless, up to 3-4 inches in diameter, globe-shaped, and a rich glossy green. Imperial Star has the same rich flavor as our old favorite Green Globe. Will perennialize in areas above zone 7. PVP.

   Open Pollinated
Approximately 15-20 seeds per gram.
  • AR002/L
  • 1 gram Organic
  • $4.25

  • AR002/M
  • 4 grams Organic
  • $12.15

  • AR002/N
  • 1/2 oz Organic
  • $30.95
  • More Information
  • Customer Reviews (4)
Soil Temp for Germ.Days to EmergenceSeed DepthSoil Temp for Trans.Plant SpacingRow SpacingMin. Germ.Seed LifeSeeds per gramFertilizer Needs
65-75°F10-201/4"45°F3-5'4-6'70%1 year≈ 15-20Low

Cynara cardunculus var. scolymus: The flower buds of the artichoke are the harvested part of the plant. Artichokes are reported to contain the highest level of antioxidants of all vegetables!

C. cardunculus: Cardoon is a relative of the artichoke. Instead of consuming the flower as with artichokes, the fleshy leaf stems are eaten. Days to maturity are calculated from date of transplant.

• Artichokes are a tender perennial that prefer mild winters and cool summers
• Deep, fertile, well-drained soils with a pH of 6.5-7.5 provide optimum growth
• Before a hard frost, cut plants to 8-10 inches above ground and mulch with clean straw to keep the crown from freezing; crown death may occur at 25°F or lower

Direct Sowing
• Not recommended

• Start indoors in January, sow 3-5 seeds per 4 inch pot; thin out small or albino seedlings and keep the strongest plant
• Transplant after danger of frost, but when the seedlings can still receive 10-12 days of temperatures under 50°F to induce budding
• Work in 1 cup of TSC's Complete fertilizer around each plant

Insects & Diseases
Common insects: Aphids
Insect control: Neem oil or Pyrethrin
Common diseases: Crown rot, powdery mildew, molds
Disease prevention: Avoid overhead irrigation and water-logged soil

Harvest & Storage
• Cut buds before they start to open
• Smaller artichokes are the most tender
• Cardoon can be harvested green or blanched white by wrapping the young stalks with newspaper or piling straw around the plants for 30 days prior to harvest
• Store at 36°F and 95% relative humidity
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Oct 12, 2013  |  By Sarah Zuber
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I was told by a couple of people that artichokes don't grow here in Central Oregon. I proved them wrong! I ended up with 2 gorgeous plants (only 2 due to cut worms). They produced ample artichokes. I am more that happy with this breed. Summer 2013.
Feb 12, 2013  |  By Kari
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In 2012 I planted 2 Imperial Star plants and was surprised to have 13 and 18 flowers on each plant! All but the last 2 were of large size and the flavor was amazing. They have over wintered well. The name fits it well!
wonderful addition
Feb 9, 2012  |  By maggie
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Have planted this variety for 2 years in NJ (zone 6a) with strong results. Plants,surprisingly overwintered in both mild and severe winters. My crop was tennis ball sized, but the plant was a beautiful addition to my garden and I allowed some to flower for the decorative appeal. Somewhat subject to insects and mildew, but otherwise a winner.
My experience
Jan 29, 2012  |  By Shawn
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Territorial states 15-20 seeds per gram so I was expecting 60-80 from the 4 grams I purchased. I counted 108. I soaked 22 seeds for about 16 hrs or so, then placed them in a bowl between a folded moist paper towel and placed it on top of my fridge. Two days later a few started to sprout and there have been a few more everyday since. I plant each seed in a pot the day after they sprout. It has been 6 days since I placed them in a paper towel to sprout and so far 17 out of 22 have sprouted. I had read quite a few reviews where people had problems getting artichokes to sprout so I was planning to plant around 60 just to get 25 or so plants but now I see that won't be necessary.