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Organic Imperial Star Artichoke Seeds

$4.99

Organic Imperial Star Artichoke Seeds

$4.99
SKU:
OG-1200
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Calculated at checkout
Current Stock:
25
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Product Description

Cynara scolymus
Item #OG-1200 | 20 Seeds
Organic Imperial Star Artichoke seeds require the shortest period of vernalization and will produce in the first season. Needs about 500 hours below 50°F. Plant is rounded, nearly spineless and the bud-   size 3-4" with 6-8 mature buds per plant. Can be treated as a perennial to zone 6, other than grown as an annual. 250 hours is about 10.5 days, better if 35 days. 80-90 days to harvest. Grown Organically. 20 seeds per pkg.

Vegetable Garden - Tips on Growing Artichoke From Seeds

The objective is to convince the Artichoke plant that it is two years old and ready to make buds, rather than a seedling ready to make only leaves. This is done by growing the plant at cool temperatures for a prescribed length of time. This cold treatment makes the seedling behave as if it is an older plant ready to flower.

Before you use the cold treatment here is information for sowing the seed.

Sowing the Artichoke Seeds

  • Artichoke Seed Depth: ¼" (6mm)
  • Germination soil temperature: 70-80ºF (21-27ºC)
  • Days to Germination: 10-14

Sow Indoors:

  • Late winter to early spring- 10 weeks before last frost.

Sow outdoors: Not recommended.

Growing Artichoke Seeds:

  • pH range: 6.5 - 8.0
  • Growing soil temperature: 60-75ºF (16-24ºC)
  • Spacing in beds: 24" (60 cm)
  • Watering: Heavy
  • Light: 8 hours or more per day
  • Nutrient requirements: N=high, P=high, K=high

Temperatures during the cold treatment should remain below 50° F (10° C) but above 35°F (2° C) for at least 250 continuous hours (about 10½ days). Since it is difficult to prevent times when temperatures rise above 50° F (10° C) give the plant the cold treatment for an even longer period, let's say from four to six weeks.

Put the plants in a cold frame about six weeks before the last frost based on your location and zone. When all danger of frost is past and the soil temperature is above 60ºF (16ºC) set plants about 2 feet apart in the bed.

USDA Hardiness Zone -First Frost Date- Last Frost Date

  • Zone 1  -July 15th -June 15th
  • Zone 2  -August 15th- May 15th
  • Zone 3  -September 15th May 15th
  • Zone 4  -September 15th May 15th
  • Zone 5  -October 15th April 15th
  • Zone 6  -October 15th April 15th
  • Zone 7  -October 15th April 15th
  • Zone 8  -November 15th March 15th
  • Zone 9  -December 15th February 15th
  • Zone 10 -December 15th January 31st (sometimes earlier)
  • Zone 11 -No frost. No frost.

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