Artichoke - Imperial Star - Cynara scolymus
Tender Perennial Imperial Star was bred to produce artichokes in one season as an annual, perfect for colder climates. In warm areas, zone 7 and up, treat as a perennial and leave for 6-7 years until they need to be divided. Grow as a dramatic part of an edible landscape, or in rows. Their ideal climate is a moist, coastal area.
Did You Know? Imperial Star was developed so that colder climates could produce artichokes in one season.
Soil Temperature: 65-85°F
Peaceful Valley Farm & Garden Supply brand seeds are guaranteed to germinate. Once the seeds have sprouted, please understand that Peaceful Valley cannot be held responsible for the many uncontrollable growing and climatic conditions that must be met to ensure the success of your crop(s).
Peaceful Valley brand vegetable seeds are all non-GMO and Certified Organic.
Planting Depth: 1/4"
Germination: 10-14 Days
Height At Maturity: 4’-6’
Days to Maturity: 85 Days
Sun/Shade: Full Sun
Spacing After Thinning: 4'-6'
Approx Seeds per ounce: 603 seeds
Buy with confidence and plant the best!
Planting & Care
Soil & Water: Artichokes need rich soil with good tilth and drainage. Add compost months before you plant the seeds, balanced fertilizer just before planting, and nitrogen fertilizer throughout the growing season. Water thoroughly once a week, wetting entire root system.
Planting & Growing: Sow indoors 8-12 weeks before the last frost. Place seeds 1/4" apart and 1/4" deep in moist soilless mix in 2-4" containers. Grow at 60-70°F daytime and 50-60°F nighttime. Transplant 6-8 week old plants 4'-6' apart, in rows 8' apart or as part of an ornamental landscape. Time the transplanting so plants get 8-10 days of 50°F for vernalization to promote budding. Protect from frost. Direct sow: if winter low is above 14°F plant seeds in fall in moist soil and harvest in spring.
Harvesting & Storage: Cut artichokes when they are 2"-4" in diameter, leaving a stem of about 2". Refrigerate up to 3 weeks.
Limited Guarantee for Dormant Trees & Plants (When Planted in the Ground by April 1st)
Claim Deadline is June 1st (with the exception of persimmon trees, which have a deadline of June 15th)! Claims placed after June 1st (or June 15th for persimmon trees) will be denied.
What We Guarantee
Our only guarantee is that your dormant tree/plant will arrive in good, viable condition and will leaf out by May 15th (historically 98% of our trees do). This guarantee is only available to customers who purchased their tree/plant directly from us, and who planted their tree/plant in the ground by April 1st (or temporarily in a pot if the ground in their zone was still frozen solid).
What We Cannot Guarantee
We cannot guarantee that your tree/plant remains alive & healthy, or bears fruit, as there are too many variables beyond our control in order to do so (i.e. soil preparation, planting, fertilization, weed & pest control, adequate irrigation and/or drainage, chill hours, compatible hardiness for your zone, proper choice of pollinator, etc).
How to Request a Credit
If your tree/plant does not leaf out by May 15th, please perform a scratch test by checking for green under the bark, a few inches over the graft. If the scratch test reveals a brown cambium, that means your tree/plant is dead or dying. Watch our video titled Bare Root (Dormant) Warranty on how to perform this simple test. If the scratch test revealed that your plant is dead or dying, pull it from the ground and take pictures of the entire tree/plant, including the roots. Submit your claim & pictures by using the “Return an Item” tool on our Customer Service page (or email us at firstname.lastname@example.org) no later than June 1st (or June 15th for persimmon trees). We will review your claim and issue you a credit (not a refund) for the purchase price of your tree/plant (excluding shipping).*
(*) We reserve the right to not issue credit for items purchased with credit, or if we determine (by the pictures you provide) that your tree/plant was improperly cared for (due to root rot, rodent or mechanical damage).