![]() ![]() When growing artichokes, time your planting so seedlings will have 10-12 days with temperatures below 50° F (10° C), to encourage early bud set and longer fruiting. They'll produce for several more years before you have to start again from seed or fresh seedlings. When the artichokes start getting smaller than you'd like, divide the crowns into several divisions, and transplant them into their own space. They re-sprout in August, leaf out in the fall, and grow through winter, then flower again the next spring.Įach plant produces for 4-5 years, with the chokes getting smaller and more numerous in the later years, because they’re producing from side-branches off the main stem. In July, with the peak of summer heat coming, we cut them back. We eat the big, dense artichokes from the middle of the plant first, then harvest the abundant baby chokes that follow until mid-June. ![]() The plants grow through the winter, put on a big burst of growth in March and April, then flower in May. You can broadcast seeds or plant seedlings, both work. Where I live in Zone 9, we plant artichokes in the fall, and let them overwinter through our rainy season unprotected. In the spring, uncover the stump to let it sprout. To overwinter plants in cooler zones, cut them back to 8-10” (20-25 cm) in late October, then cover the stump with 10” (25cm) of straw or dead leaves to protect from frost. Some artichoke varieties are frost hardy in zone 7 and above, and can tolerate winter low temperatures as low as 14° F (-10° C) if well-mulched. Transplant seedlings to larger pots as soon as they’re strong enough to handle. Time to Harvest: Hardiness Zones: Planting Time: Optimum Growth Temp: Germination Temp: Germination Time: Light Preferences: Optimal Soil pH: Seeds or Seedlings: Plant Size: Plant Spacing:Īrtichoke seeds germinate in 10-20 days-earlier, when kept moist at 65-70° (18-24° C). Sow seeds ¼” (0.6 cm) deep, ¼” (0.6 cm) apart, and cover with ¼” (0.6 cm) of fine vermiculite or sifted potting soil. How to Grow Artichokes Artichoke Cold Tolerance/SeasonĪrtichokes need a long growing season, so northern and alpine gardeners should start them indoors under lights 8 weeks before the last frost date. Growing Artichokes in Containers Harvesting Artichokes
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