Artichoke Green Globe Seed
When should I plant
Artichoke seeds may benefit from cold stratification. Place the seeds in damp sand in the refrigerator for about 2 weeks before sowing. Start Green Globe artichoke seeds indoors 8–12 weeks before the last expected spring frost, typically between late January and early March. They require a long growing season (120+ days) and should be transplanted outside in spring after the danger of hard frost has passed.
Site consideration
Artichokes grow best in full sun and fertile, well-drained soil rich in organic matter. The ideal soil pH ranges from 6.5 to 7.5. Before planting, loosen the soil to a depth of 10–12 inches and incorporate compost or well-rotted manure to improve soil fertility and drainage. Because artichoke plants grow large, choose a location with plenty of space and good air circulation.
Water
Artichokes require consistent watering throughout the growing season to support vigorous plant growth. Provide about 1–1.5 inches of water per week, depending on weather conditions. Mulching around plants helps retain soil moisture and regulate soil temperature.
Sunlight
Artichokes demand full sun, at least 6 to 8 hours of direct sunlight daily. This ensures strong growth, large buds, and the best flavor.
Seed Germination
Sow seeds ¼ inch deep in seed-starting mix, maintaining soil temperatures between 60–70°F. Seeds typically germinate in 10 to 20 days. Keep soil consistently moist during this period.
Transplant
Harden off seedlings for 7 to 10 days before transplanting after frost danger has passed. Transplant seedlings outdoors when they are 6–8 inches tall and have developed several true leaves. Space plants 3–4 feet apart in rows 4–6 feet apart, as artichokes can grow into large plants. Water thoroughly after transplanting to help establish strong roots.
Other Elements
Fertilization
Artichokes are heavy feeders and benefit from nutrient-rich soil. Work compost or a balanced fertilizer into the soil before planting. Additional fertilizer applications during the growing season can support strong plant growth and bud production.
Weed control
Keep the planting area free of weeds, especially while plants are young. Apply organic mulch such as straw or shredded leaves to conserve moisture and suppress weed growth. Avoid deep cultivation that could damage the plant’s root system.
Harvest
Harvest buds measuring at least three inches across while the bud is still closed. The more a bud opens, the more bitter it becomes, and fully open buds are inedible. To harvest, cut the bud with about 2 inches of stem attached for easier handling. Lower buds won’t grow as large as the top ones. When all buds have been harvested, cut the entire plant back by one third to encourage future growth. Store artichokes in the refrigerator.
Seed Storage
The seeds will maintain a high germination percentage if stored under proper conditions. How long your seeds remain viable will depend on the temperature and moisture levels the seeds are exposed to. Seeds which are improperly stored will quickly deteriorate if unprotected against high humidity and dramatic temperature fluctuations day after day.
For best results, keep the seed in our moisture-proof ziplock sealing bags, which provide a better moisture prevention effect. Glass jar or plastic containers with snap-on lids works well too, add a packet of desiccant before sealing into the seed, such as silica gel to remove any moisture remains in the storage container. Seed stored under these conditions will remain viable for as long as years.
Factors Which commonly Cause Poor Results
1. Improper drainage soil
2. Sowing depth more than one inch
3. Covering the seed too deep beneath the soil surface
4. Cover a large area with a small amount of seed.
5. Plant at a wrong time of a year
6. Lack of sunlight
7. Inadequate rainfall after seed germination. The area should not be allowed to become completely dry. Supplemental watering may be required to sustain plant life.
8. Extreme weather conditions: hail, drought, excessive rainfall, floods, unseasonably cold temperatures.