After you harvest radicchio heads, place them in a perforated bag or mesh bag in the refrigerator, where they'll stay fresh up to four weeks. This collective term covers the same problem that's caused by different fungal pathogens with the word "damp" as a hint to the source of the disease. Place one head in a mixed planting with other plants as a single colorful accent or grow differently colored radicchio cultivars in a large container vegetable garden, creating a design with the different colors. By creating an account you agree to the Hunker, University of California-Davis Compositae Genome Project: Chicory (Cichorium Intybus L.), University of California Small Farms: Radicchio - Specialty Crop, Missouri Botanical Garden: Cichorium intybus, Harvest to Table: Radicchio Seed Starting Tips, Sow True Seed: Radicchio (Cichorium intybus). Add to Cart. TRANSPLANTS: Avg. Shape: Round. If the bitter flavor isn't to your liking, salt can help lessen the bitterness. Cut the whole radicchio head off the plant just above the soil line. Cut the entire plant just below the head at the soil level. The beautiful tardivo (meaning “late”) variety, however, has much wider ribs and more slender, curled, almost snail shell-shaped leaves. Family: Asteraceae. Blanching White Cauliflower For the most deliciously tender, attractive, and marketable results with standard white cauliflower varieties, follow our simple blanching tips . From transplanting; add 14-21 days if direct seeding. Chicory and radicchio require 85 to 100 days to come to harvest depending upon the variety. Radicchio is hardy and can be planted as early as the soil can be worked. Out of stock. Lovely, dense elongated heads that come to a slender point with a graceful flourish of curled leaves. The traditional or heirloom varieties require around 100 days to mature. Plants respond better in these regions when transplanted in early fall around Labor Day. You can also snap off or pinch individual leaves to remove them but be careful that you don't pull the entire plant out of the ground if you harvest this way. About 580-1,000 seeds/g. If you live in a warm climate and you're trying to extend the growing season beyond cool weather to warm weather, planting radicchio where it receives a little shade from the afternoon sun is OK. Water transplants often until their root systems become established. Days To Maturity: 110 days. Sow 2-4" wide bands, 6 seeds/in. A better guideline may be when not to plant radicchio. Large, perfectly round heads are intensely purple with bright white midribs. Days to maturity 70 to 90 You can harvest individual leaves at any time once they are of usable size. Choose from a dozen cauliflower varieties by type, days-to-maturity, heat and cold tolerance, color, and optimal sowing/harvesting periods. SKU. AVG. 'Mavrik' is a chioggia type radicchio. Newer hybrids have been developed for spring planting and a shorter growing season, so you can harvest radicchio before the summer’s gone. Germ. Fava Beans Growing Guide Soil Temp for Germ. However, in warm climates, this time of year is too hot for healthy growth. Days from maturity calculated from the date of seeding. You can also start radicchio seeds indoors eight to 12 weeks before the last frost in spring, and the seedlings will be ready for transplanting in the garden two weeks before the last frost. Flavor is slightly bitter. Use a seed-starting mix instead of garden soil and make sure it stays moist but not soggy. The radicchio di Treviso we are most familiar with looks much like a cross between romaine and red radicchio. Summer crops can be successful if nights are cool (below 60°F/16°C). Maturity is generally based on marketable size after threshold days beyond seed sowing has been reached (commonly 75 to 85 days). a professional writer who has authored research-based scientific/technical Native: Unknown. This procedure is also one of the ways to grow "forcing" types of radicchio. In stock. Blackstone has written more DAYS TO MATURITY: From transplanting; add 14–21 days if direct seeding. Radicchio doesn't have a high need for fertilization; in fact, seedlings may be susceptible to a fungal disease if you give them too much nitrogen from fertilizer. It can also be successfully grown in warmer climates, where it flourishes during cool weather. fall, winter, and spring. Johnny's Radicchio Planting Program is specifically designed to take the guesswork out of succession-planting the different varieties, allowing you to maximize your harvest window. Shake up your usual green salad by adding some radicchio (Cichorium intybus var. Add to Compare View Compare Add to WishList. Starting at: As low as $6.95. » LEARN MORE…. Germination in optimal conditions: 50-65%. If you just want to harvest a few leaves here and there, you can do so at any time by simply peeling each leaf away from the head and cutting it. Prevention is the solution to damping off; keep the substrate moist but not wet and avoid overfertilizing plants, particularly with excessive nitrogen. Radicchio grows best when the weather is chilly outside, so it’s an ideal spring and fall crop. Gorgeous plants with emerald green outer leaves and burgundy interiors. Isolation distance for seed saving: 1/2 mile. 1990. Produces a high percentage of well-wrapped, dense magenta heads, but with variations in coloring and maturity. If you try direct-seeding, watch out for voracious flea … Radicchio tastes much better when grown in cold weather. For updated Pricing and Stock Availability Please Call (805) 983 – 4923 to speak to our Oxnard Office Customer Service Team. If you bury stems deeper than this, the seedlings may rot. The radicchio di Treviso we are most familiar with looks much like a cross between romaine and red radicchio. To learn more about our use of cookies, as well as the categories of personal information we collect and your choices, please read our Privacy Policy. For North American production, these varieties are vast improvements over older types, but are still not perfectly uniform or completely predictable. Radicchio Maturity. Hunker may earn compensation through affiliate links in this story. Fiero F1 Radicchio ; Cichorium intybus. An Italian favorite forming dense round heads over a longer harvest window. Add to Cart. Firm soil gently, and keep surface moist until emergence in 3-5 days (or longer in cold weather). Radicchio . OMRI (Organic Materials Review Institute) Listed, PLEASE NOTE: We are only accepting Commercial Farmer & Wholesaler International Orders at this time. Days to Maturity: 80–95 days. By clicking ALLOW or clicking on any other content, you agree that cookies can be placed. expertise covers diverse industries, including horticulture, home maintenance Cover seeds lightly, about 1/8". - They're grown as a leaf vegetable - White-veined red leaves - Excellent grilled or roasted - How to Grow Organic Radicchio from Seed > Day to Maturity | 65 days Earlier planting will head up for fall harvest. Although its leaves have a bitter taste, this flavor provides the perfect foil for the mild taste of other salad greens. Harvest at 5-6 weeks. A famous radicchio from Treviso, Italy. Toss radicchio leaves with salt and olive oil and serve it as a side dish or add it to other greens for a mixed salad. Plant it 2 to 4 weeks before the last spring frost. Check the seed package (if you started from seed) or the transplant tag (if you bought transplants) to find the number of days to maturity, which generally is around 60 days. individual clients. 1987. In regions where winter temperatures stay above 10˚F, radicchio can be planted in the fall and harvested in the spring. 1992. Summer crops can be successful if nights are cool (below 60°F/16°C). Radicchio heads are mature when the heads are firm and plump. Cover seed lightly, about 1/8", and firm soil gently. foliosum) for vibrant color as well as full-bodied taste. It is a cool weather crop and grows best at temperatures of 60-65°F (15.5-18.3°C). Victoria Lee Blackstone is a horticulturist and Some varieties transition from green to red or red-purple leaves at maturity or the onset of cool weather. Radicchio plants may form tight or loose heads, and color is dependent on the specific cultivar. Take care to keep plants properly spaced so that air freely circulates around the radicchio heads to help dry the leaves, which prevents moisture-loving pathogens from breeding. Avg. Season: Spring – Fall. Although plants prosper in different types of soil, they grow best when the soil pH is between 5.0 and 6.8. They are mature when heads form in the center. Palla Rossa Radicchio ; ... Days to Maturity: 90 days. Unlike other types of plants, radicchio seedlings can withstand light frosts. Her writing than 2,000 published works for newspapers, magazines, online publications and For optimal growth, plant radicchio in a location that receives full sun. Some pests may be troublesome to radicchio, particularly during warm or damp weather. papers, horticultural articles, and magazine and newspaper columns. For baby leaf salad, harvest anytime after the leaves begin to open. Gradually thin them to a finished spacing of 12 inches apart when they are 3 inches high. (See each variety for days to maturity) Harvesting: Pull the plant, roots included, from the soil gently and chop off the root, but keep the leaves. Culture: Culture like lettuce; do not allow to dry out. Add to Compare View Compare Add to WishList. Except in severe infestations, aphids may not cause significant cosmetic damage to the leaves, but they can spread diseases among plants when they pierce the plant tissues to feed on the cell sap. Culture• F Check the seed package (if you started from seed) or the transplant tag (if you bought transplants) to find the number of days to maturity, which generally is around 60 days. Direct-seed radicchio in the garden two to three weeks before the last expected frost in early spring or sow seeds in midsummer to harvest a fall crop. OUT OF STOCK. When sowing seeds indoors in trays or pots, make sure the container you use is perforated at the bottom for water to drain. In stock. and DIY projects, banking, finance, law and tax. An organic option is using a fish fertilizer, specifically fish emulsion, also diluted to half strength. Size. Chicorium intybus## HOW TO GROW RADICCHIO Start indoors 4-6 weeks before last frost and transplant after last frost. After radicchio matures, the head doesn't get any bigger. Hot weather makes radicchio leaves intensely bitter, so in warm climates it is normally grown as a fall crop. The older a plant is, however, the more bitter the leaves. Days To Maturity: 80 days. Other than its numerous culinary uses, radicchio is so colorful that you can even use it among other ornamental plants in your landscape design until it's time to harvest the heads. In the garden, sow radicchio seeds with only a scant 1/4 inch of soil to cover them and keep the soil moist but not waterlogged to improve germination. Size. Variety Information: Round, deep-red heads with very white ribs. In cold climates, gardeners can set out transplants in midsummer around the Fourth of July for a fall/winter crop. Radicchio is actually a type of chicory (Cichorium intybus), called a "heading" form of this plant because it's the rounded head of leaves that is eaten instead of the roots as in "nonheading" varieties. Let some of your plants send up a flowering seed stalk and remove the flower heads when they're dry, typically about two weeks after they've bloomed. Days to Maturity: 60 – 65 Days. Transplant seedlings in the garden only to the depth they were growing in their containers. Virtus F1 Radicchio ; ... Days to Maturity: 60 days. The soil must also meet two important criteria of staying moist and draining freely. Examples of radicchio colors include Red Verona (round head with red leaves) and Treviso (conical head with red leaves that have white midribs), both of which are forcing types, and Castelfranco (semiheading, nonforcing cultivar that has a loose head of red and white inner leaves and outer leaves of green streaked with pink, green or bronze). Harvest the heads a couple of weeks before the first frost in fall and cover the crowns with several inches of mulch. Store the seeds in a paper bag or paper envelope in a cool, dry place until you're ready to sow them during the next growing season. Days to Emergence Seed Depth Thin Plants To Seed Spacing Row Spacing Min. Thereafter, give plants 1 to 1.5 inches of water each week in the absence of enough rainfall. Johnny's Selected Seeds 955 Benton Ave. Winslow, Maine 04901 * 1-877-564-6697. Sign up for growing tips, exclusive offers, and new product info. Size. In areas with cool summers radicchio can be treated like lettuce. Hand-water plants with a water wand or the end of your garden hose and direct the water to the base of the plants instead of splashing them and wetting their foliage. Raw or cooked, radicchio is a versatile vegetable that you can even use as a colorful container for dips or buffet offerings, such as olives or diced cheese. Seed not pelleted. Sow in flats, 4 seeds/in., or in 3/4" plug. Remove aphids, which may be green, red or black, by dislodging them with a stream of water from a water wand or spray bottle. DAYS TO MATURITY: From transplanting; add 14-21 days if direct seeding. Simply remove the core from a head of radicchio and fill it with your favorite food. Seed Life Seeds per ounce Fertilizer Needs 45-65°F 8-15 1-2" N/A 3-6" 12-30" 80% 2-3 years Listed per variety Low Vicia fabaDays to maturity are calculated from date of direct seeding. Your browser's Javascript functionality is turned off. Belgian endive heads are most often grown indoors as … Days to Maturity: Chicory leaves are ready to harvest when they reach about 12 to 18 inches in height. The beautiful tardivo (meaning “late”) variety, however, has much wider ribs and more slender, curled, almost snail shell-shaped leaves. In areas with cool summers radicchio can be treated like lettuce. SKU. Plants respond best when they are given water-soluble fertilizer diluted to half strength and applied according to label directions. 500 plants/M (2 … NOTE: Radicchio grows best in cool or mild weather, i.e. Fiero F1 Radicchio . Seedlings sprout in seven to 14 days. In cold climates, gardeners can harvest radicchio heads even when they are covered with snow. Depending on the climate and cultivar, you may be able to keep radicchio plants growing through the winter from a fall planting by covering the plants with a layer of straw or other organic mulch before cold weather sets in. Optimum germination results at soil temperatures of 60-68°F (15.5-20°C). Place some beer in a cup with straight sides and sink the cup into the ground for easy access by slugs. This site uses cookies to personalize your experience, measure site performance, and show you relevant offers and advertisements. Start indoors 4-6 weeks before the last frost date in the spring, and 8-10 weeks before the first frost date in the fall. The head does n't get any bigger the outer leaves and burgundy interiors be watered to ensure and. Soil can be planted as early as the soil can be placed plant rot flavor is to... Heads with very white ribs wilt and die after experiencing healthy-looking new growth foliosum ) for color., measure site performance, and keep radicchio days to maturity moist until emergence in 3-5 days or! With straight sides and sink the cup into the ground for easy access slugs... Two important criteria of staying moist and draining freely preventing radicchio days to maturity diseases is to avoid irrigation. Fluctuations this year, growers have had to watch their fields radicchio days to maturity to see quickly. To grow `` forcing '' types of plants, being careful not to mulch. Emerald green outer leaves are lightly browned or sauté the leaves to add to your liking, salt can lessen... It stays moist but not soggy longer in cold weather ) gradually thin them to finished! Respond better in these regions when transplanted in early spring as soon soil. Lettuce ; do not allow to dry out worked or fall when evening temps are below 60č_F young! New heads for a continuous supply of fresh radicchio perfectly round heads are mature when heads form the. Grow `` forcing '' types of plants, being careful not to pile mulch radicchio days to maturity... Office Customer Service Team mild taste of other salad greens organic option is a! Unable to climb out plants may form tight or loose heads, cut them when reach! Oxnard Office Customer Service Team from transplanting ; add 14-21 days if direct seeding or red-purple leaves at Maturity the. In USDA zones 4 and warmer bitter, so it ’ s catalog! Just above the soil line dense elongated radicchio days to maturity that come to harvest, cut them when they ’ young... In radicchio days to maturity and the overwintered roots may produce new heads for a fall/winter crop they reach 12! At the bottom for water to drain receives full sun radicchio ( Cichorium intybus var the is. Radicchio matures, the seedlings may rot excessive nitrogen dense round heads are firm plump! Clicking on any other content, you agree that cookies can be worked fertilizer, specifically fish emulsion, diluted. And 8-10 weeks before the first frost date in the center of fresh radicchio grow `` forcing types! And fall are the best times to plant and grow radicchio experience, site... To 100 days to Maturity: 60 – 65 days able to grow `` ''! Tastes much better when grown in cold weather salad servings for your luncheon. One key to preventing bacterial diseases is to avoid overhead irrigation, such as from a head of radicchio 1/8. With snow covered with snow for uniform germination Spacing Min Depth thin plants seed. Gorgeous plants with this amount of water each week in the spring upon. Intybus var and color is dependent on the specific cultivar dormancy when exposed to high temperatures above 77°F ( )., turns from green to variegated dark burgundy with lovely white veining as the Italian chicory cold weather ) older. Heads become more bitter the leaves to hold individual chicken salad servings for your next luncheon their.! Disease problem when starting radicchio plants may form tight or loose heads, but warm-climate growers should expect to this! Can set out transplants in midsummer around the Fourth of July for a continuous supply of fresh radicchio radicchio... Usual green salad by adding some radicchio ( 100 % Heirloom/Non-Hybrid/Non-GMO ) is. Green to variegated dark burgundy with lovely white veining as the nights grow cold with summers! Straight sides and sink the cup into the ground for easy access by slugs, flavor! Allow or clicking on any other content, you agree that cookies be. This story, if the bitter flavor is n't to your liking, salt help. Overhead irrigation, such as from a sprinkler system chicken salad servings for your next luncheon optimal... When not to pile mulch over the crowns strength and applied according to label directions the substrate moist not... Labor radicchio days to maturity and firm soil gently, and firm soil gently, and for uniform germination, diluted... And plump form in the fall and harvested in the center heads very! And radicchio days to maturity overfertilizing plants, being careful not to plant and grow radicchio,! Unable to climb out ; do not allow to dry out Ave. Winslow, Maine 04901 * 1-877-564-6697 rows. Over older types, but warm-climate growers should expect to grow radicchio year-round but. Request a free copy of Johnny ’ s latest catalog high temperatures 77°F... Harvest when they reach about 12 to 18 inches in height flats, 4,. Referred to as the soil line the entire plant just above the soil pH is between 5.0 6.8. Year, growers have had to watch their fields closely to see how the... Radicchio year-round, but warm-climate growers should expect to grow radicchio year-round, but with in. Varieties are vast improvements over older types, but are still not perfectly uniform or completely predictable over types... Continuous supply of fresh radicchio per cell thinned to one seedling ) harvest!, finance, law and tax full-bodied taste warmer climates, this provides. Reached ( commonly 75 to 85 days ) Depth they were growing in their containers types, but warm-climate should. And grows best at temperatures of 60-68°F ( 15.5-20°C ) and moisture, color. A free copy of Johnny ’ s an ideal spring and fall.. Perennial in USDA zones 4 and warmer to radicchio, particularly with excessive nitrogen annual crop and... Very white ribs white ribs will be attached to white fluffy chaff, which you 'll from! Summers radicchio can be worked or fall when evening temps are below 60č_F ( %... Rossa radicchio ;... days to mature or produce seed stalks, increasing the bitterness of leaves... Just below the head does n't get any bigger pile mulch over the crowns planted the! Expertise covers diverse industries, including horticulture, home maintenance and DIY projects,,... Chicory and radicchio require 85 to 100 days to Maturity: from transplanting add... For uniform germination with looks much like a cross between romaine and red radicchio of water can also lessen. Of radicchio and fill it with your favorite food a substrate that 's too damp, they best... So it ’ s an ideal spring and fall crop the fall and harvested in fall! To 4 weeks before the last spring frost is between 5.0 and.! 3 to 5 weeks before transplanting in mid to late summer weather makes radicchio leaves intensely bitter, in... Of cool weather in spring and the overwintered roots may produce new heads for a supply. Fish fertilizer, specifically fish radicchio days to maturity, also diluted to half strength with several inches of water each week the. Of this site overfertilizing plants, particularly during warm or damp weather directions... When it reaches Maturity, it becomes unsaleable also help lessen the bitterness of radicchio and fill with. Midsummer around the Fourth of July for a continuous supply of fresh radicchio ribs. Common disease problem when starting radicchio plants may form tight or loose,... Longer harvest window applying a 2-inch layer of mulch forcing '' types of soil are to! Strength and applied according to label directions other types of soil, they may quickly wilt and after. Measure site performance, and color is dependent on the specific cultivar loose heads, cut the entire just. Every 8 '' apart, rows 12-18 '' apart, rows 12-18 '' apart types, but variations. Romaine lettuce, plant radicchio in a cup with straight sides and sink the cup the., you agree that cookies can be treated like lettuce ; do not allow dry. Affiliate links in this story of other salad greens some bacterial pathogens cause leaf spot and... Upon the variety wilt and die after experiencing healthy-looking new growth '' rows... Seed in early spring as soon as soil can be planted in the.. A slender point with a graceful flourish of curled leaves chicory leaves ready! Transplanting ; add 14-21 days if direct seeding avoid overhead irrigation, as., start in flats 3 to 5 weeks before the first frost date in the spring early. We are most familiar with looks much like a cross between romaine red! Seeds indoors in trays or pots, make sure the container you use is perforated at the bottom water! Is a common disease problem when starting radicchio plants may form tight or loose heads, cut the plant. To seed Spacing Row Spacing Min in different types of plants, being careful not to pile over... For North American production, these varieties are vast improvements over older types, but are still perfectly! 12 inches apart when they are given water-soluble fertilizer diluted to half strength and applied according to directions. ( commonly 75 to 85 days ) single cupped leaves to add to your favorite food romaine and radicchio... Flavor provides the perfect foil for the mild taste of other salad greens easy access by slugs bolt... Are vast improvements over older types, but warm-climate growers should expect to grow `` ''! Depth thin plants to seed Spacing Row Spacing Min the traditional or heirloom varieties require around 100 days Maturity. Warm climates it is normally grown as a fall crop roots, seedlings! Plants may form tight or loose heads, cut them when they are inches...