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A lovely heirloom radicchio, Rossa di Verona has deep red, heart shaped leaves wrapped tightly around one another to form a solid, round head. Later and hardier than Treviso, it has a sharp flavour that mellows when grilled or treated with a hot oil dressing. Sow Rossa di Verona chicory seeds in May/June and transplant in July for fall harvest. Cut off all the leaves above the crown in early fall. It's the resulting new growth in cold weather that produces the characteristic small, compact, cabbage-like head. They can even be overwintered for spring harvest.
Mark Recommends: Even if you have to go to a farmers market and buy a radicchio, you must try them grilled. Pull off the outermost wrapper leaves, and then cut the head into quarters down the core. Drizzle each of these with olive oil and sprinkle with sea salt and fresh black pepper. Pop them on the barbecue, right over a medium flame. In only a couple of minutes they will soften and begin to scorch. Allow this to happen on all sides, and then serve them hot with some balsamic vinegar. The cooking brings out an incredibly sweet flavour and knocks back all that bitterness of the raw product. Summertime doesn't work without grilled radicchio!
Matures in 85 days. (Open-pollinated seeds)
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Latin
Latin
Cichorium endiva (endive) & C. intybus (radicchio)
Family: Asteraceae
Difficulty
Difficulty
Endive is easy.
Radicchio is moderately difficult.
Belgian endive (witloof) is downright challenging – but worth the effort.
Season & Zone
Season & Zone
Season: Cool season
Exposure: Full-sun
Timing
Timing
Sow after the last frost date and again in mid-summer to take advantage of the fall growing season. Optimal soil temperature: 10-22°C (50-72°F). Seeds sprout in 2-15 days, depending on conditions. In hot weather plants may go to seed quickly, so have new plantings ready to go.
Starting
Starting
Either direct seed or start indoors and transplant. Sow seeds 5mm (¼”) deep, and thin or transplant to allow 30-45cm (12-18″) between plants in rows 30-45cm (12-18″) apart.
Days to Maturity
Days to Maturity
From direct sowing.
Growing
Growing
Ideal pH: 6.0-6.5. Enrich soil with compost and add ¼ cup balanced organic fertilizer into the soil beneath each transplant. Rapid, continuous growth is essential for good yields and high quality. Regular watering is essential. Fall plantings can be protected from rain by putting a cloche over them. Endive heads can be blanched to reduce bitterness by placing a cardboard or plastic disc on top. Radicchio requires a good supply of phosphorus and potassium, but will not head and may bolt if there is too much nitrogen available. Days to maturity shown are from date of direct sowing. If transplanting, subtract 10-15 days.
Harvest
Harvest
Use as a cut and come again crop or let the heads develop and cut at ground level. Many will grow back.
Seed Info
Seed Info
In optimal conditions at least 65% of seeds will germinate. Usual seed life: 3 years. Per 100′ row: 140 seeds, per acre: 40.6M seeds.
Diseases & Pests
Diseases & Pests
Aphids – Water can be used to remove aphids from plants. Wash the plant off with water occasionally as needed early in the day.
Moulds and rot from heavy rains can be prevented by growing under cover. Tip burn is a calcium deficiency within the plant that can be caused by an imbalance with over nutrients. Make sure to add lime to the soil, do not over-fertilize, and harvest just before full maturity.
West Coast Seeds is a family-owned company that embraces an organic lifestyle. A group of imagination catalysts and passionate educators, dedicated to producing products and services that better the environment. As part of our mission to repair the earth, we aim to inspire and empower people to take responsibility for the state of the planet. For us, organic is about much more than saying no to chemicals, it is about saying yes to building a healthy soil for the future.
For over 35 years, we have upheld our strong reputation as a leading seed supplier, seeking out the highest quality untreated seeds for organic growing and putting them through rigorous independent testing. We built our company on the exchange of generational wisdom in a masterclass community of newbies and masters alike. Our world may have changed, but our commitment to our people, our customers, and our planet has not.
We’re a values-based business that has blossomed into a lifestyle ethos, with products that support seeders, feeders, keepers, and the tiniest of creepers. Our mission? To mobilize the next generation of gardeners with products that nourish soil and grow vigorous, sustainable gardens. We believe all plants should be grown without the use of chemicals, and that the seeds we supply are an important component of regenerative gardening.
We don’t just offer seeds, we offer experience, insight, and understanding. From timeless garden wisdom to new tech know-how, this is learning on the job: knowledge gleaned not from the pages of a book but from burying our fingers in the soil. We test, experiment, observe and adapt, never happier than when we get to share what we’ve learned with others.
Gardens don’t just grow seeds. They grow minds and imaginations, people and communities. Our vision encompasses both the micro and the macro. We eat locally, protect pollinators, teach people to grow from seed, and support regional biodiversity. We think big but act small and deliver unexpected impact — always with community and purpose.
At West Coast Seeds we believe in the power of small and that little can be large. Like the tiniest seed germinates to evoke incremental change with massive potential, so to can our community of gardeners and growers together. Gardeners are the earth’s stewards, planting seeds of creative declaration. The soil provides the canvas, we provide the seeds.
Sow after the last frost date and again in mid-summer to take advantage of the fall growing season. Optimal soil temperature: 10-22°C (50-72°F). Seeds sprout in 2-15 days, depending on conditions. In hot weather plants may go to seed quickly, so have new plantings ready to go.
Either direct seed or start indoors and transplant. Sow seeds 5mm (¼”) deep, and thin or transplant to allow 30-45cm (12-18″) between plants in rows 30-45cm (12-18″) apart.
Ideal pH: 6.0-6.5.
Enrich soil with compost and add ¼ cup balanced organic fertilizer into the soil beneath each transplant. Rapid, continuous growth is essential for good yields and high quality. Regular watering is essential.
Fall plantings can be protected from rain by putting a cloche over them. Endive heads can be blanched to reduce bitterness by placing a cardboard or plastic disc on top. Radicchio requires a good supply of phosphorus and potassium, but will not head and may bolt if there is too much nitrogen available. Days to maturity shown are from date of direct sowing. If transplanting, subtract 10-15 days.
Days to maturity: From direct sowing.
In optimal conditions at least 65% of seeds will germinate. Usual seed life: 3 years. Per 100′ row: 140 seeds, per acre: 40.6M seeds.
Use as a cut and come again crop or let the heads develop and cut at ground level. Many will grow back.
Moulds and rot from heavy rains can be prevented by growing under cover. Tip burn is a calcium deficiency within the plant that can be caused by an imbalance with over nutrients. Make sure to add lime to the soil, do not over-fertilize, and harvest just before full maturity.
