Sugar Loaf chicory seeds grow like an upright, tightly headed, very large Romaine lettuce. Beneath the outer, pale-green, mild tasting leaves lies a blanched heart of sweet, pale-golden white leaves with extraordinary flavour. Sugar Loaf is perfect for late summer and fall harvests. We recommend pulling off a few of the enormous wrapper leaves and then lying the cylindrical core on its side and slicing across like a loaf of bread. Try a salad of Sugar Loaf with a hot oil dressing and croutons. Officially this endive is an escarole type. It's an old heirloom variety that sometimes goes by its French handle, Pain de Sucre.
Matures in 80-90 days. (Open-pollinated seeds)
The chicory family includes the food plants endive and radicchio, which range widely in shape, and in flavour from bitter to sweet. All varieties become sweeter, and lose much of their bitterness, when cooked. Try a hot oil salad dressing over endive, or a barbecued head of radicchio. Continue reading below for tips on how to grow endive and radicchio from seed.
Cichorium endiva (endive) & C. intybus (radicchio)
Endive is easy.
Radicchio is moderately difficult.
Belgian endive (witloof) is downright challenging – but worth the effort.
Season & Zone
Season: Cool season
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.
Days to Maturity
From direct sowing.
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.
Use as a cut and come again crop or let the heads develop and cut at ground level. Many will grow back.
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
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.