Endive varieties are divided mainly by leaf shape. Unlike the finely cut leaves of fris̩e, escarole has wider, flatter leaves. Both types grow in a rosette form around a center that can be blanched to increase sweetness and reduce the bitterness. Sow Broadleaf Batavian escarole seeds and bundle the tips of the outer leaves with an elastic band to cut off sunlight from the center. Or fix a plastic disc in place over the center of each plant.
Large, broad in shape, with slightly twisted, lettuce-like leaves form tightly packed heads with creamy white hearts. This bulky heirloom dates back to the 1860s, and simply begs to be tossed with bacon or croutons under a hot salad dressing.
Matures in 85 days. (Open-pollinated seeds)
How to Grow Endive & Radicchio
The chicory family includes the food plants endive and radicchio, which range 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! Follow along with this handy How to Grow Endive and Radicchio Guide and grow food.!
Cichorium endiva (endive) & C. intybus (radicchio)
Endive is easy.
Radicchio is moderately difficult.
Belgian endive (witloof) is downright challenging – but worth the effort!
We Recommend: Palla Rossa (MS491). If you are unfamiliar with radicchio, the time has come to try it! Those of us who know it love it, and look forward to the harvest time in summer and fall. Sugar Loaf (MS492) is an unusual endive that is very easy to grow, and absolutely delicious.
Season & Zone
Season: Cool season
Sow in April and again in early July to mid-August 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 will 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 tranplant 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 complete organic fertilizer into the soil beneath each transplant. Rapid, continuous growth is essential for good yields and high quality. Regular watering is essential. Fal lplantings can be protected from rain by putting a cloche over them. Endive heads can be blanched ro 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 maturityshown 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 you have limed the soil, do not over-fertilize and harvest just before full maturity to avoid it.
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