How to Grow Endive and Escarole

Endive vs. Escarole: One Crop, Two Looks

Endive and escarole are both Cichorium endivia, a leafy chicory, and they are grown identically. What differs is the leaf: endive (often sold as frisee or curly endive) has finely cut, frilly, deeply curled leaves, while escarole has broad, wavy leaves that form a fuller, more lettuce-like head. Both carry the pleasant bitter edge that defines the chicory family, milder in the pale interior heart and stronger in the dark outer leaves.

That bitterness is the crop's defining management problem and its culinary point. Grown fast in cool weather, and optionally blanched before harvest, both crops give you tender, mildly bitter heads for salads (endive) and for both salads and cooking (escarole, which is the classic green for soups and braises).

When to Plant

These are cool-season crops that want to mature in cool weather. Mississippi State University Extension advises growing them like head lettuce: as transplants in spring, and by direct seeding in fall. The fall crop is the connoisseur's choice, because heads maturing as the weather cools are noticeably milder; UC's Sonoma County Master Gardeners note endive tolerates more heat while growing than lettuce, but matures faster in cool weather, which tempers the flavor.

For that fall-and-winter harvest in mild-winter climates, UC recommends sowing in late August through September, or starting seeds indoors 4 to 5 weeks earlier for transplanting. In cold-winter regions, count backward from your first fall frost using your variety's days to maturity (roughly 60-90 days per UC; 85-95 days for the varieties Mississippi State lists) so heads finish in the cool of autumn rather than the heat of summer.

Sun, Soil, and Water

Site endive and escarole as you would fine lettuce: an open, sunny bed in well-worked, well-drained soil enriched with organic matter so it holds steady moisture. Fertile ground matters because the goal is quick, unchecked growth; a checked, slow-growing chicory is a bitter one.

Water is the main lever you control after planting. Keep the soil evenly moist through the whole season; drought stress both toughens the leaves and concentrates bitterness. Mulch between plants to steady soil moisture and keep mud off the low-growing heads, which also helps at blanching time, when heads must be dry and clean.

Sowing and Spacing

UC's Sonoma County Master Gardeners give the working numbers: sow seed 1/4 to 1/2 inch deep, thin seedlings to 6-12 inches apart once they are 1-2 inches tall, and finish with plants 10-12 inches apart so heads have room to develop. Escarole, the broader-framed of the two, deserves the wide end of that range; frilly endive can sit slightly closer.

You can direct-sow or transplant. For transplants, UC suggests starting seed indoors 4 to 5 weeks before setting out. Somewhat close final spacing has a side benefit: crowded plants grow more upright and shade their own hearts, partially self-blanching, which gives you a head start on the flavor-mellowing step below.

Blanching for Milder Flavor

Blanching, excluding light from the heart for the last stretch before harvest, turns the center creamy yellow-white, tender, and far less bitter. It is optional but traditional, and it is the difference between rustic and restaurant-grade endive.

UC's method: wait until heads are full sized and completely dry, then pull the outer leaves up over the center and tie them about one third of the way down with string or a rubber band, keeping the head covered for 1 to 3 weeks before harvest. Working with wet heads or leaving them tied too long invites rot in the trapped interior, so blanch only a few heads at a time, timed to when you will actually eat them.

⚠ Only tie heads up when the foliage is completely dry, and check blanching heads after rain. A tied, wet endive heart can rot from the inside before you notice anything wrong.

Harvesting

Cut whole heads at the soil line with a sharp knife once they reach full size, at roughly 60-90 days from planting (UC), or per your variety: Mississippi State lists escarole 'Florida Deep Heart' at 85 days and curly endive 'Green Curled' at 95 days. If you blanched, harvest within the 1-3 week blanching window rather than leaving finished heads standing.

Cool-season timing pays off here: heads that mature in cool fall weather are the mildest of the year, and in mild climates a late-summer sowing can be cut right through late fall and winter (UC). Use the dark outer leaves for cooking and save the pale heart for salads. Refrigerate harvested heads promptly, and expect the flavor to be best fresh.

Common Problems

Endive and escarole share lettuce's problem list more than cabbage's: slugs and snails chewing seedlings and low outer leaves, aphids colonizing the crinkled foliage, and rots where leaves sit on wet soil. Space plants properly, water the soil rather than the heads, and mulch to keep leaves clean and dry; inspect and hand-pick slugs after rain.

The most common failure, though, is cultural, not pest-driven: heads that are unbearably bitter or that bolt to seed. Both trace to heat and stress, maturing in hot weather, dry spells, or overmature plants left standing. The fixes are all upstream: sow at the right time for a cool finish, keep water steady, blanch before harvest, and cut heads promptly when they size up.

Sources

Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.

• UC Master Gardener Program of Sonoma County — Endive and Radicchio — Sow 1/4-1/2 in deep; thin to 6-12 in apart when seedlings are 1-2 in tall, then to 10-12 in; 60-90 days to maturity; sow late August-September for late fall and winter harvest or start indoors 4-5 weeks earlier; blanch by tying outer leaves one third of the way down and excluding light 1-3 weeks; heads must be completely dry to avoid rot; endive tolerates more heat than lettuce but matures best in cool weather
• Mississippi State University Extension — Endive, Escarole — Cool-season vegetables grown like head lettuce, transplants in spring and direct seeding in fall; variety maturities: 'Florida Deep Heart' escarole 85 days, 'Green Curled' endive 95 days

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