How to Grow Endive from Seed
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How to grow endive from seed depends on which endive you mean. Curly endive and escarole are both types of Cichorium endivia, bitter salad greens that suit cool weather. They handle heat better than lettuce, but they still bolt when short days and cool spells arrive, so timing decides whether you get a crisp head or a flowering stalk.
The quick answer comes first, then the steps: choosing the type, sowing for each season, seed depth and spacing, heat and bolting, fall growing, blanching and growing time. The sources are four publications, and one of them is a Florida commercial table, which the draft notes wherever it matters.
Quick answer
- For spring, direct-sow about 2 to 4 weeks before average last frost, or start indoors 6 to 8 weeks ahead, as Cornell suggests. For fall, sow 2 to 3 months before the expected frost.
- Plant seed about one quarter inch deep. The UF/IFAS table gives rows 18 to 30 inches apart and plants 14 to 16 inches apart for endive.
- Expect roughly 60 to 100 days from seed, depending on the source and the type, and keep the crop away from long hot spells.
- Blanch heading types for a milder flavor. A light frost in fall can also improve the taste.
Choose curly endive or escarole first
Curly endive has narrow, curly, dark green outer leaves around a creamy center. Escarole has broad, flatter leaves. NC State Extension says curly endive and escarole are both chicories of the same species. Oregon State adds that escarole has broad leaves and is less bitter than other types, which makes it the milder choice for salads.
Do not confuse garden endive with Belgian endive. Cornell says the two are different crops, even though they share a genus. Belgian endive is grown for its roots and forced tops. NC State also warns that endive can be mistaken for chicory or radicchio, so check the seed packet before you sow.
Site and soil
NC State says to grow endive after the danger of frost has passed, in full sun, in well-drained soil with a pH between 5.5 and 8.3 that still retains moisture. The same profile describes endive as a bitter salad green that is less well known in this country than in Europe. Cornell lists full sun and part shade as site options, and says partial shade is beneficial in hot weather.
Before you sow
- Pick curly endive or escarole, and check that the seed packet says which one you have.
- Match the sowing date to the window your climate allows, using the spring and fall guidance in this guide.
- Test the soil pH if you can, and aim for the range NC State gives, between 5.5 and 8.3.
- Plan how you will blanch before the heads reach harvest size, whether with a container or by tying the outer leaves.
Sow for each season
Timing is the main decision. Cornell gives three routes. It suggests direct-sowing in rows 18 inches apart two to four weeks before average last frost. For an extra-early crop, it says to start seed inside six to eight weeks before last frost, then transplant about two weeks before last frost. For fall harvests, it says to direct-seed about two to three months before the expected fall frost. Make succession plantings for a continuous harvest, so that you are not waiting on one large batch.
The UF/IFAS chapter gives a much longer calendar, which shows how much the window shifts with climate. Endive is planted from August to October and again from January to February in north Florida, from August to February in central Florida, and from September to March in south Florida. Those dates suit a mild climate, not most home gardens, so use them as a comparison rather than a rule.
| Source | Window the source gives |
|---|---|
| Cornell (home gardens) | Direct-sow 2 to 4 weeks before average last frost; fall crops 2 to 3 months before expected fall frost |
| UF/IFAS (north Florida) | August to October, and January to February |
| UF/IFAS (central Florida) | August to February |
| UF/IFAS (south Florida) | September to March |
Seedlings and transplants
Cornell’s endive guide treats direct sowing as the main route. Its indoor option is for an extra-early crop: start seed inside six to eight weeks before last frost, then transplant about two weeks before last frost. Once indoor seedlings move outside, the same bolting risk applies, so Cornell’s advice on shade and steady water in hot weather covers them too. The fetched pages give no spacing or hardening-off schedule for indoor starts.
Seed depth, rows and spacing
The UF/IFAS table lists a seeding depth of 0.25 inch for endive and escarole, row spacing of 18 to 30 inches, and plant spacing of 14 to 16 inches. Those are commercial planting figures, so a home bed can use the closer end of each range and still follow the depth. Cornell’s home-garden guide gives rows about 18 inches apart. For other crops that share a raised bed, see vegetables to plant in raised beds.
Spacing also affects blanching. Cornell notes that close plant spacing, about 8 inches, encourages self-blanching, which is covered in the blanching section below. A bed laid out with that spacing in mind saves work later in the season.
Heat, short days and bolting
Endive handles heat better than lettuce, according to NC State and Cornell, but the sources agree it has limits. NC State says endive grows best at 60 to 65 degrees, and that both types may bolt and flower with short days and cool weather. Cornell says endive needs short days and cool temperatures, and it advises looking for slow-bolting varieties for spring plantings. Cornell’s bolting advice is direct: keep plants well watered and shaded when temperatures are above 75 degrees Fahrenheit, and mulch to hold moisture and suppress weeds. The practical rule follows: sow so the crop finishes in cool weather, and do not plan a spring crop that will run into long hot days.
Fall and winter growing
Curly endive and some escarole types are good fall and winter crops, according to the Oregon State publication. They benefit from some protection as the weather gets colder. NC State says escarole can tolerate a mild frost once it is established. Cornell notes that a light fall frost enhances flavor. Plan the sowing date so the crop reaches size before cold weather sets in, and use cover on the coldest nights.
Taste and how to eat it
Endive and escarole lack the red pigments found in radicchio, so Oregon State says they are typically less bitter than radicchio. Their leaves are sturdier than lettuce, and the publication describes them as well suited to both raw and cooked dishes. Cooking mellows the flavor of both endive and escarole, and soaking cut leaves in ice water for at least 30 minutes reduces the bitter compounds. Blanching, covered next, is the other lever you control in the garden. Taste is a good reason to try both types, since a curly head and a broad escarole leaf can differ a great deal in the salad bowl.
Blanching for a milder flavor
Blanching reduces the bitterness of heading types. NC State says the natural bitterness may be reduced by blanching before harvest, and it describes covering each plant with a container to exclude light for several weeks. Cornell recommends blanching heading varieties for a milder flavor. It also says self-blanching varieties are available, and that close spacing encourages self-blanching. Oregon State adds that the inner blanched leaves of loose heads are much sweeter.
Blanching can also be done by hand. NC State describes pulling the outer leaves over the head and tying them in dry conditions to prevent inner leaf rotting. Dry weather matters because wet, tied leaves can rot inside the head. For eating, Oregon State suggests soaking cut leaves in ice water for at least 30 minutes to leach out the bitter compounds, and it notes that cooking also mellows the flavor.
Growing time and harvest
The two main sources give different growing times from seed. The UF/IFAS table lists 60 to 80 days to maturity for endive and escarole. NC State gives about 70 to 100 days of growth. The sources do not explain the gap. Plan for the longer figure when a frost date is close, and count back from the first expected cold snap when you choose a sowing date.
Mistakes to avoid
- Sowing a spring crop that runs into long hot days. NC State says endive grows best at 60 to 65 degrees.
- Confusing endive with Belgian endive. Cornell says the two are different crops.
- Skipping blanching when heads are bitter. NC State and Cornell both describe blanching for a milder flavor.
- Using the Florida calendar in a cold garden. The UF/IFAS table is written for Florida commercial production.
- Leaving the crop in hot, bare sun. Cornell says partial shade is beneficial in hot weather, and mulch helps hold moisture.
- Tying the leaves in wet weather. NC State ties the outer leaves in dry conditions to prevent inner leaf rotting.
How we chose
The guide draws on four publications, and it keeps the curly and escarole distinction because the sources keep it too. The UF/IFAS chapter gives commercial planting tables. The NC State Extension Gardener Plant Toolbox gives the species profile. The Cornell Vegetable Growing Guide gives home-garden sowing and blanching, and Oregon State’s winter vegetable publication covers fall and winter growing. Advice was kept when a fetched page stated it in plain words, and where the sources differed, both numbers are shown. Seed companies, variety names and product listings were left out, because the guide recommends no products. The UF/IFAS chapter also contains crop-protection tables, which this guide does not use. Each figure was checked against the text of its page on 2026-10-23.
What we could not verify
The four pages cover the core steps, but they leave gaps. The points below are not facts about endive, and they are the first things to check with a local expert.
What the sources do not say
No source gives one sowing date for every home garden, and the UF/IFAS dates describe Florida production. The two growing times differ, and no source explains why. The sources give no indoor seed-starting schedule for hot summers, and they do not say how many days a fall crop takes at a given latitude. The UF/IFAS chapter is a Florida commercial guide, and NC State gives no seed depth. Cornell’s thinning distance is cut off in the fetched text, so this guide gives no thinning distance. Pest and disease control is outside this guide, and no control product is recommended.
Frequently asked questions
Can endive be sown in summer?
Cornell’s guide times fall harvests by sowing two to three months before expected fall frost. NC State says endive grows best at 60 to 65 degrees, so a midsummer sowing may struggle with heat.
Is escarole the same as endive?
Escarole is a flat-leaved type of the same species. NC State says curly endive and escarole are both chicories of the same species, and Oregon State says escarole has broad leaves and is less bitter than other types.
Does frost hurt endive?
It depends on the type and the frost. NC State says escarole can tolerate a mild frost once it is established, and Cornell says a light fall frost enhances flavor. Oregon State says fall and winter types benefit from protection as the weather gets colder.
How long does endive take from seed?
The UF/IFAS table lists 60 to 80 days to maturity from seed for endive and escarole. NC State’s range runs from 70 to 100 days of growth. Plan for the longer figure when frost is close.
Should endive be blanched before harvest?
Cornell says heading types taste milder when they are blanched. NC State describes covering a plant with a container for several weeks, or tying the outer leaves over the head in dry weather. Self-blanching varieties are an option for gardeners who want less work.
Bottom line
Sow endive in cool weather, pick curly endive or escarole to suit your taste, and blanch heading types for a milder flavor. For bed planning, see preparing raised beds for winter, and for other crops that suit a raised bed, see easiest vegetables to grow in raised beds.
Sources
- https://ask.ifas.ufl.edu/publication/CV293 (opened 2026-10-23)
- https://plants.ces.ncsu.edu/plants/cichorium-endivia/ (opened 2026-10-23)
- http://www.gardening.cornell.edu/homegardening/scene79ad.html (opened 2026-10-23)
- https://extension.oregonstate.edu/sites/extd8/files/documents/pnw548.pdf (opened 2026-10-23)
