Harvest guide
When to Harvest Kale (Signs It's Ready)
Kale is ready about 50 to 65 days after sowing for full leaves, or about 25 to 30 days for baby leaves. Pick the outer leaves from the bottom up, leave the central bud, and the plant keeps producing for months.
The short answer
Kale is ready about 50 to 65 days after sowing for full leaves, or about 25 to 30 days for baby leaves. Pick once a plant has 8 to 10 leaves and the outer ones are roughly the size of your hand. Take the outer leaves from the bottom up and leave the central bud, so the plant keeps producing for months. A frost makes it sweeter.
The harvest window above comes from the days-to-maturity range for kale. The rest of this guide is how to read the cues, pick the leaves the right way, and stretch the season into winter.
Days to maturity: baby vs full leaves
Kale gives you two harvests off one planting. You can cut small, tender baby leaves early for salads, or wait for full leaves to cook.
NC State Extension puts baby greens at 20 to 30 days after seeding and mature leaves at 50 to 75 days. Clemson Extension lists mature leaves at 50 to 70 days, with immature leaves around 30 days. Together that puts your full-leaf window at roughly 50 to 65 days for most home varieties.
| Stage | Days after sowing | Use |
|---|---|---|
| Baby leaves | 25–30 | Raw in salads, tender and mild |
| Full leaves | 50–65 | Cooking, sautéing, kale chips |
| Mature (variety high end) | up to 75 | Bigger, sturdier leaves for braising |
Your seed packet's day count is the start of the window, not the finish. Kale is forgiving, so a few extra days will not ruin it.
How to tell it's ready
The calendar gets you close. The leaves tell you the truth.
Check three things before you pick:
- Leaf count. Wait until the plant has 8 to 10 leaves. That means it has enough mass to keep growing after you take a few.
- Leaf size. The outer leaves should be about the size of your hand. Oregon State Extension suggests removing the outer leaves while they are tender and no more than 8 inches long.
- Firm, not yellowed. Pick deep green, firm leaves. Yellowed or limp outer leaves have sat too long and turned tough and bitter.
If you only want salad leaves, you can ignore the size rule and pick baby kale young. NC State Extension notes you can harvest baby greens from about 20 to 30 days.
How to harvest kale
Pick the outer leaves, never the center. This is the whole trick to a plant that keeps giving.
Clemson Extension calls this the cut-and-come-again method, removing the outermost leaves and leaving the center of the plant to keep growing.
Here is the routine:
- Start at the bottom. The lowest, oldest leaves are the largest and the first to go tough. Take those first and work up.
- Snap or cut at the base. Pull each leaf down and to the side until it snaps off the stalk, or cut it close to the main stem with scissors. Oregon State Extension says to clip or twist the base of the leaves close to the stalk.
- Leave the central bud. Keep the small inner leaves and the growing point at the top of the plant, about 4 inner leaves, untouched. That is where new growth comes from.
- Take a third at most. Pick a fistful of outer leaves at a time, no more than about one-third of the plant, so it bounces back fast.
Do this every week or so and one row of kale feeds you for months.
Common mistake
Two mistakes kill a kale harvest. Cutting the central bud or the whole plant removes the growing point, so it cannot regrow. (UMN Extension notes you can cut the whole plant off at the soil line, but only do that when you are done with it for good.) The other mistake is leaving the outer leaves too long so they turn old, tough, and bitter. Pick the bottom leaves on a schedule before they age out.
Frost makes it sweeter, so harvest into winter
Kale is the rare crop that gets better as it gets colder. Do not rush to clear it before the first frost.
Clemson Extension says kale can withstand frost, and colder temperatures sweeten the leaves, which makes fall crops especially flavorful. Oregon State Extension agrees that cold weather improves the flavor and suggests harvesting after a frost for best taste. As temperatures drop, the plant moves more sugar into its leaves.
The plant keeps going, too. UMN Extension says kale is cold tolerant and will continue to grow and produce new leaves well beyond the first fall frosts, and that even after they have frozen, you can harvest and cook the leaves straight from the garden. A row cover or cold frame pushes that window further into winter.
For storage, eat it fresh. Oregon State Extension keeps kale in an open or perforated plastic bag for 5 to 7 days in the refrigerator. Got more than you can use? UMN Extension says freezing is an option for an abundant crop.
Pro tip
Two habits make kale better. Wait for a frost before the fall harvest and the leaves turn noticeably sweeter, free of charge. And always pick from the bottom up, taking the oldest outer leaves first. That keeps the plant tidy, stops the lower leaves from going bitter, and leaves the tender center growing.
Get the spacing right next time
Crowded kale grows small and bolts faster, so the plants never reach a clean 8-to-10-leaf size. Give each plant room and it stays productive far longer.
For full-size leaves, kale wants roughly 18 inches apart. For baby-leaf cutting, you can pack it closer, around 4 to 6 inches. The plant spacing chart has the full crop list, and the Plant Spacing Calculator shows how many plants fit your bed.
Try it — Plant Spacing Calculator
Full calculatorExtra to cover losses (10% is typical).
You can plant
32plants
- Per row
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- Buy (incl. spare)
- 36 plants
Kale is one of several cut-and-come-again greens. The same outer-leaf rule keeps when to harvest spinach producing, too.
Your next step
Kale is ready around 50 to 65 days for full leaves, or 25 to 30 days for baby leaves, once a plant has 8 to 10 leaves and the outer ones are hand-sized. Pick from the bottom up, leave the central bud, and let a frost sweeten the fall crop.
Planting the next round? Open the Plant Spacing Calculator and set your kale spacing so each plant has room to keep giving.
Common questions
How do I know when kale is ready to pick?
Kale is ready once the plant has 8 to 10 leaves and the outer ones are roughly the size of your hand. That lands around 50 to 65 days after sowing for full leaves. NC State Extension puts mature leaves at 50 to 75 days. If you want salad-size leaves sooner, pick baby kale around 25 to 30 days.
Should I cut the whole kale plant or just the leaves?
Just the outer leaves. Clemson Extension describes a cut-and-come-again method, removing the outermost leaves and leaving the center of the plant to keep growing. Snap or cut the lowest leaves at the base, leave the central bud and a few inner leaves, and the plant regrows for months.
Does kale taste better after a frost?
Yes. Clemson Extension says kale can withstand frost and that colder temperatures sweeten the leaves. Oregon State Extension agrees that cold weather improves the flavor. As temperatures drop, the plant stores more sugar in its leaves, so fall and early-winter kale tastes sweeter than summer kale.
Can you leave kale in the garden over winter?
In many areas, yes. UMN Extension says kale is cold tolerant and keeps producing new leaves well beyond the first fall frosts, and that even after the leaves freeze you can harvest and cook them straight from the garden. A row cover or cold frame extends the picking further into winter.
How long does harvested kale keep?
Not long, so eat it fresh. Oregon State Extension stores kale in an open or perforated plastic bag in the refrigerator for 5 to 7 days. For a big crop, UMN Extension notes that freezing is an option once you have more than you can eat.
Sources
Agronomic claims in this guide are checked against these primary sources.
- Kale — NC State Extension Publications
- Arugula, Kale, Mesclun, Mustard, and Swiss Chard — Clemson Cooperative Extension Home & Garden Information Center
- Growing collards and kale in home gardens — University of Minnesota Extension
- Kale — Oregon State University Extension Service
Keep reading
When to Harvest Spinach (Signs It's Ready)
Spinach is ready about 37 to 50 days after sowing, once a plant has five or six leaves that are 3 to 6 inches long. Pick the outer leaves or cut the whole plant above the crown, and harvest before it bolts in heat.
Read →When to Harvest Lettuce (Leaf + Head Types)
Lettuce is ready about 30 to 60 days after sowing. Pick the outer leaves of leaf types as soon as they are 3 to 4 inches, and cut head types when they are full and firm. Here are the cues, the cut-and-come-again trick, and how to beat the bolt.
Read →When to Harvest Broccoli (Signs It's Ready)
Broccoli is ready about 60 to 90 days after planting, when the central head is 4 to 7 inches across with tight, dark-green buds, before any open to yellow. Here are the cues, the cut, and the weeks of side shoots that follow.
Read →When to Plant Zucchini (Frost + Soil Temp Timing)
Plant zucchini after your last spring frost, once the soil hits at least 60 F (ideally 65 to 70 F). Direct-sow seeds 1/2 to 1 inch deep, or set out transplants started 2 to 4 weeks earlier. Warm zones get a second fall crop.
Read →When to Plant Tomatoes (Frost + Soil Temp by Zone)
Set tomato transplants out 1 to 2 weeks after your last spring frost, once soil hits at least 60 F. Start seeds indoors 6 to 8 weeks before that frost date. Cold soil stalls them, so wait for warmth.
Read →When to Plant Swiss Chard (Spring and Fall Timing)
Plant swiss chard 2 to 4 weeks before your last spring frost, once the soil hits 40°F. Sow again 3 to 4 weeks before the first fall frost. Seeds go half an inch to an inch deep.
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