New York’s short growing season calls for planting kale as soon as the soil is workable in spring. Knowing the best time to plant kale in new york can mean the difference between a bumper crop and a sad, bolted mess. You want tender leaves, not tough stems, and timing is everything.
Kale loves cool weather. It actually gets sweeter after a light frost. So in New York, you have two main windows: early spring and late summer for a fall harvest. Let’s break it down so you can get your hands dirty with confidence.
Best Time To Plant Kale In New York
The absolute best time to plant kale in New York is about 4 to 6 weeks before the last expected spring frost. For most of the state, that means late March to mid-April. But you can also plant in late July to early August for a fall crop that will last until Thanksgiving.
Kale seeds germinate in soil as cool as 40°F. That’s why you can push the season. Don’t wait for the ground to be perfect. If you can dig without mud clumping on your shovel, you’re good.
Spring Planting Window
For spring planting, aim for these dates based on your region:
- New York City and Long Island (Zone 7): Mid-March to early April
- Hudson Valley and lower Catskills (Zone 6): Late March to mid-April
- Capital District and Central NY (Zone 5): Early to mid-April
- Adirondacks and North Country (Zone 4): Late April to early May
Check your local frost dates. The last frost in NYC can be as early as March 20. In Buffalo, it might be May 10. Kale can handle a light freeze, so you can plant 2 weeks before that last frost date.
Fall Planting Window
Fall kale is often better than spring kale. The cold brings out the sweetness. For a fall harvest, plant 6 to 8 weeks before the first fall frost. In New York, that’s usually:
- Zone 7: Late August to early September
- Zone 6: Mid to late August
- Zone 5: Early to mid-August
- Zone 4: Late July to early August
Fall kale can survive under snow. You can harvest it well into December if you mulch around the plants. That’s a real treat for winter salads.
How To Plant Kale For Success
You’ve got the timing down. Now let’s talk about the actual planting. Kale is easy, but a few tricks make it thrive.
Choose The Right Variety
Not all kale is the same. For New York’s climate, pick varieties that handle cold and heat stress:
- Winterbor: Very cold hardy, great for fall
- Red Russian: Tender leaves, good for spring
- Lacinato (Dinosaur): Classic flavor, heat tolerant
- Starbor: Compact, good for small spaces
For spring planting, choose faster-maturing varieties. For fall, go with the cold-hardy ones.
Prepare The Soil
Kale likes rich, well-drained soil with a pH between 6.0 and 7.5. Before planting:
- Clear weeds and rocks from the bed
- Mix in 2 inches of compost or aged manure
- Add a balanced fertilizer like 10-10-10
- Rake the soil smooth
If your soil is heavy clay, consider raised beds. Kale roots need room to grow, and clay can stunt them.
Planting Seeds Or Transplants
You have two options: seeds or transplants. Seeds are cheaper and give you more variety. Transplants give you a head start.
For seeds:
- Sow 1/2 inch deep, 1 inch apart
- Rows should be 18 inches apart
- Water gently after planting
- Thin seedlings to 12 inches apart once they have 4 leaves
For transplants:
- Dig holes 12 inches apart
- Plant at the same depth as the pot
- Water well after transplanting
- Use row covers if a hard freeze is forecast
Transplants are great for spring because you can start them indoors 4 weeks before planting out. That gives you a jump on the season.
Caring For Your Kale Plants
Once your kale is in the ground, it needs consistent care. Here’s what to do.
Watering
Kale needs about 1 to 1.5 inches of water per week. In dry spells, water deeply once or twice a week. Mulch around the plants to keep the soil moist and cool.
Don’t let the soil dry out completely. That stresses the plants and makes the leaves tough. But also don’t overwater. Wet roots can rot.
Fertilizing
Kale is a heavy feeder. About 3 weeks after planting, side-dress with a nitrogen-rich fertilizer. You can use:
- Fish emulsion
- Blood meal
- Compost tea
Repeat every 4 weeks during the growing season. Stop fertilizing in late summer for fall crops so the plants harden off for winter.
Pest Control
Cabbage worms and aphids love kale. Check the undersides of leaves regularly. You can:
- Handpick caterpillars
- Use row covers to keep butterflies away
- Spray with neem oil for aphids
- Encourage beneficial insects like ladybugs
If you see holes in the leaves, act fast. A small infestation can become a big problem in a week.
Harvesting Kale At The Right Time
You can start harvesting baby kale leaves about 30 days after planting. For full-sized leaves, wait 60 to 75 days. The key is to pick from the bottom up.
Harvest the outer leaves first, leaving the inner rosette to keep growing. This way, you get a continuous harvest for weeks. Never take more than one-third of the plant at once.
For spring-planted kale, harvest before the weather gets hot. Once temperatures hit 80°F, the leaves become bitter. For fall kale, wait until after a frost for the sweetest flavor.
Extending The Season
New York’s climate can be tricky, but you can stretch your kale harvest with a few tricks.
Use Row Covers
Floating row covers protect kale from frost and pests. They let in light and water but keep the temperature a few degrees warmer. Use them in early spring and late fall.
Cold Frames
A cold frame is a simple box with a glass or plastic lid. It can keep kale growing into December or even January. Just open the lid on warm days to prevent overheating.
Mulch Heavily
Before a hard freeze, pile straw or leaves around the base of the plants. This insulates the roots and keeps the soil from freezing solid. You can then harvest even when there’s snow on the ground.
Common Mistakes To Avoid
Even experienced gardeners make mistakes. Here are the most common ones with kale in New York.
- Planting too late in spring: Kale bolts when it gets hot. If you plant in May, you’ll get a short harvest.
- Planting too early in fall: If you plant in September, the kale might not mature before the first hard freeze.
- Overcrowding: Kale needs space. Crowded plants produce small, tough leaves.
- Not thinning seedlings: You have to thin them. It feels wasteful, but it’s necessary.
- Ignoring pests: A few cabbage worms can strip a plant overnight. Check daily.
Another mistake is forgetting to harden off transplants. If you move seedlings straight from indoors to the garden, they’ll get shocked. Gradually expose them to outdoor conditions over a week.
Regional Variations Within New York
New York is a big state. The best time to plant kale in New York City is different from the best time in Plattsburgh. Here’s a quick breakdown by region.
New York City And Long Island
These areas are in Zone 7. The growing season is longer. You can plant kale as early as mid-March for spring and as late as early September for fall. The mild winters mean you might even get a winter harvest with protection.
Hudson Valley And Lower Catskills
Zone 6. Spring planting in late March to early April. Fall planting in mid to late August. The valley can have late frosts, so watch the forecast.
Central New York And Finger Lakes
Zone 5. Spring planting in early to mid-April. Fall planting in early to mid-August. The lake effect can moderate temperatures near the lakes, giving you a slightly longer season.
Western New York (Buffalo, Rochester)
Zone 5 or 6. Spring planting in mid-April. Fall planting in mid-August. Lake effect snow can come early, so don’t delay fall planting.
Adirondacks And North Country
Zone 4. Spring planting in late April to early May. Fall planting in late July to early August. The season is short, so use transplants and row covers.
Frequently Asked Questions
Can I plant kale in the summer in New York?
It’s not ideal. Summer heat makes kale bitter and tough. If you must, plant heat-tolerant varieties like Lacinato and provide shade cloth. But spring and fall are much better.
How late can I plant kale in New York for fall harvest?
In most of the state, you can plant until mid-August. In warmer areas like NYC, you can push to early September. The key is to give the plants 6 to 8 weeks before the first hard freeze.
Do I need to start kale indoors?
Not necessary, but it helps. Starting indoors gives you a 4-week head start. For spring, it’s useful in colder regions. For fall, direct sowing is fine.
Can kale survive winter in New York?
Yes, with protection. Kale can survive temperatures down to 10°F if mulched well. In milder winters, it might keep growing. In harsh winters, it goes dormant but revives in spring.
What happens if I plant kale too early?
If the soil is too cold, seeds may rot. If a hard freeze hits young plants, they might die. But kale is tough. A light frost won’t hurt it. Just wait until the soil is workable.
Final Tips For Success
Kale is one of the easiest crops for New York gardeners. It’s forgiving, nutritious, and delicious. The best time to plant kale in New York is early spring for a summer harvest and late summer for a fall harvest. Stick to those windows, and you’ll have plenty of greens.
Remember to water consistently, watch for pests, and harvest from the bottom up. With a little care, you’ll be eating homegrown kale from May through December. That’s a long season for a cold climate.
So get your seeds or transplants ready. Mark your calendar for the right planting dates. And enjoy the satisfaction of growing your own food in New York’s challenging but rewarding climate.