When to Plant Broccoli in Connecticut

🌱

Start Seeds Indoors

Wednesday, March 4, 2026

Transplant outdoors: Wednesday, April 15, 2026

Based on Avon · Zone 6b

Last frost: Wednesday, April 15, 2026

State

Connecticut

USDA Zones

6a, 6b, 7a, 7b

Avg Last Frost

Wednesday, April 15, 2026

Cities Covered

267

Connecticut Planting Schedule by Zone

Connecticut spans 4 zones — find yours below for the most accurate dates.

Zone	Last Frost	Start Indoors	Transplant	Example Cities
6a	Monday, April 20, 2026	Monday, March 9, 2026	Monday, April 20, 2026	Burlington, Canaan, Canton
6b	Wednesday, April 15, 2026	Wednesday, March 4, 2026	Wednesday, April 15, 2026	Avon, Bloomfield, Windsor
7a	Friday, April 10, 2026	Friday, February 27, 2026	Friday, April 10, 2026	Wethersfield, New London, East Lyme
7b	Sunday, April 5, 2026	Sunday, February 22, 2026	Sunday, April 5, 2026	Norwalk, Old Greenwich, Riverside

Dates based on average last frost. Check your local forecast before planting.

🌿 About Broccoli

Scientific Name Brassica oleracea var. italica

Days to Maturity 60 days

Plant Type Head

Sun Full Sun (6 hours)

Water Regular (1-1.5 inches/week)

Spacing 18" apart

🤝 Companion Plants for Broccoli

Good Companions

BeetCeleryOnionPotatoDill

Avoid Planting Near

TomatoStrawberryPepper

See the full companion planting guide for Broccoli →

Growing Broccoli in Connecticut: Complete Guide

Broccoli (Brassica oleracea var. italica) is a warm-season crop that needs a head start indoors before Connecticut's last frost. Most Connecticut gardeners begin seeds indoors around Wednesday, March 4, 2026 and move transplants outside around Wednesday, April 15, 2026, after the risk of frost has passed.

Because Connecticut stretches across 4 USDA hardiness zones (6a, 6b, 7a, 7b), planting windows can shift by as much as two to four weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 60 days to maturity, Broccoli needs the indoor head start that Connecticut's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Broccoli requires full sun (6 hours) and regular (1-1.5 inches/week) moisture. Most of Connecticut receives adequate sunlight during the growing season, though gardeners in humid eastern regions should watch for fungal issues and ensure good air circulation.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Connecticut.

Growing Broccoli in Connecticut: Local Tips

Climate-specific advice for Connecticut gardeners.

Fall crop is superior to spring

Northeast broccoli started in late June for a September–October harvest almost always outperforms spring crops; cool fall temperatures produce tighter, darker heads with better flavor.

Start spring transplants in late February

To beat summer heat, start seeds indoors in late February and transplant under row cover in early April — the goal is harvesting before daytime highs exceed 80°F.

Frequently Asked Questions

When should I plant Broccoli in Connecticut?

In Connecticut, start Broccoli seeds indoors around Wednesday, March 4, 2026 and transplant outdoors around Wednesday, April 15, 2026 after your last frost. Connecticut spans zones 6a–7b, so dates shift by 1–4 weeks depending on where you live.

What is the last frost date in Connecticut?

Connecticut spans 4 USDA zones (6a, 6b, 7a, 7b), so last frost dates vary by region. Burlington, Canaan, Canton (6a) sees frost until around Monday, April 20, 2026, while Norwalk, Old Greenwich, Riverside (7b) is frost-free much earlier.

How long does Broccoli take to grow in Connecticut?

Broccoli takes about 60 days from transplant (or direct sow) to harvest. Starting seeds indoors in Connecticut gives you a head start so plants are ready to go out after the last frost.

What USDA zones does Connecticut cover for Broccoli?

Connecticut includes zones 6a, 6b, 7a, 7b. Broccoli grows well across all of these zones with adjusted timing — use the zone table above to find the right dates for your part of the state.

Find Precise Dates for Your City

Select a city for exact planting dates based on local frost records.

Abington 6a Amston 6b Andover 6b Ansonia 6b Ashford 6b Avon 6b Ballouville 6b Baltic 6b Bantam 6a Beacon Falls 6b Bethany 6b Bethel 6b Bethlehem 6a Bloomfield 6b Bolton 6b Botsford 6b Bozrah 6b Branford 7a Bridgeport 7a Bridgewater 6b Bristol 6b Broad Brook 6b Brookfield 6b Brooklyn 6b Burlington 6a Canaan 6a Canterbury 6b Canton 6a Canton Center 6a Centerbrook 7a Central Village 6b Chaplin 6b Cheshire 6b Chester 6b Clinton 7a Cobalt 6b Colchester 6b Colebrook 6a Collinsville 6a Columbia 6b Cornwall 6a Cornwall Bridge 6a Cos Cob 7a Coventry 6b Cromwell 6b Danbury 6b Danielson 6b Darien 7a Dayville 6b Deep River 7a Derby 6b Durham 6b East Berlin 6b East Canaan 6a East Glastonbury 6b East Granby 6b East Haddam 6b East Hampton 6b East Hartford 6b East Hartland 6a +207 more cities

Other Plants for Connecticut

Blackberry Blueberry Raspberry Strawberry Basil Chamomile Chives Cilantro Dill Lavender Lemon Balm Marjoram Mint Oregano Parsley Rosemary Sage Tarragon Thyme Acorn Squash Artichoke Arugula Asparagus Beefsteak Tomato Beet Bell Pepper Bok Choy Brussels Sprout Butternut Squash Cabbage Cantaloupe Carrot Cauliflower Cayenne Pepper Celery Cherry Tomato Chili Pepper Collard Green Common Bean Cucumber Eggplant Endive Fennel Garlic Grape Tomato Green Bean Habanero Pepper Head Lettuce Heirloom Tomato Honeydew Melon Jalapeño Pepper Kale Kohlrabi Leaf Lettuce Leek Lima Bean Mustard Okra Onion Parsnip Pea Poblano Pepper Pole Pea Potato Pumpkin Radicchio Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini Sunflower Marigold Zinnia Nasturtium Cosmos Echinacea (Coneflower) Petunia Black-eyed Susan Apple Tree Pear Tree Peach Tree Plum Tree Sweet Cherry Tree Lemon Tree Borage Lemongrass Ginger Stevia Tomatillo Edamame Fava Bean Mâche Mizuna Sorrel Shishito Pepper Banana Pepper Watermelon Radish Napa Cabbage Popcorn Broccoli Raab Catnip Valerian Lemon Verbena Bee Balm Anise Lovage Chervil Summer Savory Dahlia Snapdragon Pansy Sweet Pea Morning Glory Hollyhock Larkspur Bachelor Button Columbine Impatiens Salvia (Annual) Sweet Alyssum Celosia Lupine Verbena Elderberry Grape Vine Red Currant Gooseberry Serviceberry Fig Tree Avocado Tree Persimmon Tree Olive Tree