When to Plant Blackberry in Alexandria Bay, New York (13607)

Location

Alexandria Bay, New York

ZIP Code

13607

USDA Zone

Last Frost

Sunday, May 10, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Sunday, April 12, 2026

Based on last frost Sunday, May 10, 2026 · Zone 5a

Pro tip: Sow Blackberry directly outdoors 4 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Rubus fruticosus

Days to Maturity 365 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

Ready to Plant Blackberry in Alexandria Bay?

Get your seeds now so they're ready by Sunday, April 12, 2026.

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🛠️ Supplies You'll Need

🌿 Fruit Tree Fertilizer 🕸️ Garden Netting 🚿 Watering Can

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Common Blackberry Varieties

Popular cultivars to look for at your local nursery or seed supplier.

Triple Crown

thornless 60d

Thornless semi-erect variety with very large, sweet berries and outstanding flavor.

Chester

thornless

Thornless trailing variety with good cold hardiness and excellent disease resistance.

Navaho

thornless

Upright thornless variety with small but intensely sweet berries; no trellising needed.

Prime-Ark Freedom

primocane

First thornless primocane-fruiting blackberry, producing in summer and fall.

🌾 Seed Saving Guide

🪴 Vegetative propagation

Propagate vegetatively, not by seed

Propagate by root cuttings or tip layering — seeds rarely grow true to variety.

Tip layering in late summer is the easiest method: bend a long cane to the ground, bury the tip, and sever once rooted.

Frequently Asked Questions

When should I plant Blackberry in Alexandria Bay, New York? +

In Alexandria Bay (Zone 5a), direct sow Blackberry outdoors around Sunday, April 12, 2026.

What is the last frost date for Alexandria Bay, New York? +

The average last spring frost date for Alexandria Bay, New York (ZIP 13607) is around Sunday, May 10, 2026. This is based on NOAA climate normals for USDA Zone 5a.

How long does Blackberry take to grow? +

Blackberry typically matures in about 365 days from direct sowing. In Alexandria Bay, that means you can expect harvest around Sunday, April 12, 2026 plus 365 days.

Should I start Blackberry indoors or direct sow in New York? +

Blackberry does best when direct sown outdoors. In Alexandria Bay, sow directly around Sunday, April 12, 2026.

📚 More Blackberry Planting Guides

🗺️

Blackberry in New York

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 5a Blackberry Guide

All cities in your zone · Avg dates

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Other Plants for Alexandria Bay

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 Broccoli 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

Growing Blackberry in Zone 5a

Blackberry (Rubus fruticosus) is a popular garden vegetable. In Alexandria Bay, New York, which is in USDA Hardiness Zone 5a, you should direct sow seeds around Sunday, April 12, 2026.

Your average last frost date is Sunday, May 10, 2026. Blackberry grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.