When to Plant Apple Tree in Castine, Maine (04421)

Location

Castine, Maine

ZIP Code

04421

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Saturday, March 14, 2026

Based on last frost Saturday, April 25, 2026 · Zone 5b

Pro tip: Sow Apple Tree directly outdoors 6 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Malus domestica

Days to Maturity 1460 days

Mature Height 48-240"

Spread 240"

Type Deciduous Tree

Fruit Size Large (3-4 inches)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

240" apart

Ready to Plant Apple Tree in Castine?

Get your seeds now so they're ready by Saturday, March 14, 2026.

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🤝 Good Companions

ChiveNasturtiumMarigoldComfrey

⚠️ Avoid Planting Near

WalnutFennel

🤝

Full Companion Planting Guide for Apple Tree

See which plants help Apple Tree thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌿 Fruit Tree Fertilizer 🕸️ Garden Netting 🚿 Watering Can

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🌾 Seed Saving Guide

🪴 Vegetative propagation

Propagate vegetatively, not by seed

Apple seeds do not grow true to variety — every seedling is genetically unique. Propagate by grafting onto rootstock.

Fun experiment: plant seeds to discover new varieties, but don't expect the parent apple.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 0 plants of Apple Tree. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Apple Tree in Castine, Maine? +

In Castine (Zone 5b), direct sow Apple Tree outdoors around Saturday, March 14, 2026.

What is the last frost date for Castine, Maine? +

The average last spring frost date for Castine, Maine (ZIP 04421) is around Saturday, April 25, 2026. This is based on NOAA climate normals for USDA Zone 5b.

How long does Apple Tree take to grow? +

Apple Tree typically matures in about 1460 days from direct sowing. In Castine, that means you can expect harvest around Saturday, March 14, 2026 plus 1460 days.

Should I start Apple Tree indoors or direct sow in Maine? +

Apple Tree does best when direct sown outdoors. In Castine, sow directly around Saturday, March 14, 2026.

📚 More Apple Tree Planting Guides

🗺️

Apple Tree in Maine

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 5b Apple Tree Guide

All cities in your zone · Avg dates

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Other Plants for Castine

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 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 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 Apple Tree in Zone 5b

Apple Tree (Malus domestica) is a popular garden vegetable. In Castine, Maine, which is in USDA Hardiness Zone 5b, you should direct sow seeds around Saturday, March 14, 2026.

Your average last frost date is Saturday, April 25, 2026. Apple Tree grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.