When to Plant Plum Tree in Grays River, Washington (98621)

Location

Grays River, Washington

ZIP Code

98621

USDA Zone

Last Frost

Sunday, March 15, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Sunday, February 1, 2026

Based on last frost Sunday, March 15, 2026 · Zone 8b

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

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🌿 Plant Details

Scientific Name Prunus domestica

Days to Maturity 1460 days

Mature Height 60-180"

Spread 150"

Type Deciduous Tree

Fruit Size Medium (1-2 inches)

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

180" apart

Ready to Plant Plum Tree in Grays River?

Get your seeds now so they're ready by Sunday, February 1, 2026.

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🤝 Good Companions

ComfreyChiveNasturtium

⚠️ Avoid Planting Near

WalnutFennel

🤝

Full Companion Planting Guide for Plum Tree

See which plants help Plum 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

Plum seeds do not grow true. Propagate by grafting for reliable fruit quality.

Remove flesh from pit, crack the outer shell, and cold-stratify for 3–4 months to germinate.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Plum Tree in Grays River, Washington? +

In Grays River (Zone 8b), direct sow Plum Tree outdoors around Sunday, February 1, 2026.

What is the last frost date for Grays River, Washington? +

The average last spring frost date for Grays River, Washington (ZIP 98621) is around Sunday, March 15, 2026. This is based on NOAA climate normals for USDA Zone 8b.

How long does Plum Tree take to grow? +

Plum Tree typically matures in about 1460 days from direct sowing. In Grays River, that means you can expect harvest around Sunday, February 1, 2026 plus 1460 days.

Should I start Plum Tree indoors or direct sow in Washington? +

Plum Tree does best when direct sown outdoors. In Grays River, sow directly around Sunday, February 1, 2026.

📚 More Plum Tree Planting Guides

🗺️

Plum Tree in Washington

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 8b Plum Tree Guide

All cities in your zone · Avg dates

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Other Plants for Grays River

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 Apple Tree Pear Tree Peach 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 Plum Tree in Zone 8b

Plum Tree (Prunus domestica) is a popular garden vegetable. In Grays River, Washington, which is in USDA Hardiness Zone 8b, you should direct sow seeds around Sunday, February 1, 2026.

Your average last frost date is Sunday, March 15, 2026. Plum Tree grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.