When to Plant Sweet Potato in West Richland, Washington (99353)
Location
West Richland, Washington
ZIP Code
99353
USDA Zone
7b
Last Frost
Sunday, April 5, 2026
📅 Planting Calendar
Direct Sow Outdoors Sunday, February 22, 2026
Pro Tip: Sweet Potato can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Ipomoea batatas
Days to Maturity 100 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
Other Plants for West Richland
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 Brussel 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 Swiss Chard Tomato Turnip Watermelon Zucchini
Growing Sweet Potato in Zone 7b
Sweet Potato (Ipomoea batatas) is a popular garden vegetable. In West Richland, Washington, which is in USDA Hardiness Zone 7b, you should direct sow seeds around Sunday, February 22, 2026.
Your average last frost date is Sunday, April 5, 2026. Sweet Potato grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.