When to Plant Vegetables in the Rogue Valley

When to Plant Vegetables in the Rogue Valley—A Full Year-Round Planting Calendar

One of the first things I did when I moved into my new home here in Grants Pass was sit down and try to figure out when to plant vegetables in the Rogue Valley. I’ve been gardening for decades, but the Rogue Valley has its own rhythm—a longer, warmer growing season than most of the Pacific Northwest, with hot, dry summers, mild winters, and a last frost date that comes earlier than you might expect.

Getting the timing right makes an enormous difference. Plant too early and a late frost sets you back weeks. Plant too late and you miss the window for a full harvest before the heat of summer arrives. Plant at exactly the right time, and the Rogue Valley rewards you generously—this is one of the most productive vegetable gardening climates in the entire Pacific Northwest.

Here is the full year-round planting calendar I’ve put together for Grants Pass and the broader Rogue Valley, based on our Zone 8b climate, our average last frost date of mid-April, and our first fall frost date of late October to early November.

Understanding the Rogue Valley Climate

Before diving into the calendar, it helps to understand what makes the Rogue Valley unique among Pacific Northwest growing regions.

We sit in a broad inland valley surrounded by mountain ranges—the Siskiyous to the south, the Cascades to the east, and the Coast Range to the west. This geography gives us a protected, semi-arid climate that is significantly warmer and sunnier than coastal Oregon or the Puget Sound region. Our summers are long, hot, and dry—ideal for heat-loving crops like tomatoes, peppers, melons, and corn that struggle in cooler PNW climates. Our winters are mild by Oregon standards, with temperatures rarely dropping below the mid-twenties, which means cool-season crops can often be grown nearly year-round with minimal protection.

Average last frost: mid-April (though late March frosts are possible in low-lying areas) Average first fall frost: late October to early November Growing season: approximately 180 to 200 days—one of the longest in Oregon USDA Hardiness Zone: 8b

If you’re in Medford, Ashland, Jacksonville, or Central Point, the timing in this calendar applies to you as well—our valley shares broadly similar conditions throughout, with some variation based on elevation and proximity to cold air drainage areas.

January—Planning and Preparation

January in the Rogue Valley is garden planning season. Temperatures are cool and frost is possible, but our mild winters mean the ground rarely freezes solid, and there are things worth doing even now.

Indoors: Order your seeds for the season. January is the best time to browse seed catalogs and place orders before popular varieties sell out. Territorial Seed Company in Cottage Grove, Oregon, is my first stop every year—their selection is tailored to Pacific Northwest conditions, and their organic and heirloom offerings are excellent.

In the garden: This is a good time to amend and prepare beds with compost, turn existing compost piles, and clean up any remaining debris from last season. Garlic planted in fall should be showing green shoots—leave it alone and let it grow.

What you can start indoors: Onions and leeks can be started from seed indoors in late January. They need a long growing season, and an early start gives them the best possible head start.

February—Early Indoor Seed Starting

February is when the gardening year genuinely begins in the Rogue Valley. Days are lengthening noticeably, and soil temperatures are slowly climbing.

Start indoors: Peppers should be started indoors in early to mid-February—they need the longest lead time of any common vegetable, typically 10 to 12 weeks before transplanting outdoors. Onions and leeks if not started in January. Celery and celeriac if you’re growing them. Artichokes benefit from an early February start.

Direct sow outdoors: In mild years, peas can be direct sown outdoors in late February in the Rogue Valley—our relatively mild winters mean the soil is often workable earlier than in most of Oregon. Spinach and mâche can also be direct sown outdoors under a light frost cloth if temperatures threaten.

Watch for: Late February can still deliver hard frosts, especially in low-lying areas of the valley. Don’t get overconfident—protect any outdoor plantings with frost cloth when temperatures are forecast below 28°F.

March—Cool Season Crops Hit the Ground

March is one of the most exciting months in the Rogue Valley garden. The risk of hard frost is declining, soil temperatures are rising, and a wide range of cool-season crops can go directly into the ground.

Direct sow outdoors: lettuce, spinach, arugula, and other salad greens. Radishes—they’ll be ready to harvest in as little as 25 days. Carrots and beets. Turnips and kohlrabi. Swiss chard. Peas if not already planted. Kale and other brassica greens.

Start indoors: Tomatoes should be started indoors in mid to late March—six to eight weeks before their mid-May outdoor transplant date. Basil can be started indoors in late March. Cucumbers and squash can be started indoors in late March if you want a head start, though they also do well direct sown in late April.

Transplant outdoors: Onion and leek seedlings started in January and February can be transplanted outdoors in March under frost cloth protection. Broccoli, cauliflower, and cabbage transplants can go out in mid to late March with frost cloth protection available.

April—The Last Frost Window

April is the month that requires the most attention in the Rogue Valley garden. Our average last frost is mid-April, but frost can occur any time through the end of the month and occasionally into early May in low-lying areas.

Direct sow outdoors: Continue sowing lettuce, salad greens, radishes, carrots, and beets through April. Plant potatoes in early to mid-April—they can handle light frost, and our valley soil warms up nicely for them. Direct sow peas if not already in the ground.

After mid-April: Once you’re past your local last frost date, or once you have a reliable ten-day forecast showing no frost, you can begin hardening off your indoor seedlings and preparing for warm-season planting. Harden off tomatoes, peppers, and basil by bringing them outside for increasing periods each day for a week before transplanting.

Watch for the classic Rogue Valley trap—a warm spell in early April followed by a hard frost in mid-April. It happens most years. Keep frost cloth handy through the entire month and check forecasts regularly.

May—Warm Season Planting Begins

May is the month most Rogue Valley gardeners look forward to most. Frost risk drops dramatically after mid-May, and the long warm season ahead makes this one of the best planting windows of the year.

Transplant outdoors after mid-May: Tomatoes—this is the moment. Plant them deep, burying two-thirds of the stem, and stake or cage immediately. Peppers—they love our hot summers and will reward a mid-May planting generously. Basil—plant it near your tomatoes and let the partnership begin. Eggplant thrives in our summer heat and goes out now.

Direct sow outdoors: Green beans—direct sow after mid-May for fast, reliable germination in warm soil. Zucchini and summer squash. Cucumbers. Corn, if you’re growing it—the Rogue Valley’s long, warm summers are ideal for corn, and it does beautifully here.

Continue sowing: Succession sow lettuce and salad greens through mid-May before summer heat arrives. A final sowing of carrots and beets in early May will mature through summer.

June — Summer Garden in Full Swing

By June the Rogue Valley garden is in full production mode. Cool-season crops are finishing up, and warm-season crops are establishing and beginning to grow rapidly in our long sunny days.

Direct sow: A second planting of green beans in early June extends your harvest by four to six weeks. Winter squash and pumpkins should go in by mid-June at the latest—they need the full summer to develop. Melons and watermelons can be directly sown in early June in the Rogue Valley—our long, hot summers are one of the few places in the Pacific Northwest warm enough to ripen them reliably.

Harvest: The first lettuce, radishes, spinach, and salad greens of the season. Peas should be producing well by late June—harvest them regularly to keep plants productive.

Water management: June marks the beginning of our dry season. Establish a consistent deep watering schedule now—two to three times per week for most vegetables—and consider setting up drip irrigation if you haven’t already.

July — Peak Summer Production

July in the Rogue Valley is hot, dry, and glorious for the garden. Temperatures regularly reach the 90s and occasionally higher, which is exactly what tomatoes, peppers, eggplant, cucumbers, and melons love.

Watch for: First tomato harvest—depending on variety, Rogue Valley gardeners often pick their first cherry tomatoes in late July. That first Sweet 100 or Sungold of the season is one of the best moments in the gardening year.

Direct sow: A third succession planting of green beans in early July keeps the harvest coming through September. Quick-maturing summer crops like radishes and some lettuce varieties can be sown in partial shade for a mid-summer harvest.

Maintenance: Water deeply and consistently. Mulch around all plants to conserve moisture and keep soil temperatures stable. Watch for tomato hornworms—check the undersides of tomato leaves every few days and hand-pick immediately. Side-dress heavy feeders like tomatoes, corn, and squash with compost.

August—Harvest Season and Fall Planting Begins

August is simultaneously the peak of summer harvest and the beginning of fall planting planning—two things happening at once that make it one of the busiest months in the Rogue Valley garden.

Harvest: Tomatoes, peppers, cucumbers, zucchini, beans, corn, and herbs should all be producing abundantly. Preserve excess harvests by canning, freezing, or drying while produce is at peak quality.

Start fall plantings: In mid- to late August, begin direct sowing cool-season crops for fall harvest—lettuce, spinach, arugula, radishes, and Asian greens all do well started now and will mature through September and October before frost arrives. Start broccoli, kale, and cabbage transplants indoors in mid-August for September outdoor planting.

September—Fall Garden Comes Into Its Own

September brings cooler nights and relief from summer heat, and the Rogue Valley fall garden is one of its most underappreciated pleasures.

Transplant outdoors: Broccoli, kale, cabbage, and cauliflower transplants started in August go out in early September. They’ll mature before our first fall frost and produce some of the best-flavored brassicas of the year—cool weather intensifies and sweetens their flavor significantly.

Direct sow: Continue succession sowing lettuce, spinach, arugula, and radishes through September. Garlic should be planted in mid to late September in the Rogue Valley—it overwinters in the ground and produces one of the most satisfying harvests of the following summer.

Harvest: Continue harvesting tomatoes, peppers, and warm-season crops. Green bell peppers left on the plant will begin turning red in September’s cooler nights—worth the wait.

October—Final Harvests and Winter Preparation

October brings our first frost risk—typically late October in most of the Rogue Valley—and with it the transition from summer to winter garden management.

Harvest before frost: Bring in green tomatoes before the first hard frost—they will ripen slowly indoors over several weeks and are far better than wasting the harvest. Harvest winter squash and pumpkins when stems begin to dry and cork. Dig potatoes if not already done.

Protect what you can: Hardy greens—kale, chard, arugula, spinach, and mâche—can survive Rogue Valley winters with light frost cloth protection. Cover them when frost is forecast, and they’ll often produce right through to spring.

Plant for winter: garlic if not already planted. Overwintering onion varieties. Hardy cover crops like crimson clover or winter rye to protect and improve your soil through the off-season.

November and December — Rest, Reflect, and Plan

The Rogue Valley winter is mild enough that the garden never fully sleeps, but November and December are the closest thing to an off-season we get.

In the garden: Hardy greens continue growing slowly under frost cloth. Garlic and overwintering onions are establishing in the ground. Perennial herbs—rosemary, sage, thyme, and oregano—are largely dormant but alive and will return strongly in spring.

Indoors: This is the season for reviewing the past year’s garden journal, researching new varieties, and beginning to plan next season’s beds. Order your seed catalogs. Think about what worked and what you’d do differently. Consider what you want to try for the first time next year.

And then, before you know it, January arrives and the whole beautiful cycle begins again.

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A Quick Reference: Rogue Valley Planting Calendar

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This calendar will keep evolving as I spend more time gardening here in Grants Pass and learn the specific rhythms of my yard and soil. I’ll update it each season as I discover what works and what I’d adjust. If you’re gardening elsewhere in the Rogue Valley and have timing observations that differ from mine, I’d love to hear about them—every garden has its own microclimate, and the more we share what we learn, the better we all grow.

— Gerry