Autumn in the Pacific Northwest (PNW) isn’t just about cooler temperatures and changing leaves. It’s a golden opportunity for gardeners to extend their growing season and enjoy a bonus harvest. In this guide, you’ll find everything you need to make the most of your PNW fall garden.
The Essential Fall Gardening Checklist
The beauty of the PNW’s fall is unparalleled, but to capture this in your garden requires preparation and precision. Here’s a checklist to ensure your plot thrives:
Soil Assessment and Prep
PNW’s soil can range from sandy to clay-rich. Test your soil’s pH and nutrient levels. Given our region’s frequent rainfall, ensure proper drainage to prevent root rot. Amend the soil with local organic compost or other supplements from Wilco to boost fertility.
Digital Soil PH Meter
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luster leaf Rapitest 1840 Soil pH Tester
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Wilco, Premium Soil Test Kit
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G&B, Purely Compost, 1.5 cu ft
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Space Analysis
As the sun takes a softer angle, monitor your garden’s sunlight exposure. Some spots may receive fewer sun hours, making them more suitable for shade-loving crops. Adjust your planting locations accordingly.
Tool Inspection
The right tools make a world of difference. Clean and sharpen your gardening tools. Consider ergonomically designed tools, built to reduce strain during gardening tasks.
American Glove, Wonder Grip Thermo Plus Double Layer Latex Coated Protection Gardening Work Gloves, WG-338
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Metal Garden Cart with Fold-down Sides
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The Original Garden Weasel Cultivator
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Green Thumb, 48" Fiberglass Cushion Grip Handle Garden Hoe, 193055UJ
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Choose Resilient Seeds and Seedlings
Opt for hardy plant varieties known for their resilience to sudden temperature changes. It’s essential to focus on plants that can handle both mild days and cooler nights. This can help you have a thriving garden despite the seasonal challenges.
Frost Protection
Given our region’s susceptibility to early frosts, have frost cloths or cold frames on standby. These can be a lifesaver for those tender seedlings on unexpectedly chilly nights.
When to Plant Fall Vegetables
While the PNW offers an extended growing season due to its milder climate, it’s essential to time your planting just right to ensure a bountiful harvest.
Late July to Early August
This is the ideal window to plant hardy greens such as kale, collards, and Swiss chard. These leafy vegetables can withstand cooler temperatures and will grow steadily as the days shorten.
Mid to Late August
Turn your attention to root vegetables. Think beets, carrots, and turnips. They thrive in the cooling soil of the PNW’s late summer and will mature in time for a late fall or early winter harvest.
Early to Mid September
Now’s the time for radishes and green onions. These fast growers will be ready to harvest in a matter of weeks, adding a fresh crunch to your autumn meals.
Throughout September
While the month progresses, consider planting cover crops like clover, vetch, or winter rye. These plants are not typically harvested but play a crucial role in soil enrichment and protection against erosion during the PNW’s rainy months.
Late September to Early October
For gardeners eager to extend the growing season even further, consider setting up cold frames or row covers. With these in place, you can plant leafy greens like spinach and arugula, which, with a bit of protection, can produce fresh leaves well into the winter months.
These timelines are guidelines. The specific conditions of your garden, microclimates, and any unexpected weather patterns should also influence your planting decisions.
Fall Vegetable Garden Recommendations
As summer transitions to fall, the variety of vegetables that thrive in this region is both diverse and delectable. For those looking to savor the flavors of the season and reap a bountiful harvest, here are some top fall garden vegetables tailored to the PNW climate:
Brassicas
This family of veggies shines in the cooler PNW fall. Consider planting:
- Broccoli: Look for varieties that are frost-hardy, ensuring a good yield even when temperatures start to drop.
- Cauliflower: Opt for early-maturing varieties to harvest them before the deep chill sets in.
- Brussels Sprouts: These require a longer growing season, so start them early in the summer to harvest in late fall.
Leafy Greens
- Kale: A superfood superstar, kale thrives in the cooler temperatures and can often be harvested well into winter.
- Swiss Chard: With its vibrant stems, chard not only adds flavor but also color to your garden.
Root Vegetables
- Beets: These grow well in the PNW fall and can be harvested at various stages, from tender young roots to fully matured ones.
- Carrots: Fall carrots tend to be sweeter, making them a favorite for many gardeners.
- Parsnips: They sweeten after a frost, making them perfect for fall and early winter harvest.
Peas
Fall is an excellent time for another round of peas. Snow peas and snap peas can be particularly successful, given the milder PNW climate.
Spinach
This green is cold-hardy and can produce a bountiful yield during the region’s cooler months. Plus, its flavor often improves with a touch of frost.
Radishes
As quick growers, radishes can be squeezed in for a late-season harvest. Their peppery bite is a perfect addition to fall salads.
Herbs to Plant in a Fall Garden
Herbs bring a delightful touch to any garden, not only offering culinary benefits but also adding fragrance and a splash of greenery that persists even as the days grow colder.
Parsley
Known for its vibrant green leaves and versatility in the kitchen, parsley thrives in the cooler fall climate of the PNW. Whether you prefer the curly or flat-leaf variety, this biennial herb will provide fresh leaves throughout the fall, and often beyond.
Cilantro
An herb that often bolts in summer heat, cilantro finds solace in the milder fall temperatures. Sow seeds in late summer, and you’ll be rewarded with aromatic leaves perfect for garnishing and sauces.
Rosemary
Rosemary, with its pine-like fragrance and woody stems, is a perennial herb that appreciates the milder fall climate. You can continue to harvest its sprigs for culinary use throughout the season.
Thyme
A hardy herb, thyme boasts tiny, aromatic leaves that pair wonderfully with autumn dishes. This perennial can handle the cooler temperatures and will often stay evergreen, adding a touch of green to your garden throughout the winter.
Sage
This herb, with its velvety leaves and savory flavor, can be planted in the fall and, with some protection, will provide fresh leaves for your culinary endeavors. Sage is particularly popular in holiday dishes, making it a timely addition to the fall garden.
Practical Tips for Fall Garden Success
Beyond just choosing the right plants, a successful garden often hinges on applying practical, region-specific strategies. Here are some tailored tips to ensure your fall garden thrives:
Prioritize Drainage
With the region’s notorious rainy seasons, ensuring proper garden drainage is crucial. Raised garden beds can be beneficial, preventing waterlogged soil and the associated root rot. Additionally, amending soil with compost or coarse sand can improve drainage.
G&B Organics, Harvest Supreme, 2 cu. ft.
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Embracing Mulching
Mulch helps retain soil moisture on drier days and prevents excessive moisture during heavy rains. Organic mulch options like straw or leaves can also break down over time, enriching the soil for future plantings.
Garden Valley, Bark Mulch, 2 cu. ft.
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Scotts, Nature Scapes Color Enhanced Black Mulch, 2 cu ft
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Scotts, Nature Scapes Color Enhanced Deep Forest Brown Mulch, 2 cu ft
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Monitor Frost Dates
While the PNW generally experiences milder autumns, unexpected frosts can still occur. Keep an eye on local forecasts and have frost protection measures like frost cloths or cloches on standby.
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Crop Cover Floating Cover, White, 6 ft. X 50 ft.
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Seed & Frost Plant Blanket, 4-Degree Variance, White, 6 x 25-Ft.
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Pest Management
Fall can see an uptick in certain garden pests. Slugs, in particular, can be a challenge in the PNW. Consider natural deterrents, such as crushed eggshells or diatomaceous earth, around your plants.
Bonide, Diatomaceous Earth, 1.3 lb
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Bonide, Diatomaceous Earth Crawling Insect Killer, 5 lb
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Bonide, All Seasons Horticultural Spray Oil, 32 oz
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Maximize Sun Exposure
As days shorten, making sure your plants get enough sunlight becomes even more essential. Regularly prune or remove any overgrown summer plants that might be shading your fall crops.
Stay Consistent with Watering
Even in rain-prone areas, it’s vital to monitor soil moisture levels. A rain shower doesn’t always translate to deep soil hydration, especially if you have well-draining soil.
Rotate Crops
If you’ve been gardening in the same plot for multiple seasons, consider crop rotation. This practice can reduce soil-borne diseases and pests, and improve soil health by varying nutrient demands.
Extending the Growing Season
With the right techniques, we can counteract the cooler temperatures and ensure our garden produces well into winter. Here are some tried-and-tested methods:
Greenhouses
A greenhouse is a garden’s best friend when the temperature drops. By using solar energy, it traps heat inside, creating a microclimate that’s several degrees warmer than the outside. This warm environment allows you to grow vegetables that typically wouldn’t survive the cooler outdoor temperatures.
Benefits:
- Year-round Gardening: Some crops can be grown throughout the winter.
- Pest Control: Greenhouses can act as a barrier against pests.
- Variety: Grow a broader range of veggies not typically suited to the PNW’s colder months.
Backyard Expressions, Portable 2-Tier Walk-in Greenhouse 56"x 56"x 77"
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Walk-In Greenhouse Tunnel with Storage Bag 10ft x 7ft
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Elevated Raised Bed with Greenhouse Cover
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Cloches
A cloche is like a mini-greenhouse for individual plants or small plant groups. Traditionally made from glass, they can also be fashioned from clear plastic. They trap warmth from the sun during the day, providing an insulation layer against nighttime cold.
Benefits:
- Flexibility: Easily moveable, place them wherever protection is needed.
- Quick Installation: They are perfect for sudden cold snaps, as they can be placed and removed swiftly.
- Microclimate Creation: Each cloche creates its own tiny microclimate, perfect for tender seedlings.
Cold Frames
A cold frame is essentially a bottomless box with a clear or translucent top, usually positioned directly over plants in the ground. They function similarly to greenhouses but on a smaller scale.
Benefits:
- Insulation: Provides protection against frost and cold winds, especially during the critical germination period.
- Affordability: Cold frames can be built with upcycled materials, making them an economical choice.
- Transitioning Plants: They’re excellent for hardening off plants, preparing them for open-air conditions.
Fall Planting Made Easy
With the right techniques and timing, the season can be fruitful and rewarding. So grab your gardening gloves and breathe in the crisp fall air. It’s time to grow a fall garden that’s both bountiful and beautiful.
