Fall Planting for a Garden Glow-Up!

Why Fall Can Be the Perfect Time to Plant

Fall brings several advantages that make it an ideal planting season.

As temperatures begin to drop, plants experience less heat stress and lose less moisture through their leaves. At the same time, the soil is still holding onto the warmth of summer. This combination allows newly planted roots to establish themselves before winter arrives.

And while the top of the plant may appear to be slowing down for the season, the roots are still growing.

That means a tree, shrub, or perennial planted in fall can spend the cooler months developing a strong root system. When spring arrives, your plants are already established and ready to put their energy into new growth.

Fall planting can also mean less heat-related stress, fewer watering demands, and more comfortable working conditions for the gardener. It's a win for both you and your plants! Roots slowly establish below the frost line all winter, bringing a well established plant into the following spring! 

1. Choose the Right Plant for the Right Place

Before you grab your shovel, take a few minutes to consider where your plant will live.

Look at:

• Sun exposure: Is the location full sun, part shade, or shade?
• Soil: Is it sandy, clay-heavy, rocky, or well-draining?
• Moisture: Does the area stay wet or dry out quickly?
• Mature size: How large will the tree or shrub eventually become?
• Winter conditions: Will the plant be exposed to wind, snow, or road salt?

Choosing plants that are well suited to your specific growing conditions is one of the most important things you can do for long-term success.

North Idaho gardens experience cold winters, snow, spring moisture, and periods of summer heat and dryness. Selecting plants appropriate for our climate—and for the conditions on your particular property—can make a huge difference.

Not sure what will work best in your yard? Bring us a photo of your space, tell us about your sun and soil conditions, and let our team help you find the right plant for the right place.

2. Prepare the Planting Hole, But Don't Overdo It

When planting trees and shrubs, dig a hole that is wide rather than excessively deep.

A good general rule is to make the planting hole roughly two to three times wider than the root ball, while keeping the depth approximately equal to the height of the root ball.

The goal is for the plant to sit at the proper depth, not buried deeply in the soil.

When planting a tree, make sure the root flare is visible at or slightly above the surrounding soil level. Planting too deeply is a common mistake and can create problems for the plant over time.

For perennials, follow the planting depth recommended for the specific variety. Many perennials should be planted at approximately the same depth they were growing in their nursery container, although individual plants can vary.

3. Don't Create a Tiny Pocket of Perfect Soil

It can be tempting to fill your planting hole with rich compost or heavily amended soil, but resist the urge to create a tiny pocket of "perfect soil" around your new plant.

Your new plant needs to establish roots that eventually move beyond the original planting hole. If the soil inside the hole is dramatically different from the surrounding native soil, roots may have a harder time transitioning outward.

If your soil needs improvement, focus on improving the broader planting area when appropriate rather than creating an isolated pocket around the roots.

Not sure what your soil needs? Ask the Westwood Gardens team about soil, amendments, mulch, and other products that can help your North Idaho garden thrive.

4. Handle Roots Carefully

Whether you're planting a tree, shrub, or perennial, treat the roots with care.

For container-grown plants, gently loosen circling roots when necessary. You don't need to aggressively tear apart the root ball, but you do want to make sure tightly circling roots aren't left to continue wrapping around themselves.

For trees and shrubs, inspect the root flare before planting. If the plant has been buried too deeply in its container, carefully expose the top of the root system as needed so the plant can be positioned correctly.

Healthy roots are the foundation of a healthy plant—give them a good start!

5. Water Thoroughly After Planting

One of the biggest mistakes people make with fall planting is assuming that cooler weather means newly planted plants don't need water.

They absolutely do.

After planting, water deeply and thoroughly. This helps settle the soil around the roots and eliminates large air pockets.

Continue monitoring moisture throughout the fall. Even when temperatures are cool, newly planted trees and shrubs still need adequate moisture while their roots are establishing.

If fall is unusually dry, don't rely solely on rainfall. Check the soil and water when needed.

The goal isn't to keep the soil constantly soggy. It's to provide deep, consistent moisture without creating waterlogged conditions.

6. Add Mulch, but Keep It Away From the Trunk

Mulch is especially helpful for newly planted trees, shrubs, and perennials. Always think: DONUTS, no VOLCANOS!

Properly applied mulch can help:

• Retain soil moisture
• Moderate soil temperatures
• Reduce competition from weeds
• Protect developing roots
• Add organic matter as it breaks down

Apply mulch several inches deep, but don't pile it against the trunk or stems.

You've probably seen those "mulch volcanoes" around trees. Avoid them! Keep the trunk flare and immediate base of the plant exposed. Only donuts in this joint!

7. Don't Fertilize Just Because You're Planting

New trees and shrubs generally don't need a big dose of fertilizer simply because they're being planted.

Right now, the priority is root establishment instead of forcing a flush of top growth.

A well-planted tree or shrub needs time to settle in and develop roots. Unnecessary high-nitrogen fertilizer can encourage tender top growth at a time when the plant should be preparing for winter.

Instead, focus on proper planting depth, good soil conditions, adequate watering, and appropriate mulch.

8. Fall Is Perfect for Perennials, Too

Fall is fantastic for planting perennials!

Whether you're adding pollinator-friendly flowers, shade-loving plants, ornamental grasses, or classic garden favorites, fall planting gives perennials time to establish their roots before the next growing season.

After planting, water thoroughly and maintain appropriate moisture until the ground begins to freeze.

Depending on the perennial, you may also choose to leave the foliage standing through winter rather than cutting everything back immediately. Some plants provide winter interest and can provide habitat for beneficial insects.

Always consider the specific needs of the perennial you're planting.

9. Give Your Landscape One Last Glow-Up Before Winter

Maybe your landscape is almost finished, but there's one empty spot that has been bothering you all summer.

Maybe an old shrub needs to be replaced. Maybe your front entry needs a little more color and structure. Or maybe you simply love gardening enough that you're not quite ready to put the shovel away for the season!

Fall is a great time for that final garden glow-up.

And we've got you covered. Fresh fall shrubs are arriving at Westwood Gardens next week, giving you one more opportunity to add beauty, structure, texture, and seasonal interest to your landscape before winter settles in.

Fall is also a wonderful time to think about the bigger picture of your landscape. Look for areas that need screening, foundation plantings that could use an update, or spaces that would benefit from a new focal point.

A few well-chosen shrubs can make a tremendous difference, and planting them in fall gives them time to settle in before spring.

10. Know When to Stop Planting

Fall planting is fantastic, but North Idaho winters don't wait forever.

Ideally, get trees, shrubs, and perennials into the ground while the soil is still workable and before the ground freezes.

Don't wait until the last possible day.

Planting earlier in the fall gives roots more time to establish before winter conditions arrive. If you're planning a larger landscaping project, getting started sooner is especially important.

11. Don't Forget Your Plants After Planting

Planting day isn't the end of the job.

Keep an eye on your new plants throughout the fall. Check soil moisture, especially during dry periods, and watch for damage from wildlife, wind, or other environmental stresses.

When winter arrives, remember that young plants may need additional protection depending on their species and location.

A little attention during that first year can go a long way toward helping your new plants become established.

Plant Now, Enjoy Later

One of the best things about fall gardening is that you're investing in the future.

When you plant a tree or shrub in the fall, you may not see a dramatic transformation immediately. Much of the important work is happening underground as roots establish.

Then spring arrives.

The weather warms, the days get longer, and your newly planted landscape is already prepared to take off.

So if you've been waiting for the perfect time to plant, this is it!

Whether you're in Rathdrum, Coeur d'Alene, Hayden, Post Falls, Plummer, St. Maries, Sandpoint, Bonners Ferry, or the Spokane area, fall is an excellent opportunity to add trees, shrubs, and perennials to your landscape.

Grab your shovel, choose the right plants, plant them properly, water deeply, add a layer of mulch, and let those roots get established.

Plant now. Grow strong. Enjoy your landscape for years to come.