Late Summer Tree Care: What to Do in Your Campbell River Garden

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Late August and early September can feel like the beginning of fall, but our gardens are often still experiencing dry summer conditions. Trees and shrubs may be showing signs of heat and drought stress, while cooler mornings have many of us thinking about fall planting and pruning.

This is a valuable time to care for the trees you already have, see how your garden handled the summer, and begin preparing for the season ahead.

Continue Watering Your Trees

Even when the air begins to feel cooler, the soil around your trees may still be very dry. Established trees, young trees, and newly planted trees can all benefit from slow, deep watering during extended dry periods.

Rather than watering lightly every day, allow the water to soak deeply into the soil around the root zone. For established trees, focus on the area beneath and slightly beyond the canopy, not directly against the trunk.

Pay particular attention to:

• Trees planted within the last two or three years

• Trees growing in exposed or windy locations

• Trees surrounded by lawn or pavement

• Trees with scorched, curling, or prematurely dropping leaves

• Species that prefer consistently moist soil

Continue watering until regular fall rainfall returns. Even native trees need supplemental water while they are becoming established. Slow, deep watering encourages roots to grow farther into the soil and is generally more effective than frequent surface watering.

Refresh the Mulch Around Your Trees

Late summer is a good time to check the mulch around your trees. A layer of arborist wood chips helps retain soil moisture, reduce competition from grass and weeds, moderate soil temperature, and gradually contribute organic matter to the soil.

Spread the mulch broadly across the root zone when possible. Keep it away from the trunk and visible root flare. Mulch piled against the trunk can hold excess moisture against the bark and contribute to decay, disease, and root problems.

If the soil is extremely dry, water deeply before adding or refreshing the mulch. Mulch helps retain moisture already in the soil, but it cannot correct dry soil on its own.

Is It Time to Plant Trees?

Almost.

Fall can be an excellent time to plant trees in Campbell River. Cooler temperatures and the return of seasonal rain reduce stress on newly planted trees while the soil remains warm enough for root development.

Late August may still be too hot and dry for planting unless you can provide reliable watering. Early September planting can work for container-grown trees, but it is often better to wait until the hottest weather has passed and the soil has received some moisture.

The ideal timing depends on the weather, planting location, tree species, and condition of the tree. In general:

• Container-grown trees can be planted in early fall if they receive consistent aftercare

• Trees should not be planted into extremely dry or waterlogged soil

• Bare root trees are usually planted later, once they are dormant

• Newly planted trees will still require watering, even after temperatures cool

• The tree should have time to begin establishing before winter conditions arrive

Fall planting is not simply about putting a tree in the ground. Choosing the right tree for the location is one of the most important parts of the process.

Consider the tree’s mature size, exposure to coastal winds, available sunlight, soil drainage, proximity to buildings and utilities, and the amount of space available for its roots. A tree that fits the site will be healthier, require less corrective pruning, and provide more value over its lifetime.

Look for Signs of Summer Stress

Late summer provides an opportunity to see how your trees responded to heat, drought, wind, and other environmental pressures.

Walk through your property and look for:

• Leaves changing colour or dropping earlier than expected

• Dead or thinning branches

• Cracks, splits, or hanging limbs

• Fungal growth around the trunk or roots

• Damage from lawn equipment

• Soil pulling away from the root ball of a young tree

• Newly exposed roots or changes in soil level• Insect activity or unusual leaf damage

A few damaged leaves may not be cause for concern. However, significant canopy thinning, widespread discolouration, dead branches, or sudden changes should be assessed. Tree health concerns often have more than one contributing factor, so adding fertilizer or pruning heavily may not address the real problem.

Be Careful With Late Summer Pruning

Late August and early September are not necessarily the best times for major tree pruning. Removing too much foliage while a tree is already experiencing drought stress can place additional pressure on it.

Dead, broken, or hazardous branches may need to be addressed promptly, but routine structural or aesthetic pruning should be timed according to the tree species and the reason for pruning.

Avoid topping trees or removing large amounts of healthy canopy. Leaves are still helping the tree produce and store energy for the months ahead.

What About Cutting Back Laurel Hedges?

Late August and early September can be a good time to give an established laurel hedge its final light trim of the season. This can help tidy summer growth and keep pathways, driveways, windows, and property lines clear.

Try to avoid cutting a laurel hedge back too aggressively at this time of year. Heavy renovation pruning can encourage tender new growth that may not have enough time to mature before colder weather arrives. If a hedge has become very tall, wide, or overgrown, it may be better to plan a more thoughtful reduction at an appropriate time rather than removing a large amount all at once.

Before trimming, check the hedge carefully for active bird nests and other wildlife. Dense evergreen hedges provide valuable shelter, even when nesting season is beginning to slow down.

When trimming laurel, hand pruners can create a cleaner appearance than hedge trimmers because large leaves cut in half may develop brown edges. For a long hedge, this may not always be practical, but selective hand pruning can be helpful around the most visible areas.

After pruning, remove cut branches from the top and interior of the hedge. If the soil is dry, give the hedge a deep watering to help it recover.

Protect the Root Zone During Fall Projects

Late summer often brings landscaping projects, garden cleanups, and preparations for fall planting. Remember that many tree roots are relatively close to the soil surface and can extend well beyond the canopy.

Avoid:

• Adding deep layers of soil over existing roots

• Digging trenches through the root zone

• Driving or parking equipment beneath trees

• Changing drainage around mature trees

• Cutting large roots without professional guidance

• Installing raised beds against tree trunks

Damage to the roots may not become visible in the canopy immediately. Protecting the soil around a tree is one of the most effective ways to protect the tree itself.

Start Planning for Fall

This is a good time to decide what you would like your property to become over the next several years. You may want to add shade, improve privacy, create wildlife habitat, replace a declining tree, or introduce more native plants.

Taking time to understand the site before planting can prevent costly problems later. The best tree is not simply the one that looks appealing at the nursery. It is the tree that will suit your property as it grows and changes.

If you have questions about planting, hedge trimming, or fall pruning, reach out to the Vision Arboriculture team. We can help you understand what your trees and shrubs need and determine the right timing for the work.

This time of year is also ideal for a Property Stewardship Walk. Together, we will walk through your property, discuss your trees, shrubs, gardens, and goals, and identify practical next steps for the coming seasons. It is a thoughtful way to plan for fall while considering the long-term health of your entire property.