The Urban Tree Canopy | Town of Grimsby

The urban tree canopy is the network of trees that line our streets, parks, and neighbourhoods—providing shade, cleaner air, and healthier communities. The Town is committed to protecting and growing this canopy through responsible planting, proactive maintenance, and long-term planning. This page highlights why our tree canopy matters, what we’re doing to support it, and how residents can help keep our community green and resilient.

Grimsby Green Tree Giveaway

The Grimsby Green Advisory Committee is hosting a tree giveaway for Grimsby residents at the Town's Community Safety Day event located at Southward Park (84 Mud St W) on May 9th from 10:00 am-2:00 pm.

150 Smaller stock trees (2x5" plugs or 1 gallon containers) will be provided on a "first come, first serve" basis. Limited quantities of the tree species listed below will be available so please arrive early to the event with your proof of residence to secure your tree. More information on the smaller stock species available are listed in the tab below.

Larger stock trees (2 or 3 gallon containers) is now sold out due to a high-level of interest. If you have already filled out an expression of interest form, your stock is not secured until you receive an email confirmation from a Town of Grimsby staff member (may take up to 7 business days).

Proof of residence will be required. Please click the boxes below for more information on the tree species available for both smaller and larger stock.

AVAILABLE AT EVENT ON FIRST COME, FIRST SERVED BASIS: Smaller Stock Trees

Smaller stock trees (2x5" plugs or 1 gallon container) will be provided on a "first come, first serve" basis. Limited quantities of the tree species listed below will be available so please arrive early to the event to secure your tree. Proof of residence will be required at the event to be eligible.

1. Red Maple (Acer Rubrum):

Tree Information:

Deciduous
Medium-large tree (up to 20m wide and 20m high)
Fast growth rate (60 cm or more/yr)
Average lifespan: 80-100 yrs old
Red leaves in Fall
Very-high wildlife value: attracts songbirds, waterbirds, and small mammals

Planting Information:

Good shade tree for backyards
Tolerates most soils including clay, sandy, and loamy. Thrives best in wet soils but tolerates some drought.
Prefers full sun but has some tolerance to shade.
Sensitive to Salt

2. Hackberry (Celtis Occidentalis):

Native Hackberry Tree - iTrees.com

Tree Information:

Deciduous
Medium-large tree (up to 15m wide and 18m high)
Fast growth rate (60cm or more/yr)
Average lifespan: 150-200 yrs old
Yellow leaves in Fall, purple berries in Winter, green flowers in Spring/Summer
Very-high wildlife value: critical food source and habitat for birds, mammals, and pollinators

Planting Information:

Good shade tree for frontyards
Adapts to many soil types but grows best in moist, well drained soil
Moderate tolerance to flooding and drought
Prefers full sun but has some tolerance to shade
Moderate tolerance to salt

3. Eastern Redbud (Cercis Canadensis)

Tree Information:

Deciduous
Small tree (up to 11m wide and 9m high)
Moderate growth rate (30-60 cm/yr)
Average lifespan: 20-25 years
It is known for its vibrant pink/purple flowers that turn yellow in the Fall
While it may shed some small flowers and seed pods, the tree supports wildlife with its blooms and fruit

Planting Information:

Good ornamental tree for backyards
Adapts to various soils but does not tolerate consistent wet conditions
Thrives in both the sun and shade
Sensitive to salt

4. Canadian Serviceberry (Amelancheir Canadensis)

Tree Information:

Deciduous
Small tree-shrub (up to 6m in width and 8m in height)
Moderate growth rate (30-60 cm/yr)
Average lifespan: 40-60 years
Fragrant Spring flowers, edible purple berries, and vibrant red and orange foliage in the Fall.
High wildlife value-attracts birds, pollinating insects, small mammals including Red Fox and Flying Squirrels.

Planting Information:

Good ornamental tree for frontyards.
Prefers moist, well-drained soils, tolerant to flooding
Thrives in both sun and shade
Sends up root suckers and will become shrubby if you do not prune them

SOLD OUT: Larger Stock Trees

Larger stock trees (2 or 3 gal) is now sold out due to a high-level of interest. If you have already filled out an expression of interest form, your stock is not secured until you receive an email confirmation from a Town of Grimsby staff member (may take up to 7 business days).

1. Eastern White Pine (Pinus Strobus)

Tree Information:

Evergeen
Large-very large tree (up to 12m wide and 24m high)
Fast growth rate (60 cm or more/yr)
Average lifespan: 200-400 years
Drops long, soft needles year-round, with heavier shedding in the Fall
Very-high wildlife value: provides good or shelter for several types of birds and small mammals

Planting Information:

Good tree for privacy or noise screening in backyards
Adapts to most soils but grows best in sand or sandy loam
Thrives in full sun but can tolerate shade
Sensitive to salt, drought, heat, flooding, and soil compaction

2. Sugar Maple (Acer Saccharum)

Tree Information:

Deciduous
Large-very large tree (up to 15m wide and 23m tall)
Slow growth rate (<30 cm/yr)
Average lifespan: 200-300 years
Small cluster of bell-shaped blossoms appear in late April or early May. Turns yellow, bright orange, or red in the Fall.
Very-high wildlife value- used by songbirds, upland ground birds, and small mammals.

Planting Information:

Good for providing shade in backyards
Grows in a variety of soils but does not tolerate drought or flooding
Prefers full sun but will tolerate some shade
Does not tolerate salt, extreme heat, pollution, or compaction therefore not recommended for roadsides.

3. Paper Birch (Betula Papyrifera)

Tree Information:

Deciduous
Medium-large tree (up to 15m wide and 21m tall)
Fast growth rate (60 cm or more/yr)
Average lifespan: 50-80 years
Has a small canopy and intermediate spread
Flowers are slender drooping, pencil-like catkins that are yellowish-green in colour emerging in late April through early May
Very-high wildlife value-used by songbirds, upland ground birds and small mammals

Planting Information:

Grows in a variety of sites with moderate moisture and good drainage, it is rarely found in wet, poorly drained soils
Prefers full sun and can not tolerate shade
It can be susceptible to pests and disease

4. Black Cherry (Prunus Serotina)

Tree Information:

Deciduous
Medium-large shade tree (up to 12m wide and 18m tall)
Fast growth rate (60 cm or more/yr)
Average lifespan: approx.100 years
Known for its profuse spring blooms, attractive Summer foliate, and vibrant Fall color.
Produces small, dark, bitter fruit that is popular with birds but can create litter along with leaf drop in the Fall.
Fruit will stain concrete.
The leaves and fruit will contain hydrocyanic acid which has the potential to poison livestock or other animals when consumed in large quantities.

Planting Information:

Grows in a variety of soils, prefers slightly moist soil, and will not tolerate extreme periods of wet or dry soil.
The tree prefers full sun but will tolerate some shade
Moderate tolerance to salt

5. Swamp White Oak (Quercus Bicolor)

Tree Information:

Deciduous
Medium-large shade tree (up to 18m wide and 18m tall)
Slow growth rate (<30 cm/yr)
Average lifespan: approx. 300 years
Yellow-green flowers are cluster of drooping catkins that emerge in May.
Drops large acorns and considerable number of leaves, with the heaviest shedding in the Fall.
Very high wildlife value-attracts water birds, upland ground bird, songbirds and small mammals.

Planting Information:

Durable, long-lived tree that thrives in moderate to wet, acidic soils but can tolerate drought, flooding, salt, and heat stress.
Prefers full sun but can tolerate some shade.
Pruning in the dormant season (before April after July) helps precent attracting beetles that could carry oak wilt.

6. Eastern White Cedar (Thuja Occidentalis)

Tree Information:

Evergreen
Small-medium tree (up to 5m wide and 18m high).
Slow Growth Rate (<30 cm/yr)
Average lifespan: approx. 200 years
Medium wildlife value-attracts songbirds, waterfowl, and small mammals

Planting Information:

Good for privacy or noise screens for backyards
Tolerates a variety of soil conditions, including clay and wet soils for short periods, but struggles in dry conditions and is not tolerant of prolonged flooding
Thrives in full sun but can tolerate some shade.
It can also experience winter burn in exposed locations and may suffer from damage due to ice and snow accumulation
Does not tolerate road salt.

Planting the trees on private property vs. public land: Please plant your trees on private property rather than public areas. You can check your property lines using our GIMS database. This ensures that the trees receive proper care and attention, and it respects local regulations, especially for front yard plantings..

Call for locates: Safety first! Before digging to plant your trees, remember to call for locates: https://ontarioonecall.ca/. This essential step helps prevent damage to underground utilities and ensures the safety of you and your community.

Locations matter: Before planting, consider the specific needs of the tree species you choose. Some trees thrive in full sun, while others prefer partial shade. Make sure to select the appropriate location based on sunlight, soil type, and available space.

The Role of Community in Urban Forestry

Supporting our urban tree canopy is a shared effort—and residents play a vital role, especially in communities where planting space is limited by impervious surfaces, underground utilities, and a lack of available public land. While the Town continues to plant and care for trees where possible, many of the best opportunities to grow the canopy are on private property.

Residents can make a meaningful impact by planting a tree in their yard and helping it thrive over time. A single well-placed tree can provide shade, reduce cooling costs, improve air quality, support wildlife, and make neighbourhoods more comfortable and beautiful.

Just as important is protecting the trees we already have. Mature trees provide the greatest benefits, and preserving them through proper care, maintenance, and thoughtful decisions during landscaping or construction helps ensure the canopy remains healthy for future generations.

Together, small actions on individual properties add up—strengthening our community forest and helping our neighbourhoods stay greener, cooler, and more resilient as the climate changes.

The Benefits of Trees

Trees are some of the most important assets in any neighbourhood, delivering a broad range of environmental, social, and economic benefits that improve everyday life for residents. As vital green infrastructure, they help address climate change, enhance air quality, and support local biodiversity. Trees also add beauty and comfort to public spaces, providing shade and inviting areas for recreation and community connection.

Energy Savings

Mature trees help lower energy use by shading building sin summer and reducing wind exposure in winter. This can decrease the need for air conditioning and heating, saving money and reducing overall energy demand.

Cleaner Air

Trees improve air quality by filtering pollutants such as dust, smoke, and exhaust particles from the air. They also absorb gases like nitrogen dioxide and ozone, helping create healthier neighbourhoods.

Improves Physical Health

Tree-lined streets and green space encourage walking, cycling, and outdoor recreation. Access to shaded, attractive areas also supports active transportation and can reduce heat-related health risks.

Provides Fresh Food

Urban fruit and nut trees can provide locally grown food for residents and wildlife by providing shelter, nesting areas, and food. Native tree species are especially important for supporting local ecosystems.

Supports Local Biodiversity

A mature canopy creates habitat for birds, pollinators, and other wildlife by providing shelter, nesting areas, and food. Native tree species are especially important for supporting local ecosystems.

Enhances Beauty

Trees add character, colour, and seasonal interest to streets and parks. A healthy canopy contributes to vibrant neighborhoods and creates welcoming public spaces.

Shade and Cooling

Large trees provide natural shade that cools sidewalks, parks, and homes. This reduces the urban heat island effect and helps make outdoor spaces more comfortable during the warmer months.

Improves Mental Health

Access to trees and green spaces can reduce stress and support overall wellbeing. Natural environments are linked to improved mood, better focus, and a stronger sense of community connection.

Increases Property Value

Homes and neighbourhoods with established trees are often more desirable and can have higher property values. A mature canopy can also enhance curb appeal and neighbourhood pride.

Stormwater Management

Trees help manage rainfall by intercepting water in their leaves and branches and absorbing it through their roots. This reduces runoff lowers the risk of flooding, and supports healthier waterways.

Protects Infrastructure

Tree roots help stabilize soil and reduce erosion, while canopy cover can protect pavement from extreme heat and weathering. Strategic tree planting can also help shield buildings and public spaces from wind and sun exposure.

Carbon Capture

Trees absorb carbon dioxide as they grow and store it in their trunks, branches, and roots. Maintaining and expanding the urban tree canopy helps reduce greenhouse gas levels and supports climate action goals.

Before You Plant a Tree: What to Consider

Planting Site Conditions

Planting a tree is a long-term investment in your home and community. Before you dig, it’s important to consider the conditions on your property so your tree has the space and support it needs to grow and thrive. This infographic highlights key factors to help residents choose the right tree, plant it in the right place, and contribute to a healthier urban tree canopy for years to come.

Trees need room above and below ground.

Check the mature height and spread
Keep space from buildings, fences, sheds, and driveways
Leave room for roots to grow without lifting pavement

Match the tree to the light your yard receives.

Full sun (6+ hours/day)
Part shade (3–6 hours/day)
Shade (less than 3 hours/day)
Tip: Observe sunlight in spring and summer for best accuracy.

Healthy soil = healthy roots.

Is the soil sandy, loamy, or clay?
Does water drain quickly or pool after rain?
Is the soil compacted (common near lawns and construction)?
Consider adding mulch and improving soil before planting.

New trees need regular watering for the first few years.

Can you reach the site with a hose or watering can?
Will it stay moist during hot, dry periods?
Plan for extra watering during the first 1–3 summers

Avoid costly damage and future pruning issues.

Look for power lines above
Watch for gas, hydro, water, and communication lines below
Always call your local utility locate service before digging

Choose a location that keeps sightlines clear.

Avoid blocking driveways, sidewalks, intersections, and signage
Keep space for safe movement and access

Some yards are tougher than others.

Hot areas near asphalt, concrete, and walls dry out faster
Windy or exposed sites may need hardier species
Salt spray near roads can affect tree health

Pick a tree that fits your lifestyle.

Fruit or nut trees may drop food and attract wildlife
Some trees are more vulnerable to pests or diseases
Consider allergies, sap, and leaf litter

The best tree is one that fits your site conditions.

Consider native or climate-resilient options
Avoid invasive species
Choose diversity to reduce pest and disease risk

Good planting helps trees live longer.

Plant at the right depth (don’t bury the trunk flare)
Mulch in a “donut” shape (not against the trunk)
Stake only if needed—and remove stakes early

Selecting the Right Tree: Space Considerations

Tree Planting Resources

An Introduction to Tree Planting

Experts from the Vineland Research and Innovation Centre and the NPCA shared insights on soil health, native species, and how we can all help our trees thrive.

Workshop

How to Plant a Tree

Tree Canada’s Planting Guide offers practical, step-by-step guidance to help communities and individuals plant and care for trees successfully for long-term health and environmental benefits.

Tree Canada's Guide

Species Selection

The NPCA’s Native Plant Guide provides clear, locally relevant information to help residents choose and grow native plants that support biodiversity, pollinators, and healthy ecosystems.

NPCA Native Plant Guide