Fielding Tree Care

The Colorado Trees and Shrubs We Treat

With decades of experience caring for Colorado trees and shrubs, our team at Fielding Tree Care has put together a comprehensive list of the trees and shrubs we treat. Additionally, we’ve added some helpful bits of information for each plant for a high-level view of their care.

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We take your tree and shrub care seriously.

You can browse this list to see if we work with the trees and shrubs on your property, or contact us directly to schedule a free, on-site consultation with one of our certified arborists.

Rose, or Rosaceae Family

Apple Trees

Most Common Species of Ash Trees in Colorado:

Yellow Delicious
Red Delicious
Cox Orange
Granny Smith
Cortland
Fireside
Fameuse
Haralson
Lodi

Pests and Diseases Affecting Apple Trees:

Fire Blight
Apple Scab
Mites
Aphids
Codling Moth Worms

Growing Season for Apple Trees in Colorado:

Spring through early summer

Dormant Season for Apple Trees:

Winter

Preventive Medicine Tips for Apple Trees:

Trimming
Insecticides

Ash Trees

Most Common Species of Ash Trees in Colorado:

Green Ash
White Ash
Blue Ash

Pests and Diseases Affecting Ash Trees:

Emerald Ash Borer
Lilac Ash Borer
Red-Headed Ash Borer
Ash Bark Beetles
Ash Leaf Curl Aphids

Growing Season for Ash Trees in Colorado:

Blooming occurs May through July

Fruits usually ripen in August

Dormant Season for Ash Trees:

Winter

Preventive Medicine Tips for Ash Trees:

Fertilizing
Watering
Trimming
Chemical treatment via trunk injection or trunk spray

Aspen Trees

Most Common Species of Aspen Trees in Colorado:

Quaking Aspen

Pests and Diseases Affecting Aspen Trees:

Hypoxylon Canker

Growing Season for Aspen Trees in Colorado:

Spring

Dormant Season for Aspen Trees:

Winter

Preventive Medicine Tips for Aspen Trees:

Fertilization
Watering
Trimming
Soil Injections (for specific disease)

Boxelder Trees

Most Common Species of Boxelder Trees in Colorado:

Western Boxelder

Pests and Diseases Affecting Boxelder Trees:

Leaf Spot
Powdery Mildew
Verticillium Wilt
Slime Flux

Growing Season for Boxelder Trees in Colorado:

April and May

Dormant Season for Boxelder Trees:

Winter

Preventive Medicine Tips for Boxelder Trees:

Watering
Trimming
Intesticides

Catalpa Trees

Most Common Species of Catalpa Trees in Colorado:

Western Catalpa

Pests and Diseases Affecting Catalpa Trees:

Powdery Mildew
Verticillium Wilt

Growing Season for Catalpa Trees in Colorado:

Spring

Dormant Season for Catalpa Trees:

Winter

Preventive Medicine Tips for Catalpa Trees:

Trimming
Fungicide

Chokecherry Trees

Most Common Species of Chokecherry Trees in Colorado:

Canada Red Chokecherry

Pests and Diseases Affecting Chokecherry Trees:

Honey Fungus
Canker
Black Knot
X-Disease

Growing Season for Chokecherry Trees in Colorado:

Plant in fall
Fruit blooms in May

Dormant Season for Chokecherry Trees:

Winter

Preventive Medicine Tips for Chokecherry Trees:

Fertilizing
Watering
Trimming

Cottonwood Trees

Most Common Species of Cottonwood Trees in Colorado:

Plains
Narrowleaf
Eastern
Lanceleaf

Pests and Diseases Affecting Cottonwood Trees:

Powdery Mildew
Slime Flux
Cytospora Canker
Leaf Spot
Aphids
Scale Insects

Growing Season for Cottonwood Trees in Colorado:

Cottonwoods pollinate February to May
Pollen season is spring

Dormant Season for Cottonwood Trees:

Winter

Preventive Medicine Tips for Cottonwood Trees:

Watering
Fertilizing
Trimming
Trunk Injections or Soil Injections
Wildfire Prevention

Crabapple Trees

Most Common Species of Crabapple Trees in Colorado:

Robinson
Spring Snow

Pests and Diseases Affecting Crabapple Trees:

Scabs
Cedar-Hawthorn Rust
Fire Blight Bacterial Disease

Growing Season for Crabapple Trees in Colorado:

Plant in Spring or Fall
Fruit Blooms in April through May

Dormant Season for Crabapple Trees:

Later Winter

Preventive Medicine Tips for Crabapple Trees:

Irrigation
Trimming
Trunk Injections
Canopy Spray

Elm Trees

Most Common Species of Elm Trees in Colorado:

American Elm
Siberian Elm

Pests and Diseases Affecting Elm Trees:

Elm Leafminer
Elm Leaf Beetle

Growing Season for Elm Trees in Colorado:

Spring

Dormant Season for Elm Trees:

Winter

Preventive Medicine Tips for Elm Trees:

Trunk Injection
Soil Applications
Intesticides
Foliar Spray

Rose, or Rosaceae Family

Hawthorn Trees

Most Common Species of Hawthorn Trees in Colorado:

River Hawthorn

Pests and Diseases Affecting Hawthorn Trees:

Scale
Spider Mites
Fire Blight
Fruit Rot
Rust

Growing Season for Hawthorn Trees in Colorado:

Spring

Dormant Season for Hawthorn Trees:

Winter

Preventive Medicine Tips for Hawthorn Trees:

Dormant Oil Spray
Trimming
Fertilizing

Linden Trees

Most Common Species of Linden Trees in Colorado:

American Linden
Littleleaf Linden
Redmond Linden
Greenspire Linden

Pests and Diseases Affecting Linden Trees:

The Japanese Beetle
The Linden Aphid
The Linden Borer

Growing Season for Linden Trees in Colorado:

Two week blooming period typically between May and July

Dormant Season for Linden Trees:

Late Winter

Preventive Medicine Tips for Liden Trees:

Watering
Fertilizing
Trimming
Intesticides for Japanese Beetles

Locust Trees

Most Common Species of Locust Trees in Colorado:

Honey Locust
Hardwood Black Locust
Purple Robe Locust
New Mexico Locust

Pests and Diseases Affecting Locust Trees:

Cankers
Root Collar Rot
Honey Locust Borer
Honey Locust Spider Mite
Honey Locust Podgall Midge

Growing Season for Locust Trees in Colorado:

May and July

Dormant Season for Locust Trees:

Winter

Preventive Medicine Tips for Locust Trees:

Watering
Fertilizing
Trimming
Intesticides
Trunk Injections (for specific pest or disease)

Maple Trees

Most Common Species of Maple Trees in Colorado:

Blaze Maple
Norway Maple
Silver Maple

Pests and Diseases Affecting Maple Trees:

Frost Damage
Chlorosis

Growing Season for Maple Trees in Colorado:

March through April

Dormant Season for Maple Trees:

Winter

Preventive Medicine Tips for Maple Trees:

Watering
Fertilizing
Trimming
Wrapping the trunk
Trunk and/or soil injections to bolster the health of the tree

Oak Trees

Most Common Species of Oak Trees in Colorado:

Gambel Oak

Pests and Diseases Affecting Oak Trees:

Oak Leaf Blister
Cankers
Powdery Mildew

Growing Season for Oak Trees in Colorado:

Mid fall through early spring

Dormant Season for Oak Trees:

Winter

Preventive Medicine Tips for Oak Trees:

Fertilizing
Watering
Trimming

Rose, or Rosaceae Family

Pear Trees

Most Common Species of Pear Trees in Colorado:

Magness
Ayers
Honey Sweet

Pests and Diseases Affecting Pear Trees:

Fire Blight
Pear Scab
Fabraea Leaf Spot
Sooty Blotch

Growing Season for Pear Trees in Colorado:

Plant in spring
Fruit blooms in summer and early fall

Dormant Season for Pear Trees:

Winter

Preventive Medicine Tips for Pear Trees:

Fertilizing
Watering
Trimming

Pine, Evergreen, and Spruce Trees

Most Common Species of Evergreen Trees in Colorado:

Blue Spruce
Douglas Fir
Engelman Spruce
Ponderosa Pine
Austrian Pine

Pests and Diseases Affecting Evergreen Trees:

IPS Beetle
Pine Wilt Nematode

Growing Season for Evergreen Trees in Colorado:

Pollinate in May

Dormant Season for Evergreen Trees:

Winter

Preventive Medicine Tips for Evergreen Trees:

Fertilizing
Watering
Trunk Injections
Mulching
Canopy Spray (where applicable)

Willow Trees

Most Common Species of Willow Trees in Colorado:

Coyote Willow
Sandbar Willow
Narrowleaf Willow

Pests and Diseases Affecting Evergreen Trees:

Scabs
Blight
Crown Gall
Black Canker

Growing Season for Willow Trees in Colorado:

Plant in Fall
Willows Bloom in February through June

Dormant Season for Willow Trees:

Winter

Preventive Medicine Tips for Willow Trees:

Fertilizing
Watering
Trimming
No chemical treatment advised

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Shrubs We Treat

Barberry

Most Common Species of Barberry in Colorado:

Colorado Barberry
Japanese Barberry

Pests and Diseases Affecting Barberry Shrubs:

Scale
Aphids
Boxwood Blight
Powdery Mildew
Verticillium Wilt
Anthracnose
Bacterial Leaf Spots

Growing Season for Barberry in Colorado:

Plant late spring through early summer
Spring

Dormant Season for Barberry Shrubs:

Winter

Preventive Medicine Tips for Barberry Shrubs:

Trimming
Fungicide

Boxwood

Most Common Species of Boxwood in Colorado:

Korean Boxwood
Littleleaf Boxwood
Common Boxwood

Pests and Diseases Affecting Boxwood Shrubs:

Fire Blight
Nematodes
Leaf Burn
Volutella Blight

Growing Season for Boxwood in Colorado:

Late spring through early summer

Dormant Season for Boxwood Shrubs:

Winter

Preventive Medicine Tips for Boxwood Shrubs:

Winterizing
Trimming

Burning Bush

Most Common Species of Burning Bush in Colorado:

Winged Burning Bush
Dwarf Burning Bush

Pests and Diseases Affecting Burning Bush Shrubs:

Scale
Spider Mites
Powdery Mildew
Crown Gall

Growing Season for Burning Bush in Colorado:

Mid spring to mid summer

Dormant Season for Burning Bush Shrubs:

Winter

Preventive Medicine Tips for Burning Bush Shrubs:

Spraying

Forsythia

Most Common Species of Forsythia in Colorado:

Forsythia Northern Gold
Forsythia Citrus Swizzle
Forsythia Bronxensis

Pests and Diseases Affecting Forsythia Shrubs:

Galls
Twig Blight

Growing Season for Forsythia in Colorado:

Late winter through early spring

Dormant Season for Forsythia Shrubs:

Fall through early winter
Plant in fall

Preventive Medicine Tips for Forsythia Shrubs:

Prune after first bloom

Hibiscus

Most Common Species of Hibiscus in Colorado:

Summerific Hibiscus
Hardy Hibiscus

Pests and Diseases Affecting Hibiscus Shrubs:

Aphids
Fungus
Bugs

Growing Season for Hibiscus in Colorado:

Mid to late summer

Dormant Season for Hibiscus Shrubs:

Winter

Preventive Medicine Tips for Hibiscus Shrubs:

Protect roots with compost
Pruning
Watering

Hydrangea

Most Common Species of Hydrangea in Colorado:

Annabelle
Snowflake

Pests and Diseases Affecting Hydrangea Shrubs:

Scale
Slugs
Aphids

Growing Season for Hydrangea in Colorado:

Spring through early fall

Dormant Season for Hydrangea Shrubs:

Fall through Winter

Preventive Medicine Tips for Hydrangea Shrubs:

Fungicides
Pruning

Juniper

Most Common Species of Juniper in Colorado:

Rocky Mountain Juniper

Pests and Diseases Affecting Juniper Shrubs:

Cedar-Hawthorn Rust
Twig Blight

Growing Season for Juniper in Colorado:

January through May
Often they have a second summer and bloom again September through December

Dormant Season for Juniper Shrubs:

Does not go dormant

Preventive Medicine Tips for Juniper Shrubs:

Watering
Trimming
Spraying

Lilac

Most Common Species of Lilac in Colorado:

Downy Lilac

Pests and Diseases Affecting Lilac Shrubs:

Lilac Ash Borer
Bacterial Blight
Powdery Mildew

Growing Season for Lilac in Colorado:

Spring

Dormant Season for Lilac Shrubs:

Summer through winter

Preventive Medicine Tips for Lilac Shrubs:

Avoid over-fertilizing
Pruning
Keep mulch away from base of shrub
Spraying

Mugo Pine

Most Common Species of Mugo Pine in Colorado:

Dwarf Mugo Pine
Common Mugo Pine

Pests and Diseases Affecting Mugo Pine Shrubs:

Scale
Pine Wilt Disease

Growing Season for Mugo Pine in Colorado:

Spring through Fall

Dormant Season for Mugo Pine Shrubs:

Winter

Preventive Medicine Tips for Mugo Pine Shrubs:

Spraying

Potentilla

Most Common Species of Potentilla in Colorado:

Potentilla hybridize so it’s usually difficult to identify to exact species, but they have been named according to the color of flower they produce. Some examples are:
Golddrop
Mango Tango
Pink Beauty
Sunset

Pests and Diseases Affecting Potentilla Shrubs:

Downy Mildew
Powdery Mildew

Growing Season for Potentilla in Colorado:

Bloom summer through early fall

Dormant Season for Potentilla Shrubs:

Winter

Preventive Medicine Tips for Potentilla Shrubs:

 

Sea Grasses

Most Common Species of Sea Grasses in Colorado:

Buffalo Grass
Blue Grama
Maiden grasses
Prairie Dropseed
Northern sea oats
Feather reed grass

Pests and Diseases Affecting Sea Grasses Shrubs:

Aphids
Mites
Rabbits

Growing Season for Sea Grasses in Colorado:

Summer

Dormant Season for Sea Grasses Shrubs:

Winter

Preventive Medicine Tips for Sea Grasses Shrubs:

Watering
Cutting back

Sand Cherry

Most Common Species of Sand Cherry in Colorado:

Western Sand Cherry

Pests and Diseases Affecting Sand Cherry Shrubs:

Japanese Beetles

Growing Season for Sand Cherry in Colorado:

April through May

Dormant Season for Sand Cherry Shrubs:

Winter

Preventive Medicine Tips for Sand Cherry Shrubs:

Watering
Pruning
Intesticides

Spirea

Most Common Species of Spirea in Colorado:

Mountainspray

Pests and Diseases Affecting Spirea Shrubs:

Spirea Aphid
Leaf Spot
Fire Blight
Powdery Mildew

Growing Season for Spirea in Colorado:

Bloom in late spring through early summer

Dormant Season for Spirea Shrubs:

Winter

Preventive Medicine Tips for Spirea Shrubs:

Watering
Pruning

Yew

Most Common Species of Yew in Colorado:

Taxus media
Taxus cuspidata

Pests and Diseases Affecting Yew Shrubs:

Phytophthora
Laetiporus sulphureus

Growing Season for Yew in Colorado:

Spring

Dormant Season for Yew Shrubs:

Winter

Preventive Medicine Tips for Yew Shrubs:

Spraying

It’s Time To Implement A Tree Protection And Feeding Plan.

Contact us to book a free consultation today!