Best Disease-Resistant Trees

Are you concerned about introducing unwanted diseases or pests into your landscape with your next tree planting project? Luckily there are numerous disease-resistant trees that will add beauty to your yard without the added risk of disease.

A key to keeping a healthy and thriving yard often lies in what growers choose to plant. Carefully selecting trees that don’t have any significant, life-threatening disease or insect issues could be what saves your landscape when disease sweeps across your area.

Best Disease-Resistant Trees

When researching disease-resistant trees, you want to keep in mind that choosing a diverse collection of tree species will keep pests from moving rapidly through your landscape, it’s unlikely the pest would be attracted to all tree species.

1. Kousa Dogwood (Cornus Kousa)

The Kousa Dogwood is typically a slow-growing, small to medium-sized tree great for all seasons. Its showy, creamy white flowers bloom in May, and some will even turn pinkish with age. The pinkish-to-red fruit is edible and resembles raspberries in the fall, with a reddish-purple to scarlet leaf color. This low-maintenance tree can be used as a border accent near a deck or patio, or as a specimen.

Plant type: Edible, shrub, tree

Maintenance: Low

Soil drainage: Good

USDA Hardiness Zones: 5-8

Light: Full sun, partial shade

Resistant: Anthracnose, powdery mildew, and some resistance to drought

2. Persian Parrotia (Parrotia Persica)

This drought-tolerant small to medium-sized tree is often cultivated for its beauty and durability. The flowers may be less than impressive, but the Persian Pattotia’s foliage more than makes up for its lackluster blooms. Long witch hazel-like leaves emerge reddish-purple in the spring, later turning to a medium green during the summer and then yellow with tinges of orange and red in the fall. Plant in groups, or use this tree as a background. Avoid planting them in wet, poorly drained, or waterlogged soils.

Plant type: Shrub, tree

Maintenance: Medium

Soil drainage: Good

USDA Hardiness Zones: 4-8

Light: Full to partial sun

Resistant: Insects and diseases

Tolerant: Acidic and alkaline soils, extreme heat, drought, wind, and urban conditions

3. Southern Magnolia (Magnolia grandiflora)

Known for its large, creamy white fragrant flowers, the southern magnolia spreads its beauty all across the South. This evergreen tree blooms in May and June, and some will even continue to bloom throughout the summer. Bright red-orange seeds emerge from September through November. These trees can be used as specimens, screens, patio trees, hedges, border accents, and container plants.

Plant type: Tree

Maintenance: High to medium

Soil drainage: Good, moist

USDA Hardiness Zones: 6-10

Light: Full sun to partial shade

Tolerant: Moderate drought, highly salt tolerant

Resistant: Insects and diseases, and moderately to deer damage

4. Chinese Fringe Tree (Chionanthus retusus)

The fluffy, fragrant flowers of this tree bloom white in the late spring. Its small stature makes it a great tree to plant near a patio or in small yards. Birds enjoy the blue-black olive-shaped fruit that ripens in the late summer and early fall. It can be used as an individual specimen, in groups, in mixed shrub borders, or in natural gardens.

Plant type: Shrub, tree

Maintenance: Low

Soil drainage: Good, moist

USDA Hardiness Zones: 5-9

Light: Full sun to partial shade

Resistant: Insects, diseases, range of soil types

Tolerant: Pollution

5. Ginkgo (Ginkgo biloba)

Often planted along streets, in parking lots, parks, and golf courses, this tree has a gangly and stark look when it’s young but fills out to become more picturesque with age. It has emerald-green fan-shaped leaves that turn yellow in the fall. Male trees are generally preferred over female cultivars in order to avoid the malodorous fruit of the female tree. 

Plant type: Edible, poisonous, tree

Maintenance: Medium

Soil drainage: Good, moist, occasionally dry, occasionally wet

USDA Hardiness Zones: 3-9

Light: Full sun

Susceptible: Bacterial leaf scorch

Resistant: Deer browsing

Tolerant: Drought, heat, air pollution

6. Paperbark Maple (Acer griseum)

If you are looking for a good shade tree that will also provide beautiful fall color, you can’t go wrong with the paperbark maple. It’s one of the latest maple trees to keep its fall color into the winter. Fall leaf colors can range from muted yellow to bright orange or red. They also make great lawn specimens, screens, patio trees, hedges, and border accents. 

Plant type: Tree

Maintenance: Low

Soil drainage: Good, moist

USDA Hardiness Zones: 4-8

Light: Full sun to partial shade

Resistant: Insects and diseases

7. Japanese Pagoda Tree (Styphnolobium japonica ‘Pendula’)

This medium to large tree is known for its green foliage and fragrant flowers. Its showy creamy white blooms appear in clusters during the summer, typically falling off and creating a midsummer blanket of white flowers around the base of the tree. The Japanese Pagoda tree’s glossy dark green summertime leaves remain green into late fall before turning to a perfect fall yellow. It can be used as an accent tree, screen, shade or street tree, or a specimen.

Plant type: Poisonous, tree

Maintenance: Low

Soil drainage: Good, moist

USDA Hardiness Zones: 4-9

Light: Full sun to partial shade

Resistant: Insects, diseases, heat, air pollution, and drought

8. Golden Rain Tree (Koelreuteria paniculata)

The Golden Rain Tree is a medium-sized, fast-growing deciduous tree with a showy display of bright yellow summertime blossoms that will create a blanket of “Golden Rain” petals around the trunk. It can be used as a shade tree or also works well on a lawn or near a patio. Just be sure to take into consideration the flower and leaf litter if planted near any hardscape.

Plant type: Tree

Maintenance: Low to medium

Soil drainage: Good, moist, occasionally dry, very dry

USDA Hardiness Zones: 5-9

Light: Full sun 

Resistant: Insects and diseases

Tolerant: Urban, drought, heat, wind, and air pollution

9. Japanese Snowbell (Styrax japonicus)

This flowering tree blooms in the late spring with fragrant white bell-shaped flowers before giving way to olive-green drupes in the fall. Its glossy dark green leaves turn yellow in the fall. It can be a beautiful tree on its own or a showy accent tree near a house or patio.

Plant type: Tree

Maintenance: Medium

Soil drainage: Good, moist

USDA Hardiness Zones: 5-9

Light: Full sun to partial shade

Resistant: Insects and diseases

What Makes a Tree Disease-Resistant?

In order to understand what a disease-resistant tree is, we first need to understand the meaning of disease resistance and any related terms.

A tree that is disease-resistant doesn’t mean it will never suffer from a disease. In fact, it’s quite possible a tree may show signs of disease even if it’s a disease-resistant species. But the symptoms will likely be less severe, and the tree is more likely to make a full recovery.

It’s also possible some trees may even be immune to certain diseases. But don’t be fooled into thinking you’re in the clear. No tree is immune to all diseases. Be sure to read the label carefully and choose what works best for your region. 

A tree that is susceptible means it’s unlikely to stop or limit the damage caused by a particular disease. 

TIP: Look for trees native to your region. They are often naturally resistant to local diseases. Ultimately, when choosing disease-resistant trees, remember to have realistic expectations. Expect to have extreme weather conditions or a few nibbles from local pests. No plant and no season will be perfect.

How Do You Know If Your Tree Has a Disease?

There are numerous signs that your tree has a disease, be sure to carefully evaluate your tree looking for these signs of distress or anything else that may seem concerning. Here are some of the things to look for:

• Root decay: Typically recognizable as fungal bodies growing on the ground around the roots or on the trunk.
• Lack of green under the bark: This may indicate an issue with the nutrient flow.
• Flaking or peeling bark: This could be a sign the tree isn’t receiving enough nutrients.
• Rot or fungus on the trunk: Often, this is a sign of decay.
• Oozing sap or sawdust: A borer insect more often than not causes this kind of destruction.
• Brittle branches: This could be a sign a tree may have already succumbed to a disease.
• No leaves: Pests may have taken up residence in the tree if you are seeing a lack of leaves.
• Misshapen or discolored leaves: This could be a sign of root rot or an insect infestation.

If your tree is indeed showing signs of disease, don’t write it off immediately. There may still be time to save your tree. Call a certified arborist to help diagnose the problem and come up with a treatment plan. 

What Do You Do If Your Tree Has a Disease?

The best thing to do if your tree has a disease is to call a certified arborist. They have an extensive knowledge base of tree biology and diagnostic skills. An arborist will be able to identify the disease, prescribe a treatment plan, and offer tips to prevent any further damage or future diseases. Learn more about certified arborists at Treesaregood.org.

FAQ About Disease-Resistant Trees

Still Questioning What Tree is Best for You?

Choosing trees for landscaping can be a daunting task, if you’re still not sure what type of tree, or how many, or even where on your property to plant, let us help connect you with a local certified tree specialist.

Main Image Credit: Alvin Kho / Flickr / CC BY-SA 2.0