Warmer summers, longer dry spells, and more intense storms are placing increasing stress on our trees. Whether you’re a homeowner with a few backyard trees or managing a larger property, understanding how to adapt your tree care to the changing conditions is key to keeping Hobart’s greenery healthy and resilient.
In this post, we’ll look at how climate change is affecting trees in Tasmania and share practical tips for maintaining strong, healthy trees in this evolving environment.
How Climate Change Is Affecting Trees in Tasmania
Over the past decade, Tasmania’s climate has become increasingly unpredictable. Some of the most noticeable changes include:
1. Longer Dry Periods and Drought
While Tasmania is known for its mild and wet climate, recent years have brought longer periods without rain—especially in southern regions like Hobart. These dry spells lead to:
- Dehydrated soil and shallow roots
- Increased susceptibility to pests and diseases
- Premature leaf drop and reduced growth
2. Hotter Summers
We’re now seeing more frequent heatwaves, with average summer temperatures creeping upward. This stresses even hardy native species, particularly younger trees or those planted in exposed areas.
3. Stronger and More Frequent Storms
Climate change has also led to more intense storms and high winds. These can break branches, uproot trees with shallow root systems, and cause lasting damage if trees are not maintained properly.
4. Shifting Seasonal Patterns
Traditional planting and pruning schedules are becoming less reliable. With warmer winters and unpredictable frosts, trees may start budding earlier—or suffer frost damage when cold snaps return unexpectedly.
Tips for Keeping Trees Healthy in Hobart’s Changing Climate
Despite these challenges, there’s plenty you can do to help your trees thrive. Proactive care makes all the difference in building resilience.
1. Water Deeply and Smartly
During dry spells, trees need consistent, deep watering rather than frequent light watering. Deep watering encourages roots to grow downward, making trees more drought-resistant.
Tips
- Water slowly at the drip line (the area beneath the outermost branches).
- Water early in the morning or late afternoon to reduce evaporation.
- Use soaker hoses or drip irrigation for efficient watering.
For mature trees, one deep watering every 2–3 weeks during dry periods is often enough, while younger trees may need weekly watering.
2. Mulch to Retain Moisture
Mulching is one of the easiest and most effective ways to protect your trees from temperature extremes and water loss. A 5–10 cm layer of organic mulch (such as wood chips or bark) helps regulate soil temperature, retain moisture, and suppress weeds.
Pro Tip: Keep mulch away from the trunk (about 10 cm of space) to prevent rot and pest problems.
3. Regular Pruning and Structural Maintenance
Pruning isn’t just about keeping trees tidy—it’s essential for their health and storm resilience.
Proper pruning removes weak or crossing branches, improving air circulation and reducing the risk of wind damage.
Best practices
- Prune during the tree’s dormant season (typically late winter or early spring in Hobart).
- Remove any dead, diseased, or damaged branches as soon as they appear.
- Avoid over-pruning; removing too much foliage at once can stress the tree.
If you’re unsure how much to prune, it’s best to consult a qualified arborist—incorrect pruning can do more harm than good.
4. Protect Roots and Soil Health
Compacted soil reduces oxygen and water movement, making it harder for roots to thrive.
Avoid driving or parking vehicles near tree roots, and try not to disturb the soil during construction or landscaping.
Adding organic matter (like compost) each year can improve soil health and help trees withstand stress from heat and drought.
5. Monitor for Pests and Diseases
A stressed tree is far more vulnerable to pests such as borers, scale, and psyllids, as well as fungal diseases like root rot and canker.
Regularly inspect your trees for:
- Discoloured or curling leaves
- Sawdust or holes in the bark
- Sticky residue (honeydew) from sap-sucking insects
Early detection allows for effective treatment before problems spread. A local arborist can diagnose and recommend safe, targeted treatments.
6. Choose Climate-Resilient Tree Species
When planting new trees, opt for species that are naturally suited to Tasmania’s evolving climate.
Native species such as:
- Eucalyptus globulus (Tasmanian Blue Gum)
- Acacia melanoxylon (Blackwood)
- Banksia marginata (Silver Banksia)
These are not only adapted to local conditions but also support Hobart’s native wildlife and pollinators.
The Role of Arborists in a Changing Climate
Professional arborists play a crucial role in helping Hobart’s urban forest adapt. From health assessments and soil testing to storm preparation and emergency tree care, expert advice ensures that your trees remain safe, strong, and sustainable for years to come.
Summary
Climate change presents new challenges for tree care, but with the right practices, your trees can continue to thrive in Hobart’s evolving environment.
By watering wisely, mulching regularly, pruning carefully, and choosing resilient species, you’ll be doing your part to protect not only your property but also Tasmania’s precious natural landscape.
If you’re concerned about the health of your trees—or want professional help preparing your garden for the seasons ahead—our team at Matthew Clements Tree Service is here to help.
Contact us today for expert tree care advice, pruning, and maintenance across Hobart and southern Tasmania.
