Hot, dry summers are becoming more common—even in traditionally temperate areas like Upstate South Carolina. Extended periods of heat and limited rainfall can place tremendous stress on trees, weakening their defenses and making them more susceptible to pests, diseases, and decline. The good news? There are proactive steps you can take to support your trees during drought conditions.
What Drought Stress Looks Like in Trees
Not all signs of drought stress are obvious. Early symptoms can resemble other issues, so professional assessment is often helpful. Watch for:
- Wilting, curling, or browning of leaves
- Premature leaf drop or yellowing
- Sparse or thinning canopies
- Cracked or dry soil at the base
- Delayed spring bud break
These signs can appear weeks or even months after the drought begins. Without intervention, stress can lead to long-term decline or death.
Why Trees Are Vulnerable During Drought
Unlike turf or annuals, trees can’t be replaced quickly. Their extensive root systems are adapted to gradual moisture uptake. During drought, roots can shrink or die back, limiting water absorption. Drought also compromises a tree’s ability to produce defensive compounds—leaving it more open to borers, fungal infections, and secondary stressors.
How to Protect Your Trees from Drought Stress
1. Water Wisely
Deep, infrequent watering is key. Soak the root zone slowly to a depth of 12–18 inches using a soaker hose or drip system. Focus on the area beneath the canopy, not just the trunk.
2. Mulch for Moisture Retention
Apply a 2–4 inch layer of organic mulch around the base, keeping it 3–6 inches away from the trunk. Mulch regulates soil temperature, reduces evaporation, and improves water penetration.
3. Prioritize High-Value Trees
Mature trees, landmark specimens, or those providing shade should be prioritized during water restrictions. Younger trees may also need more frequent attention as their root systems develop.
4. Avoid Stressful Practices
During drought, avoid pruning, fertilizing, or planting near the root zone. These activities add stress and can worsen the tree’s condition.
5. Monitor and Adjust
Conditions change quickly in dry seasons. Continue observing tree health and soil moisture, and adjust care practices as needed.
When to Call a Certified Arborist
Not all tree stress is caused by drought. If your tree is showing symptoms and you’re unsure of the cause, an expert diagnosis is critical. Arbor Logic Group offers science-based assessments to determine the underlying issue and recommend tailored solutions.
Schedule a Tree Health Evaluation Today
Protect your landscape investment from long-term drought damage.
Talk with a certified arborist at Arbor Logic Group to assess your trees and build a resilient care plan for the seasons ahead.