Late Summer Tree Care in Central Texas: Your August Guide to Healthy Trees

ATX Trees
Jul 31
6 min read

We are deep into the dog days of summer. The heat is relentless, the soil is dry, and your trees have been working overtime to survive. Across Dripping Springs, Fredericksburg, and San Antonio, the cumulative effects of the summer heat are becoming visible. Leaves are curling, canopies are thinning, and some trees are showing signs of stress.

But here is the good news: August is a turning point. The hottest days are behind us, and fall is just around the corner. The care you provide your trees right now will determine how well they recover from summer stress and how prepared they are for the upcoming planting season.

At ATX Trees, we know that late summer tree care in Central Texas is about assessment, maintenance, and preparation. This guide covers everything you need to do this August to keep your trees healthy and set your landscape up for success.

Assess Your Trees for Summer Stress

After months of extreme heat, your trees may be showing signs of stress. August is the perfect time to walk your property and evaluate each tree's condition. Early detection of problems can prevent long-term damage.

What to look for:

Leaf Curl or Scorch: Leaves curling inward or brown, crispy edges indicate heat stress or underwatering.
Thinning Canopy: If you can see more sky through the branches than usual, your tree may be struggling.
Premature Leaf Drop: Trees shedding leaves in summer are stressed and conserving energy.
Cracks or Wounds: Inspect trunks and major limbs for cracks, peeling bark, or signs of disease.
Pest Activity: Stressed trees attract pests. Look for spider mites, aphids, or scale insects.

What to do:

Deep Water Immediately: If you see signs of stress, give your tree a deep, slow soak at the drip line.
Add Mulch: A fresh layer of organic mulch (2-4 inches) helps retain soil moisture and regulate temperature.
Monitor Closely: Check stressed trees weekly and adjust watering as needed.

Prepare for Fall Planting (It's Coming Soon!)

August is the ideal time to start planning for fall planting. The best time to plant trees in Central Texas is October through November, when cooler air and warm soil create perfect conditions for root establishment.

Why you should start planning now:

Best Selection: The most popular trees sell out quickly in the fall. By planning now, you can reserve your preferred species.
Soil Preparation: Preparing your soil a month before planting gives the soil biome time to adapt.
Secure Installation Dates: Fall is our busiest planting season. Booking early ensures you get your preferred dates.
Beat the Rush: Avoid the last-minute scramble by planning your project now.

Our most popular fall planting trees:

Lacey Oak – Our Central Texas Superstar. Drought-tolerant with stunning blue-green foliage.
Live Oak – The iconic Texas shade tree. A legacy that lasts for generations.
Monterrey Oak – Fast-growing shade with excellent adaptability.
Magnolia (DD Blanchard & Little Gem) – Evergreen privacy with year-round beauty.
Mexican Sycamore – Fast shade with striking white bark.

Essential Late Summer Care Tasks

While you are assessing your trees and planning for fall, there are several care tasks to complete this August.

1. Water Deeply and Consistently

Even in August, deep watering remains the most important aspect of late summer tree care in Central Texas. Shallow watering encourages weak surface roots, while deep watering promotes strong, drought-resistant root systems.

How to water correctly:

Water at the drip line (the edge of the canopy), not against the trunk.
Use a soaker hose, drip line, or slow trickle hose.
Water slowly for 2-4 hours per large tree.
Aim to saturate the soil to a depth of 12-18 inches.
Water in the early morning (5-10 AM) to minimize evaporation.

How much water do trees need?

Tree Size	Water Amount (per session)	Frequency (no rain)
Newly planted (1-3 years)	5-10 gallons	Every 3-5 days
Small (under 15 feet)	10-20 gallons	Every 7-10 days
Medium (15-30 feet)	20-40 gallons	Every 7-14 days
Large (30+ feet)	40-80 gallons	Every 10-14 days

Watering during heat waves: During prolonged heat waves, you may need to water more frequently depending on your soil's moisture level. Sandy soils need more frequent watering, while clay soils hold moisture longer.

2. Refresh Mulch for Summer Protection

A 2-4 inch layer of organic mulch is your tree's best defense against late summer heat. It conserves moisture, regulates soil temperature, and suppresses weeds.

August mulch rules:

Maintain 3-4 inches of depth.
Spread to the drip line or beyond.
Keep mulch at least 6 inches away from the trunk.
Use shredded hardwood, native mulch, or pine bark.

3. Prune with Caution

August is a safe time for light pruning, especially for oaks. The oak wilt transmission season ended on June 30, and it is now safe to prune oaks through January.

August pruning guidelines:

Light corrective pruning can address water sprouts, crossing branches, and weight reduction on overextended limbs.
Remove dead or damaged branches to reduce disease and storm hazards.
Avoid major reduction pruning during peak heat since trees are already stressed.
For oaks: Seal all cuts with latex paint within minutes to prevent disease.

4. Monitor for Pests and Diseases

August is peak stress season for trees, making them more vulnerable to pests and diseases.

Common late summer pests:

Spider mites: Fine webbing and stippled leaves. Hose off with water.
Aphids: Sticky honeydew and curled leaves. Use insecticidal soap.
Scale: Bumps on branches and sooty mold. Apply horticultural oil (early morning, below 90°F).

5. Avoid Fertilizing in Extreme Heat

Fertilizing during the hottest months can burn roots and stimulate vulnerable new growth. Hold off until fall when temperatures cool and trees can use the nutrients more effectively.

Regional Late Summer Tree Care Tips

Dripping Springs (Rocky Limestone Soil)

Challenge: Rocky soil drains quickly and cannot hold much moisture. Rocks absorb and radiate heat.

Tips for Dripping Springs:

Water more frequently (every 5-7 days) as rocky soil cannot hold moisture.
Use drip irrigation or soaker hoses (not sprinklers).
Mulch 4 inches deep to slow evaporation.
Create watering basins (soil berms) around each tree.

Fredericksburg (Thin Limestone Soil)

Challenge: Shallow soil limits root depth. Water sits in pockets, not evenly distributed.

Tips for Fredericksburg:

Use deep root watering tools (probes or long thin tubes).
Water at the base of each tree, not over bare rock.
Group trees together to create shared moisture zones.
Mulch heavily (4 inches) over the entire root zone.

San Antonio (Urban Clay Soil)

Challenge: Clay soil cracks when dry, exposing roots to heat. Pavement and buildings radiate extra heat.

Tips for San Antonio:

Water very slowly (clay absorbs at about 1 inch per hour).
Use drip irrigation or low-angle sprinklers to prevent runoff.
Mulch 4 inches thick, wider than the canopy if possible.
Fill cracks with compost or mulch to protect roots.

What Not to Do in August

Do not overwater – soggy soil causes root rot. Check soil moisture before watering.
Do not fertilize – new growth will scorch in summer heat.
Do not use weed killer near trees – chemicals stress roots.
Do not allow heavy traffic under trees – compacted soil holds less water.
Do not prune oaks without sealing cuts – always paint oak wounds immediately.

When to Call ATX Trees

If you need help with late summer tree care in Central Texas, we offer:

Tree health assessments to catch stress early.
Deep root watering for valuable or stressed trees.
Irrigation system installation (drip for trees).
Mulch delivery (bagged or bulk).
Pest identification and treatment.
Fall planting consultations to plan your October-November projects.

We serve Dripping Springs, Fredericksburg, San Antonio, and all surrounding areas.

Visit Our Nurseries for Late Summer Supplies

Get everything you need for late summer tree care in Central Texas at either Dripping Springs location:

Soaker hoses and drip irrigation kits.
Organic mulch (by the bag or truckload).
Shade cloth and stakes.
Moisture meters and watering timers.
Expert advice for your specific trees.

24250 Ranch Road 12, Dripping Springs, TX 78620

2201 W Hwy 290, Dripping Springs, TX 78620

August hours: Open seven days a week, 8 AM to 6 PM.

Your Trees Are Ready for the Next Season

Late summer tree care in Central Texas is about assessment, maintenance, and preparation. The work you do this month will help your trees recover from summer stress and get ready for the ideal fall planting season just ahead.

The trees in your Dripping Springs, Fredericksburg, or San Antonio yard have endured the worst of the Texas summer. With your help and care, they will recover and thrive.

Contact ATX Trees today for a late summer tree health check, to stock up on supplies, or to start planning your fall planting project. Let's get your landscape ready for the seasons ahead.