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Arborist USA Serving North Texas with science-based tree care. Arborist USA is a leader in the tree disease and treating sick trees in Fort worth.

Henry G Friar | 817-880-6130
Arborist USA | ISA Certified Arborist® TX-270627A
Professional tree care specializing in diagnostics, plant healthcare, structural pruning & tree risk management. We are also a leader in tree removal, tree trimming and total tree health and tree care. We offer homestead and commercial tree services. Your tree will be in good hand will arborist USA.

10/09/2026

682-204-4746
https://www.arboristusa.com/how-to-control-disease-in-leyland-cypress-trees-weatherford-texas/

LEYLAND CYPRESS DISEASE & SPIDER MITE CONTROL | WEATHERFORD, TEXAS

Hello Community, this is Henry G. Friar, ISA Certified Arborist® TX-270627A, with Arborist USA.

Today we’re in Weatherford, Texas, inspecting Leyland Cypress trees experiencing significant spider mite pressure, suspected Diplodia spp. fungal disease, and progressive branch dieback.

Spider mites damage plant cells, causing bronzing, discoloration, and necrotic foliage. Suspected fungal pathogens can contribute to branch dieback, particularly when trees are already experiencing environmental stress.

Our Plant Healthcare approach focuses on treating the underlying causes.

We’re recommending an Integrated Pest Management (IPM) program, appropriate fungal disease management, selective pruning to improve airflow, and proper irrigation practices.

Excessive watering can cause root-zone hypoxia, while drought stress reduces photosynthesis and carbohydrate production.

We’re also recommending 2–3 inches of coarse organic mulch to conserve moisture and regulate soil temperatures while keeping the root flare exposed.

Remember, healthy soil supports healthy roots, and healthy roots support healthy trees.

ARBORIST USA — WE SAVE SICK TREES.

10/06/2026

817-880-6130 |

https://www.arboristusa.com/identifying-oak-wilt-live-oaks-southlake-texas/

Hello Community, this is Henry G Friar, ISA Certified Arborist® TX-270627A with Arborist USA.

Today we’re talking about identifying Oak Wilt in Southern Live Oaks in Southlake, Texas—one of the most serious tree-health problems we encounter in North Texas.

Oak Wilt is a vascular disease caused by the fungal pathogen Bretziella fagacearum. One of the important symptoms we look for in Southern Live Oaks is veinal necrosis. This is where the leaf begins developing reddish-brown necrotic tissue that follows the midrib and secondary veins while portions of the surrounding leaf tissue may remain green.

But identifying Oak Wilt involves much more than looking at one leaf.

We evaluate the entire crown and canopy, premature leaf drop, progression of symptoms, neighboring oak trees, recent pruning or wounds, and the possibility of interconnected root systems.

New Oak Wilt infection centers can develop when sap-feeding beetles carry fungal spores to fresh wounds on susceptible oaks. Once the disease becomes established in a group of Live Oaks, it can become extremely difficult to manage because the pathogen can move underground through interconnected roots and natural root grafts.

That is why prevention and early identification matter. By the time several neighboring Live Oaks begin declining, we may already be dealing with a much larger underground infection center.

A suspicious leaf does not automatically confirm Oak Wilt, but it can give us an important diagnostic clue that tells us further investigation is necessary.

I put together a detailed article explaining what Oak Wilt is, what veinal necrosis looks like, how the disease spreads, the role of sap-feeding beetles and root grafts, and what homeowners can do to protect valuable Live Oaks.

Read the full article:

Identifying Oak Wilt in Live Oaks — Southlake, Texas⁠

Arborist USA — DFW Tree Doctors
We Save Sick Trees

10/03/2026

Our learning never stops! This is in order to better serve our community and our clients. The more equipped, we are the better and healthier your landscape will be.

Henry G Friar - Arborist

09/30/2026

Henry G. Friar
Arborist USA
ISA certified Arborist
TX - 270627A

09/29/2026

682-204-4746
https://www.arboristusa.com/soil-samples-plant-healthcare-westover-hills-texas/

Hello Community, this is Henry Friar with Arborist USA. Today we’re in Westover Hills, Texas, doing what I call Plant Healthcare forensics.

Before introducing a new well-water source into this landscape, we’re collecting baseline soil samples and sending them to Texas A&M. The water analysis has raised concerns about high pH and salt-related chemistry, so we’re not going to guess about how that water may affect valuable trees and plants.

We’re establishing a before-and-after comparison.

First, we document the existing soil chemistry. Then the water-treatment system will be implemented and the treated well water introduced into a controlled portion of the landscape.

Over the next 30 days, we’ll monitor the plants for warning signs such as leaf-tip burn, marginal necrosis, chlorosis, wilting, or premature defoliation. We’ll also continue monitoring soil conditions.

After approximately 30 days, we’ll return to the same area, collect another soil sample, and compare the laboratory results.

Did salinity increase? Did pH change? Are salts accumulating in the root zone? Are the plants responding negatively?

If the plants remain healthy and the laboratory numbers remain acceptable, we’ll have evidence that the treatment strategy is working. If we see abnormal plant injury or unfavorable soil chemistry, we’ll stop, retest, and begin ruling out causation before additional damage occurs.

That’s Plant Healthcare: establish the baseline, monitor the patient, retest, compare the evidence, and then make the next decision.

09/25/2026

682-204-4746
https://www.arboristusa.com/tips-new-tree-establishment-fort-worth-texas/

Hello Community, this is Henry Friar with Arborist USA. Today we’re in Fort Worth, Texas, talking about proper new tree establishment and why what happens underground during planting can determine the future of your tree.

Before a new tree goes into the ground, inspect the nursery root ball. Locate the true root flare, remove excess substrate when necessary, and identify circling or girdling roots before they become a major problem years later.

The planting area should be wide and shallow, giving new absorbing roots an opportunity to expand laterally into the surrounding native soil. Compacted and glazed soil around the planting hole should also be broken up to improve macroporosity, oxygen exchange, water infiltration, and root development.

Use the native soil as your primary backfill rather than creating a completely different soil environment around the root ball.

Don’t rush to remove the lower temporary branches either. Those branches help a young tree develop proper trunk taper and structural strength during establishment.

Finish with approximately 2–3 inches of coarse organic mulch, keep the mulch away from the root flare, and create an appropriate watering berm where needed.

Most importantly, monitor the water.

Newly planted trees need water AND oxygen. Too little water creates drought stress. Too much water can reduce soil oxygen and contribute to root-zone hypoxia.

Planting the tree is only the beginning.

Establishing a healthy root system is the real goal.

09/11/2026

682-204-4746
https://www.arboristusa.com/establishing-newly-planted-southern-magnolia-trees-proper-watering-in-southlake-texas/

Hello Community, this is Henry Friar with Arborist USA. Today we’re in Southlake, Texas, monitoring newly planted Southern Magnolias during the most critical stage of their development—root establishment.

During the first year, and especially the first three months after planting, proper watering can make the difference between a Magnolia successfully establishing or struggling for years.

I’m physically inspecting the soil from approximately 2 inches down to 12 inches, checking moisture throughout the root ball rather than simply looking at the soil surface.

Our goal is maintaining adequate moisture near field capacity without keeping the roots chronically saturated.

Remember, roots need two things:

Water and oxygen.

Too little water can cause hydraulic stress, stomatal closure, reduced photosynthesis, wilting, and root loss.

Too much water can fill the soil’s pore spaces, reduce oxygen availability, and contribute to root-zone hypoxia.

That’s why monitoring is so important. During establishment, irrigation should change with rainfall, temperature, drainage, and what we’re actually finding inside the root ball—not simply because an irrigation timer says it’s time to water.

If we get the water right, protect the root flare, maintain soil oxygen, and allow new roots to expand into the surrounding soil, these Magnolias will gradually become stronger and require less intensive maintenance.

Planting the tree is only the beginning. Establishing the root system is the real goal.

09/11/2026

682-204-4746
https://www.arboristusa.com/texas-pecan-tree-cabling-bracing-roanoke-texas/

Hello Community, this is Henry Friar with Arborist USA. Today we’re in Roanoke, Texas, working on a massive mature Texas Pecan with two codominant stems, included bark, and a developing fracture at the union.

This tree was originally scheduled for removal—but after evaluating the structure, we determined there was an opportunity to mitigate the risk and preserve decades of mature canopy.

Our approach combined proper structural pruning, through-rod bracing at the compromised union, and structural cabling higher in the canopy.

The bracing helps reduce separation at the weak union, while the cable helps limit excessive movement between the two dominant stems during high winds and severe weather. Strategic pruning also reduces end weight and leverage acting against the compromised attachment.

Not every fractured tree is automatically a lost tree.

When enough sound structure remains, proper diagnosis, load reduction, supplemental support systems, and continued monitoring may provide another option besides removal.

Preserve when possible. Mitigate the identified risk. Monitor the tree long-term.

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