Question 1

Why do I need an ISA Certified Arborist rather than a standard tree service?

Accepted Answer

Hiring an ISA Certified Arborist ensures your trees are evaluated by a formally trained professional who understands the biology and biomechanics of the canopy. We provide science-based pruning, advanced disease diagnosis, and structural risk assessments. Standard landscaping crews often use harmful practices like topping or climbing spikes on live trunks, causing irreversible damage.

Question 2

Do I need a permit to remove a tree on my property in San Jose?

Accepted Answer

It depends on the size, species, and location of the tree. San Jose and surrounding Santa Clara County municipalities have ordinances protecting Heritage and Ordinance-size trees, even on private property. We provide the official arborist reports and risk assessments cities require to approve protected tree removals.

Question 3

What are the most common tree diseases and pests affecting the South Bay?

Accepted Answer

Sudden Oak Death is a major concern for native oak populations across the valley and Peninsula. We also see severe seasonal outbreaks of Western Tussock Moth caterpillars, which defoliate and stress mature shade trees. Early diagnosis and targeted treatment are critical.

Question 4

Is it safe to prune or remove trees during the winter months?

Accepted Answer

Yes. Winter is the dormant season for many local species and ideal for heavy structural pruning. However, winter brings high winds and saturated clay soils, which is when most root failures and branch breaks occur. A structural assessment before heavy storms is the safest course of action.

San Jose Certified Arborist & Tree Service

Healthy Soil Revival

Pure Waters Campaign

Clean Air Initiative