Tree health

Tree Health Care, Diagnosis, and Plant Health Concerns

Declining trees, pests, disease, irrigation problems, soil conditions, and construction impacts may require diagnosis before treatment.

Find tree health help
Tree professional using a root-zone inspection tool near a mature tree
Tree health concerns often require looking at the roots, soil, irrigation, trunk, and canopy together.

Signs a tree may need health evaluation

Symptoms may include thinning canopy, dieback, leaf discoloration, early leaf drop, wounds, pests, fungal growth, poor growth, soil problems, or changes after construction or trenching.

Diagnosis should come before treatment

Tree health problems can have multiple causes. Proper diagnosis helps avoid unnecessary treatments and helps determine whether cultural care, pruning, soil work, pest management, or removal is appropriate.

Information that helps the professional

Be ready to describe watering, recent construction, grade changes, pruning history, chemical exposure, pest observations, and when symptoms first appeared.

Keep learning

Related guides

Tree issues often overlap. These guides can help users compare service types, safety concerns, tree health questions, and when a written opinion may be useful.

What kind of arborist do I need? Compare consulting, hands-on tree care, risk, health, and emergency help. Tree risk assessment Understand when leaning, cracking, decay, defects, or nearby targets may justify a closer look. Consulting arborist reports Learn when reports, appraisals, permits, insurance, disputes, or expert opinions may be needed. Emergency tree service Know what to do first when storm damage, fallen trees, broken limbs, or immediate hazards are involved. Tree pruning and removal Review common questions about hands-on tree work, cleanup, access, permits, and scope. Tree care glossary Plain-language definitions for common arborist, pruning, risk, safety, forestry, and tree health terms. Forestry, timber, and arborists Understand when to look for an arborist, consulting arborist, forester, logger, or timber professional.