Recognizing Tree Problems and Solutions

by Kevin Sims | TLE Seminar

CEUs/PDHs: LACES 1,DPR 1,ISA 1,APLD 1,PGMS 1,NALP 1

Seminar Dates: November 12, 2025 3:00 PM

Seminar Cost: $45.00 Register Now

Seminar Description:
When trees begin to decline, early recognition of the underlying issue is essential.



This seminar equips attendees with the knowledge to diagnose common tree problems by focusing on the visual symptoms of pests, diseases, nutrient deficiencies, and environmental stress. The session will emphasize how to distinguish between biotic and abiotic disorders and provide a framework for making sound, science-based decisions. Participants will learn diagnostic cues that can be used in the field, understand thresholds for action, and gain clarity on when to manage an issue directly or escalate it to a specialist. This course is appropriate for ISA and DPR CEUs.

Learning Objectives:
1. Identify early signs and symptoms of common tree health issues, including pest infestations, nutrient deficiencies, and environmental stressors.
2. Differentiate between biotic and abiotic causes of tree decline using visual indicators and diagnostic reasoning.
3. Apply a systematic approach to evaluating tree problems and making informed decisions about treatment or referral.

Kevin Sims

If you're in the California tree care industry, the name Sims is a household name. Following in his parents footsteps, Kevin Sims carries on the family mission of being dedicated to the preservation, education, improved health, & safety of trees. 
Growing up in tree preservation gave Kevin a unique head-start in his education of trees. He earned various certifications at a very young age including his ISA Certified Arborist license, Pesticide Applicators license, and ISA Certified Tree Risk Assessor Certification. Today he is now the Senior Arborist and Owner of Sims Tree Health Specialists, Inc., a tree healthcare business that he runs alongside his wife, Nicole.  
As an educator, Kevin is also involved in many research projects & educational programs including the popular TLC Wildlife Aware Program founded and hosted at his family's botanical garden & arboretum known as the Sims Tree Learning Center (TLC). The Northern California branch of TLC hosts the family's 30-acre Olive Orchard where Kevin assists in the care and maintenance of the farm that produces and sells olive oil.   
During times that Kevin is not focused on trees, you can find him enjoying hobbies such as classic cars and golf.