Resources
Tree care resources, all in one place
Plain-English reference pages for the US tree care industry. Start with the three guides below, then use the glossary, report, tools and FAQ.
Last reviewed: October 2026. Lirevon is not affiliated with these organizations.
The three guides
Tree care associations
ISA, TCIA, ASCA, the Arbor Day Foundation and state groups: what each one is and why an owner might join.
Read the guide →
Arborist certifications
Six well-known credentials explained, with tips on showing them on your website and Google profile.
Read the guide →
Tree care safety standards
ANSI Z133, ANSI A300 and OSHA in plain words, and why mentioning them honestly helps.
Read the guide →
More from Lirevon
Common questions
What is on this resources hub?
Three reference pages about tree care associations, arborist certifications and safety standards, plus links to our glossary, report, tools and FAQ.
Who are these pages for?
Tree service owners who want to understand the industry groups and credentials, and homeowners who want to know what the terms mean.
Is Lirevon connected to the ISA, TCIA or ASCA?
No. Lirevon is not affiliated with these organizations. We link to their official websites so you can get current details from the source.
Is this legal advice?
No. These pages give general information only. Ask a lawyer or safety professional about your own duties.
How current is the information?
Each page was last reviewed in October 2026. Programs and requirements change, so always check the official website.
What does Lirevon do?
Lirevon is a remote agency that sells missed-call text-back and marketing systems to US tree service companies. See the services page for details.
This page is general information, not legal advice.
Want people to find your crew?
Lirevon helps tree service companies answer every call and show their credentials online. See our services.