Consulting with integrity:
your plant health is our first priority
We believe in consulting with integrity - we believe your plant health takes precedence over profit.
Our goal at arbormark, inc. is to help you make well-informed decisions for your landscape; we will not recommend unnecessary services, treatments, or tests.
Our mission is to help make environmentally-responsible choices for our beloved urban forest.
Mark and Ashlyn are consulting arborists with specializations in pathology and integrated pest management.
Mark Tan
An ISA-certified arborist since 2017, Mark loves every aspect of tree care. His broad scope of experience includes felling and dragging brush in Iowa, laboratory research at UC Riverside, utility assessment throughout the San Gabriel Valley, and PSHB monitoring in the city of Claremont.
Mark is currently completing his graduate studies at Cal Poly Pomona - looking for ways to manage the Polyphagous Shot Hole Borer (Euwallacea whitfordiodendrus).
Ashlyn Pouvaranukoah
Ashlyn is a licensed Pest Control Adviser (PCA) and ISA-certified arborist with a passion for preserving plant health and protecting the environment. As a student at Cal Poly Pomona, Ashlyn was a laboratory assistant, worked with the Natural Resource Conservation Service (NRCS), and conducted Asian Citrus Psyllid (ACP) outreach - all while receiving Dean’s List honors.