Kasey Billingsley

Director of Education

Kasey Billingsley
Founder & Principal Consultant, Harmony Horticultural Consulting

Kasey’s horticultural roots run deep—literally. Growing up on her family’s citrus farm in southwestern Arizona, she developed an early appreciation for how plants, people, and the desert environment interact. That foundation ignited a lifelong passion for cultivating healthy landscapes and thriving ecosystems.

Kasey earned her degree in Plant Biology from Arizona State University, specializing in Urban Horticulture. Her career began with hands-on experience across multiple sectors of the landscaping industry, giving her a well-rounded understanding of plant care, design, and management. In 2008, she founded Harmony Horticultural Consulting to bridge the gap between science-based plant care and the practical realities of landscape management.

Over the past 16 years, Kasey has become a trusted leader in diagnosing plant health issues and guiding property owners, estate managers, and landscape professionals toward long-term, sustainable solutions. Her expertise includes water management, soil fertility strategies, pruning best practices, and integrated pest management. With her guidance, countless landscapes have become healthier, more resilient, and more beautiful year-round.

Today, Harmony Horticulture is a respected consulting team serving the Phoenix metro area and beyond, known for its proactive, science-driven approach to plant care. Kasey’s blend of academic knowledge and practical field experience continues to make her an invaluable resource for clients seeking healthier, more vibrant landscapes.

Credentials & Affiliations:

• PMD Certified Applicator #070186
• ISA Certified Arborist #WE-8811A
• SLM Certified
• ACLP Certified
• CLIA Trained
• Education Director, Board of Directors, Arizona Landscape Contractors’ Association