About ALCCSince 1962, the Associated Landscape Contractors of Colorado has been the leading voice for the green industry in Colorado. Mission & VisionMission: To advance the landscape industry in Colorado through education, advocacy, and professional standards. Vision: To be the premier resource for landscape professionals, fostering sustainable practices, strong businesses, and a thriving green industry across Colorado. Who We AreFor 60 years, ALCC has helped the built landscape survive in Colorado while promoting responsible use of water and other resources. Our member companies are experts in the landscape industry. If you are embarking on a do-it-yourself outdoor project, hiring one of our experts for a consultation before you begin will be a wise first step. A variety of landscape endeavors are best left to the experts, and we've provided guidelines for knowing when to engage with one of our professional members in our How-to section for consumers. You'll also find our Find A Pro directory useful in helping to choose the right landscape company for your needs. Member Standards of ConductWhen you hire an ALCC member, you get a company that is better by nature. ALCC members are professionals who strive to continually improve their businesses and their service to customers.
2026 Board of DirectorsOur volunteer board provides strategic leadership and guidance to ALCC. PRESIDENT VICE PRESIDENT SECRETARY/TREASURER PAST PRESIDENT At-Large Directors Joshua Pool, Timberline Landscaping, Colorado Springs Adam Rice, Brightview, Denver Mari Medrano Mejia, CoCal Landscape, Denver Jake Leman, Singing Hills Landscape, Inc., Aurora LeAnn Ostheimer, Lifescape Colorado, Denver Brison Bishop, Zak George Landscaping, Fort Collins Nicole Stone, LMI Landscapes, Commerce City 2026 State Board (continue term) Adam Rice Bluestem Landworks, Sedalia Meet Our StaffJohn McMahonChief Executive Officer John McMahon brings extensive association management and outdoor industry experience to ALCC. Most recently he served as executive director of the National Ski Patrol. His background includes leadership roles with Breckenridge Tourism Office, Vail Resorts, Loveland Ski Area, and as deputy director of marketing for California State Parks. A Colorado native raised in Aspen, John is passionate about the outdoors and enjoys paddle boarding with his border collie Zoe. He and his wife have two grown children. Tammy DiFalcoMembership & Sponsorship Director [email protected]Tammy works closely with members and sponsors to deliver exceptional value and ensure the best possible member experience. Her favorite part of the role is connecting with ALCC’s vibrant community. She brings previous association membership experience and holds a B.S. in Business Administration from Colorado State University. Tammy enjoys spending time with her family and exploring everything Colorado’s outdoors has to offer. Melissa EmdinPrograms & Education Director [email protected]Melissa oversees the Landscape Industry Certification program, ProGreen EXPO speakers, the ELITE Awards, CEO Exchanges, and many other educational initiatives. She brings more than a decade of program management and association experience, with a strong focus on certification. Melissa is passionate about providing relevant education to meet members’ needs. She enjoys spending time with her husband Will, sons Owen and Oliver, and their dog Parker. Heather SmithCommunications Manager [email protected]Heather Smith is a wellness trends expert with over two decades of experience communicating the science of healthy living to the public. As a national TV news contributor and founder of LACQUER inc., she has appeared on NBC, CBS, ABC, FOX, and Cheddar News, and has been featured in The New York Times. She brings custom wellness events to Google and the X Games and recently launched theWELLBEINGedge to help companies support employee wellness. Heather holds a Master’s in Biochemical & Molecular Nutrition from Tufts University and a Bachelor’s in Exercise Physiology from UMass Amherst. She lives in Boulder with her husband and three boys. Rachael ColemanOffice Manager [email protected]Rachael handles telephone inquiries, event marketing and registration, bookstore order fulfillment, and provides support across all ALCC departments. With a background in finance and high-level administrative roles in New York City, she brings strong customer service skills and retail management experience. Her attention to detail and friendly approach make her an invaluable resource for members and staff alike. Ready to learn more or get involved? Visit the Member Benefits |