CNGA LooseLeaf April/May19

2 LooseLeaf  April/May 2019 colorad o Our Mission To create opportunities for horticultural and associated industry professionals to collaboratively grow their businesses through fellowship, education, advocacy and certification. Cover Photo of Lake Otonawanda courtesy of Town of Ridgway, Colo. Dan Wise, CCNP President Fort Collins Wholesale Nursery 970.484.1289 [email protected] Kerri Dantino Secretary-Treasurer, President-Elect Little Valley Wholesale Nursery 303.659.6708 [email protected] Mandy Gerace Officer-at-Large Welby Gardens 303.288.3398 [email protected] Michelle Krumdieck, CCNP Sunshine Horticulture 303.301.5444 [email protected] Sharon Harding-Shaw, CCNP Harding Nursery 719.596.5712 [email protected] Harriett McMillan, CCNP Echter’s Garden Center & Nursery 303.424.7979 [email protected] Matt Edmundson Arbor Valley Nursery 303.654.1682 [email protected] Mike Bone, CGG Denver Botanic Gardens 720.865.3769 [email protected] Kent Broome Rocky Mountain Horticulture Services 720.417.9533 [email protected] Jim Klett, Ph.D. CSU Dept. of Horticulture &  Landscape Architecture 970.491.7179 [email protected] Allison Gault, MBA, CAE, Executive Director Colorado Nursery &  Greenhouse Association 303.758.6672 [email protected] Board of Directors Publisher Colorado Nursery & Greenhouse Association 959 S. Kipling Pkwy., Ste. 200 Lakewood, Colo. 80226 P: 303.758.6672 F: 303.758.6805 [email protected] Printer LLM Publications P.O. Box 91099 Portland, Ore. 97291 Display Advertising Katy Patterson, LLM Publications 503.445.2244  [email protected] Allison Gault, MBA, CAE Executive Director [email protected] Staff Kalsoum Abbasi Ron Arpin Kristen Burnside Andrew Erdmann Allison Gault, MBA, CAE Mallory Hiss Tanya Ishikawa Dr. Jim Klett Brad Lancaster Dr. Steven E. Newman Ben Northcutt Cathy Proctor Mark Ritterbush Mike Shleining, CCNP Les Shipley Greg Silkensen Hunter White Dan Wise, CCNP Katherine Yuhas Tanya Ishikawa Buffalo Trails Multimedia  Communications 303.819.7784 [email protected] Contributing Writers Directors Editor Ex-Officio Members Ben Northcutt Membership Manager [email protected] Charlotte Rose Administrative Coordinator [email protected] Ways to Promote Soil Sales The True Value of a Tree LooseLeaf  is published six times a year with issues scheduled for February/March, April/May, June/July, August/September, October/November, and December/January. Visit for classified advertisements, plant publications, upcoming events, a member directory, and much more! A Brief Guide to Water Information Design Trends in Water Conservation 12 14 16 24 In This Issue 3 Message from the Board Trusted, Professional Advocates for Smart Water Use 4 People Who Strengthen CNGA & the Industry 6 Member Profiles Arbor Valley Nursery • Harlequin’s Gardens 9 A Roundup of Water Forecasts for Summer 2019 13 Water Quality Concerns for Growers 15 Conservation with Rainwater & Greywater Harvesting 18 People – Our Greatest Resource How You Gonna Keep ‘Em on the Farm? 19 Best Practices Reducing Scale & Biofilms in Greenhouse Irrigation Systems 20 CSU Research Update Some Proven Herbaceous Perennials from CSU Trials 21 Safety Corner The Use, Handling & Storage of Crop Protection Chemicals 22 Funding Research & Education Securing Our Futures through Telling Our Story 22 Advertiser’s List 23 NewMembers, Calendar, & Classified Ads