CONTENTS THE BUSINESS MAGAZINE FOR COMMERCIAL GROWERS NOVEMBER/DECEMBER 2023 | VOLUME 33, NUMBER 11 10 On the Cover 24 2024 Guide to Cannabis Production SPECIAL SECTION 1A 2024 GUIDE TO CANNABIS PRODUCTION A SUPPLEMENT TO GREENHOUSE PRODUCT NEWS One first-year flowering perennial that is always in high demand is nepeta. This image highlights Nepeta 'Cat's Pajamas' from Walters Gardens. Photo by Laura Robles. 16 INSIDE 3A Plant Nutrition 6A Lighting and Water Usage Research 10A Automated Climate Control 12A State of the Industry FEATURES 12 Lighting Striving for Optimal Greenhouse Control Strategies growers can use to reduce the energy inputs needed By A.J. Both 16 Varieties First Year Flowering Perennials Beautiful options grown in one season with no vernalization required By Laura Robles 20 Great Lakes EXPO Biological Control Against Unwanted Pests Greenhouse education at Great Lakes EXPO By Madi Schafer 30 Product Marketplace 34 Classifieds/Ad Index COLUMNS 7 Duets Greenhouse Energy Curtains By Peter Konjoian and Julie Dean 10 Technically Speaking Crop Acclimation By Erik Runkle 24 Culture Report Romantica Ball Gown By Heidi Mortensen Miss our October issue? 26 Vaughn's View Perennial Parade By Vaughn Fletcher It's now available to view on gpnmag.com GREENHOUSE PRODUCT NEWS 3 DEPARTMENTS 4 Editor's Report 6 Industry Newshttp://www.gpnmag.com