CONTENTS THE BUSINESS MAGAZINE FOR COMMERCIAL GROWERS MARCH 2023 | VOLUME 33, NUMBER 3 28 On the Cover Dianthus 'American Pie Berry รก la 18 FEATURES 12 Production Unlock Your Lighting Potential LED lights are appealing, but they are not always the best option. Upgrading lights and implementing control systems require specific decisions for every greenhouse operation. By Marc van Iersel 16 Management Working With a Changing Labor Force The last few years have presented new challenges for growers looking to fill jobs and retain employees. By Heather Machovina 18 Technology Breeding Innovations Technologies in breeding advance to provide consistent, reliable and improved varieties. By Heather Machovina 22 2023 California Spring Trials Let's Have a Sneak Peek It's almost time to see the newest selections at California Spring Trials. Here's a preliminary look at some of the varieties that will be introduced for 2024. Compiled by Heather Machovina 28 Culture Report Ornamental Kale Crystal Series Glossy leaves and bright colors make ornamental kale a major player in fall markets. By Mike Huggett Miss our February issue? It's now available to view on gpnmag.com GREENHOUSE PRODUCT NEWS 3 30 COLUMNS 8 Perspectives Supporting Growers' Success Through Technical Services By Lauren Kilpatrick 10 Technically Speaking Advancements in Horticultural Lighting By Erik Runkle 30 Vaughn's View Distinctive and Resilient Perennials With Visual Impact - Part 1 By Vaughn Fletcher SPECIAL SECTION 1A 2023 Guide to Hemp Production DEPARTMENTS 4 Editor's Report 6 Industry News 27 Editors' Picks 36 Product Marketplace 39 Classifieds/Ad Index 40 Chat Room Mode' blooms with fragrant flowers that are pure white with magenta centers. View more 2024 variety introductions on page 22. (Photo: PlantHaven)http://www.gpnmag.com