Led by Bill Florek, this course, offered Saturdays, Feb. 24 to March 16, will focus on the fine points of controlling the greenhouse environment. Whether maintaining a conservatory collection of ornamental plants or producing greenhouse crops, participants will learn how to grow, care for and maintain plants in a greenhouse setting. The relationship between temperature, water, light, fertilization, plant health and diseases will be covered, with a strong emphasis on integrated pest management. This program is appropriate for homeowners with conservatories, glassed-in porches and greenhouses.