The following list of horticultural terms were originally compiled from two OSU Horticulture & Crop Science courses (Landscape Plants and General Plant Biology) and the OSU Extension Master Gardener training manual. The addition of images linked from other sites has been accomplished by students in our distance education course, "Introduction to Horticulture." See: http://hcs.osu.edu/hcs150/
Click on the link below to browse the glossary.
whirling wheel- the spinning device under a fertilizer spreader that distributes a product evenly over a yard.
Source:http://www.alltheweb.com module: 8, Lawns section: Spreaders and Rates page: 21, Fertilizer spreaders and application rates