Fertilizers and Formulations

Fertilizers and Formulations

IN-PERSON HORTICULTURE AND GARDENING CLASS
A lush, late-spring flower bed featuring a variety of red and pink flowers.
Amy Simon Berg

Dates & Prices

Saturday, July 12, 2025

9:30 am–12:30 pm 


Fee: $69

Fee for Innovators, Gardens Preferred, and Gardens Premium Members: $62


This class is intended as an adult learning experience. Find out more about our Family Learning experiences.

Registrations may be cancelled up to two weeks before the event, and your registration fee, less a $30 processing fee, will be refunded. Please note that refunds are not available for programs moved to scheduled inclement weather dates.

To notify us of your cancellation, email us or call 610-388-5454.

Register by July 7, 2025

Gardens Preferred, Gardens Premium Members and Innovators save on Continuing Education Courses

A 10% discount on classes will be applied automatically at the time of checkout. 

With guidance from educator and horticulturist Nancy Agnew, explore the fertility needs of indoor and outdoor potted plants; annual, perennial, and vegetable garden spaces; a few special needs plants (including ericaceous species and iron deficiencies); and basic turf fertility issues. Learn the differences between organic and inorganic sources of the essential elements. 

There will also be an opportunity for more interactive practice, as the class will include examining/interpreting products and labels, working out simple calculations, and finding solutions for any gardening questions. 

Location

The Grove Studios 104 & 105

Instructor

Nancy Agnew 

Nancy Agnew holds a Ph.D. in Horticulture from Kansas State University. She is a lifelong educator and has taught courses in herbaceous ornamentals, floriculture crop production, greenhouse management, tropical plants and interior landscaping, home horticulture, and horticultural mathematics. She is an instructor in Longwood's Professional Horticulture Program. Prior to her work at Longwood Gardens, Agnew served on the horticulture faculty at Iowa State University and managed the campus garden. Along with her co-authors, Agnew has written a book titled Mathematics for the Green Industry. In 2013, Agnew was presented the Teaching Award of Merit by Longwood Gardens and the North American Colleges and Teachers of Agriculture.