The Barnes Arboretum

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300 N Latches Lane
Merion Station, PA 19066
The Barnes Arboretum

The Barnes Foundation's Arboretum Schoo
l has been educating students in the field of horticulture since its creation under Laura Leggett Barnes in 1940. Experienced instructors integrate a combination of classroom lectures, field study, hands-on practice, and visits to other gardens in this comprehensive program incorporating science, design, and plant knowledge. Upon successful completion of the three-year program that meets one day per week, students receive a certificate of merit in horticulture.

Workshops and Lectures:
Workshop and lectures include:
Horticulture certificate program, Make More Plants: propagation workshop , Floral Design & Contemporary Botanical Illustration.Learn more

Certificate program
Our three-year certificate program takes a comprehensive approach to horticultural science, methods, and design. Learn more

Our campus in Merion, originally purchased by Dr. Barnes and his wife Laura in 1922, features a Paul Philippe Cret designed home and gallery surrounded by a 12-acre Arboretum.

The entire arboretum can be easily walked in a visit, its magnificent collection, astonishingly large and diverse for the size of the property, is worth lingering over: 3,000 unusual species of woody plants, including collections of Stewartia, Aesculus, Phellodendron, Clethra, Magnolia, Viburnum, and Lilac, as well as 31 state champion trees. Other collections include roses, peonies, hostas, medicinal plants, and over 200 hardy ferns. Made up of her favorite types of plants, the collection was also assembled by Mrs. Barnes specifically for teaching purposes. A herbarium of more than 10,000 specimens complements the living collection and is available to the Foundation's horticulture students and other scholars by appointment.


Horticulture certificate program

Year 1

Mondays, September 12, 2016–May 8, 2017

8:30 am–4:15 pm

$2,750; members $2,475

Weed Science : Workshop is eligible for 14 APLD CEUs and 14 PCH CEUs

The three-year certificate program takes a comprehensive approach to horticultural science, methods, and design. Students spend one day a week during the 28-week academic year attending all their courses: first year is taught on Mondays, second year on Tuesdays, and third year on Wednesdays. Book online at or call 215-278-7200.


Make More Plants: propagation workshop

Wednesday, July 27

10 am–4 pm

$90; members $81

Instructor: Bruce Keyser, owner of Keyser Design Associates

Your Small Space Garden: Workshop is eligible for 2.5 ALPD CEUs.

The best time of year to propagate many trees and shrubs is midsummer. Learn techniques for successfully rooting greenwood cuttings using plant material from the Barnes Arboretum’s living collections. Make your own sweatbox, key to successfully rooting the cuttings you take home. Fee includes all materials; bring your lunch.

Book online or call 215.278.7200.

Floral Design

Rachel Burlington, Barnes gardener and Pennsylvania certified horticulturist

Fridays, September 16–30 (3 classes)

10 am–12:30 pm

$250; members $225

Workshop is eligible for 9 APLD CEUs and 9 PCH CEUs.

Learn to create floral masterpieces that you can construct in your own home. Start with the basic design concepts and mechanics, then learn specialized forms of floral design, including body flowers (corsages, boutonnieres, etc.) and succulent wreath-making.

Book online or call 215.278.7200. 

Contemporary Botanical Illustration

Marylyn Waltzer, certified botanical illustrator

Thursdays, September 15–November 17 (10 classes)

1–4 pm

$400; members $360

Workshop is eligible for 15 APLD CEU'S

Using pencil and watercolor, develop the skills to create highly detailed, expressive, and accurate botanical compositions. Learn how colors interact in watercolor and explore floral structure, form, and elements of composition. All levels welcome.

Book online or call 215.278.7200.


Visit our website:
The Barnes Arboretum | 300 N Latches Lane Merion Station, PA 19066 USA | 215x-278x-7350
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Pennsylvania Landscape & Nursery Association - All Rights Reserved.
1707 South Cameron Street, Harrisburg, PA 17104-3100
P: 717.238.1673 or 800.898.3411 F: 717.238.1675

The Pennsylvania Landscape & Nursery Association (PLNA) is the leading trade association representing Pennsylvania's $6.8 billion green industry. Its member's include landscape contractors, retail garden centers, wholesale nurseries and greenhouses.