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Breathing New Life Into Landscapes

Discover how to renovate an existing landscape or garden into a thriving and beautiful outdoor space. Learn how to evaluate the current landscape, identify areas for improvement, and consider your desired outcome to transform the space. Find creative ways to breathe new life into existing features like patios, walkways, and planting beds. Gain insight into choosing the right plants to complement existing ones, filling gaps, and creating a cohesive look. Discover cost-effective ways to achieve your renovation goals without breaking the bank. You will have the opportunity to develop a personalized renovation plan for an existing landscape. Prerequisites: Botany 1 and one Ornamental Plant Materials core course. The School’s CEUs=4 hours GDC elective
2 Wednesdays, September 9 – September 16, 2026, 6:30 – 8:30 p.m.
Diane Smith, owner, The Perennial Professionals
Classroom 1, Learning Center
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9/9/2026 6:30 PM - 8:30 PM
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Elevate your garden designs by incorporating hardscape elements. Structural components of a landscape provide both functional and aesthetic benefits. Create garden design plans that integrate hardscape structures such as paving, landscape lighting, and garden walls to achieve your landscape design goals. The last class is a field trip to view examples of content learned in class. Portions of this class will be taught online via Zoom. All registrations must be submitted online two days before your class starts. Registered students will receive login instructions one day in advance. A supply list will be sent. Prerequisites: Graphics, Introduction to Professional Practice, Principles of Garden Design. PGL 2 and GDC requirement
9 Thursdays, September 10 - November 5, 2026, 6:30 – 9 p.m. (online) and 2 Saturdays, October 3 & 24, 2026, 1 - 4 p.m. (Classroom 1) Paul Laiblin, landscape designer and garden consultant Classroom 1, Learning Center |
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9/10/2026 6:30 PM - 9:00 PM
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Cottage Gardens | Past and Present
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Cottage gardens are known for their informal, colorful jumble of flowers, foliage, herbs, and edible plants. Improve your understanding of design elements that can offer lower-maintenance, exuberant plantings suited for gardens of any size.
Saturday, September 19, 2026, 10 a.m. – Noon Nina Kozial, horticulturist and writer Design Studio, Regenstein Center |
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9/19/2026 10:00 AM - 12:00 PM
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Wellness Garden Design | Online
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Healing or wellness gardens are developed in evidence-informed ways. Intentional design addresses accessibility to make a space that is functional, safe, and available for a myriad of users. You will examine a wide range of plantings, features, and case studies of successful wellness gardens and explore some of the research that guides the design decisions. This class will be taught online via Zoom. All registrations must be submitted online two days before your class starts. Registered students will receive login instructions one day in advance. The School’s CEUs=2 hours GDC elective
Saturday, September 26, 2026, 11 a.m. – 1 p.m. Mark Dwyer, owner, Landscape Prescriptions by MD Online Course |
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9/26/2026 11:00 AM - 1:00 PM
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Apply knowledge and skills developed in previous design courses toward a working understanding of planting design. Acquire a critical understanding of how to enhance your planting design through color and texture, plant combinations, planting bed layout, installation techniques, and maintenance practices. A supply list will be sent. Prerequisites: Four OPC core courses, Graphics, Introduction to Professional Practice, Principles of Garden Design. Strongly recommended Prerequisite: Hardscape Basics GDC requirement
9 Wednesdays, October 7 – December 16, 2026, 6:30 – 9 p.m. and 2 Saturdays, October 24 and November 7, 2026, 1:30 – 4:30 p.m. (no class November 11 and 25)
Diane Smith, owner, The Perennial Professionals
Classroom 4, Learning Center
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10/7/2026 6:30 PM - 9:00 PM
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Exploring Calder Gardens in Philadelphia

New! Explore the garden design, installation, and management of the new Philadelphia art institution, Calder Gardens. Opened in September 2025, Calder Gardens is a museum and garden dedicated to acclaimed twentieth-century artist and sculptor Alexander Calder and set within the dynamic landscape of world-renowned garden designer Piet Oudolf. Discover the evolving interplay between art, architecture, and nature that builds on the artist’s enduring legacy.
Wednesday, October 14, 2026, 10 – 11:15 a.m.
Erin Monda, horticulture manager, Calder Gardens
Linnaeus Room, Regenstein Center
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10/14/2026 10:00 AM - 11:15 AM
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Designing the Four Seasons Garden | Online

Think beyond seasonal blooming to create four seasons of beauty and interest in your garden. Learn how to choose plants for their form, texture, and strong winter presence, in addition to their flowering sequence. The result will be a landscape that remains visually engaging year-round, using a diverse selection of plants and garden features. This class will be taught online via Zoom. All registrations must be submitted online two days before your class starts. Registered students will receive login instructions one day in advance.
Wednesday, October 21, 2026, 6 – 8 p.m.
Mark Dwyer, owner, Landscape Prescriptions by MD
Online Course
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10/21/2026 6:00 PM - 8:00 PM
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Maximizing Texture in the Garden | Online

While a progression of interesting flowers and colorful foliage is appreciated in the garden, the visual texture of your compositions is equally important. You will explore textural examples of plants and combinations that take full advantage of your garden for a bold presence. This class will be taught online via Zoom. All registrations must be submitted online two days before your class starts. Registered students will receive login instructions one day in advance. The School’s CEUs=2 hours GDC elective
Tuesday, November 17, 2026, 6:30 – 8:30 p.m.
Mark Dwyer, owner, Landscape Prescriptions by MD
Online Course
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11/17/2026 6:30 PM - 8:30 PM
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Conifers | Form, Texture, and Impact | Online

New! Conifers offer immense variety in form, color, and texture due to the array of species. Discover a wide selection of conifers and how to best use them as accents, for screening, as focal points, and in a mixed border. The thoughtful and intentional use of conifers will make your garden more beautiful. This class will be taught online via Zoom. All registrations must be submitted online two days before your class starts. Registered students will receive login instructions one day in advance. The School’s CEUs=2 hours GDC elective
Tuesday, December 1, 2026, 6:30 – 8:30 p.m.
Mark Dwyer, owner, Landscape Prescriptions by MD
Online Course
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12/1/2026 6:30 PM - 8:30 PM
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The Business of Gardening and Landscaping

Turn your passion into profit. Learn the principles and practices of operating a successful landscape design and installation business. This course is designed for both prospective and established business owners who want to have a more profitable operation. You will explore the components of pricing, how to determine your overhead expenses, estimating the costs of a job, common pitfalls of quoting jobs, and how to price projects accurately. You will also learn purchasing strategies and how to source materials. The School’s CEUs=3 hours GDC elective
Tuesday, December 8, 2026, 6 – 9 p.m.
Diane Smith, owner, The Perennial Professionals
Classroom 2, Learning Center
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12/8/2026 6:00 PM - 9:00 PM
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Garden Design | An Artistic Approach | Online

New! Gardeners are artists, painting their landscape with plants. Learn how color theory, plant combinations, hardscape, and garden features all play a part in garden design. Explore uses of plants and art in public and private landscapes. Get inspired to use all the tools discussed in class to plan your own stunning artwork—your garden. This class will be taught online via Zoom. All registrations must be submitted online two days before your class starts. Registered students will receive login instructions one day in advance.
Wednesday, January 20, 2027, 6 – 8 p.m.
Nina Kozial, horticulturist and writer
Online Course
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1/20/2027 6:00 PM - 8:00 PM
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