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Ornamental Horticulture

Expand your knowledge of horticulture through our ornamental horticulture classes—open to everyone, both those in pursuit of a certificate and those who are not.

Students in our self-paced certificate program can earn sequential Certificates of Merit in Ornamental Horticulture (Level I, II, III) as their knowledge grows. Upon completion of each Certificate level, students will have mastered the identifying characteristics, habits, and growing information for 300 plants. Each certificate is earned consecutively and is based on meeting specific course requirements. Core courses (to ensure a base level of knowledge) in horticulture and plant sciences, along with electives, plant identification, and horticultural techniques are available for a tailor-made horticulture learning experience. Find out more.

Upcoming Classes

Math for the Garden and Landscape

6 sessions. This course helps you determine proper rates and quantities of fertilizers, pesticides, and compost to elevate your garden.

Plant Science: Soils

6 sessions. Learn how a plant’s development depends on the soil in which it’s growing.

Small Flowering Trees

6 sessions. Explore many species of flowering trees—the most eye-catching plants in season.

A Second Look at Spring

3 sessions. Explore underutilized plants that add impact when the rest of your garden is still dormant.


6 sessions. Identify characteristics, cultural requirements, and garden uses of common perennials.

Summer Flowering Bulbs

3 sessions. Focus on the identification and culture of bulbs, corms, rhizomes, and tubers that flower in summer.

Edible Plants

6 sessions. This course will concentrate on identification, culture, landscape use, and culinary use.

Aquatic Plants

3 sessions. Dive deep into these beautiful, mysterious plants and learn how to add a water garden to your property.