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Houseplants, Succulents, and Cacti

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Identification and Use – Online Continuing Education



March 21 – May 2, 2022 
October 10 – November 21, 2022 

About This Class

Have you ever wondered what the holes in a swiss-cheese-plant leaf are called, and why they’re there? Did you know that there are cacti in tropical rainforests? How do you tell the difference between a Thanksgiving cactus and a Christmas Cactus? Join Longwood Gardens and NC State University Department of Horticultural Science for six weeks for this fully-online introduction to houseplants, succulents, and cacti. These species are some of the most unique and fascinating in the plant kingdom and have a botanical vocabulary all their own.

In this class, students will explore 50 popular houseplants, succulents, and cacti as they learn the fundamentals of plant identification. Through engaging online live sessions, photo stories, Longwood Gardens Plant Fact pages, discussion forums, and hundreds of beautiful images, you’ll learn the key identifying characteristics of these plants, gain skills to identify new plants you’ll encounter outside this class, and learn some fun facts along the way.

This class is fully online and self-paced! Set your own schedule, and work at your own pace. You can participate anywhere that you have access to the internet, and you will have access to the course resources 24/7 for the entire six weeks of the class and for six months after the course ends. There are no required presentations or any set times that you will need to meet online. There will be at least two scheduled live sessions with the instructor and guest speakers, but they will be recorded and available to access at any time. For an additional fee, you may choose to purchase an optional print copy of the online e-book that is included with the course. We recommend accessing the course via Google Chrome on a computer or tablet for the best functionality.

We can’t wait to see you online!


Usually offered the second week of March and October.


Fully online.

This is one of four plant ID courses, each focused on different plant groupings that include some favorites as well as a few introductions from the research and breeding programs at Longwood Gardens and North Carolina State University. Below are links to the other ID classes in the series, as well as Understanding Plants:

Additional Information