If you love plants and want to learn more about how to grow them, where to get them, and how to use them in your garden, we cordially invite you to join us for ...

The Hardy Plant Society Book Sale

Open to Members and Non-Members

Sale Starts Thursday, October 1st. These books make a wonderful holiday gift!

We are selling a wonderful selection of books for your reading pleasure and horticultural information. Copies of each book are limited. Here is our list of books and associated quantities and price. They are discounted 20% and Pa sales 6% tax is included.

Click here for list of book titles, prices, reviews, available quantities and order forms (available on 10/1).

Please contact Mary Ann Thomas at [email protected] with questions. 


Pop-Up Events 

Pop-ups are member-sponsored events that don’t fall under the categories of our established Special Interest Groups. They can include members and nonmembers as participants and take place throughout the year. They cover a wide variety of interests - for example: workshops, garden tours including historical sites, and day trips. 

Upcoming Pop-Up Events
Growing Hardy Camellias in the Delaware Valley - A Workshop with Charles Cresson at his garden, Hedgleigh Spring  
Members have a choice of 4 Sessions to Choose From:
Workshop #1 Saturday, October 31 noon to 2 pm - One spot has opened up. Click here for details and registration.
Workshop #2 Saturday, October 31 3 to 5 pm - This event is full.  Click here for details and waitlist info.
Workshop #3 Wednesday, November 4 noon to 2 -  This event is full. Click here for details and waitlist info.
Workshop #4 Wednesday, November 4 3 to 5 pm - click here for details and registration

Join local expert Charles Cresson in his garden at the peak of fall bloom, featuring specimens up to 15 feet tall, to learn how to select the best varieties and where to site them in the Landscape. Members Only - 6 registrants per session. 


HPS Programs


Our enthusiastic and knowledgeable Program Chairperson scouts speakers and topics both nearby, and from across the country. Our lecturers include horticulturalists, authors, researchers and landscape designers. Wholesale shopping opportunities (for members only) are also scheduled.




Upcoming HPS Program Events

Virtual Event: "Only the Best - Top Rated Perennials" by Richard Hawke - Sunday, November 1 2:00 p.m.
This event is a partnership between the Hardy Plant Society and Scott Arboretum. Members and Non-members welcome. Click here to register on the Scott Arboretum website.

Virtual Joanne Walkovic Memorial Lecture: "A Guide to Restoring the Little Things That Run the World” by Doug Tallamy - Sunday, January 10, 2021 2:00 p.m.
This event is a partnership between the Hardy Plant Society and Scott Arboretum. Members and Non-members welcome. A link to the registration page on the Scott Arboretum website will be provided when available.


Special Interest Groups (SIGs)

SIGs are events sponsored by either our Native Plant SIG Leader, Margaret Moore, or our Perennial Plant SIG Leader, Mary Ann Thomas. We are always looking for new SIG Leaders who have an interest in a specific aspect of gardening. 

No SIG Events are scheduled at this time.




HPS/MAG COVID-19 PRACTICES AND POLICIES: All HPS/MAG Events are subject to COVID "Stop the Spread" measures. Masks are mandatory and 6 foot social distancing will be followed.

Additionally, every registrant must sign a Coronavirus Waiver prior to attending any event. Click here for the waiver. If possible, please download a copy of the waiver, sign it and bring it with you to the event. The event coordinator will have extra copies available for registrants that need them.