The 2017-2018 Seed Exchange is open! Click here to go to our new SeedShop page where member may peruse the catalog, order, and pay securely online. The Seed Exchange is a HPS/MAG member benefit and you must log in to order. Click here to join HPS/MAG today! Order by Tuesday, January 16 to receive the reduced rate. FINAL ORDER DEADLINE IS TUESDAY, JANUARY 23. Checks received after January 23 will be returned.

Paper catalogs are being mailed to those who have requested them.

Click here to view a copy of the paper catalog. 

The Seed Exchange Committee encourages you to place your order from our beautiful new SeedShop and make your payment securely and electronically.

However, if  you prefer to submit paper forms, please click here to download and print the order form found in the catalog, and send it with your check for $20.00 ($25.00 if posted or postmarked after January 16) to Mary Ann Thomas, 8600 Elliston Drive, Wyndmoor PA 19038. Late orders close January 23. Checks received after January 23 will be returned.

REMINDER: The deadline for donated seed is January 9, 2016. Mail seeds to Loretta DeMarco, 603 Walnut Ln, Philadelphia PA 19128. Contact Carole Maher, at, or 215-884-1662, if you have any questions. 

What is the HPS/MAG Seed Exchange?

Since the fall and winter of 1993-94, the Seed Exchange has been one of the activities that makes HPS/MAG stand out from all of the other plant societies in the Mid-Atlantic region. Each year, as the fruiting season for a plant comes to an end, dedicated Society members collect the seeds and forward them, along with a description of the plant, to the Seed Exchange Team. The information is then used to create the Seed Exchange Catalog. This year's annual edition (2017-2018) of the Catalog includes 933 seed donations generously contributed by 58 gardeners, from beginners to professionals. And also this year we have over 100 new seed varieties never before offered in our catalog!

In early January, Society members can order seeds for a small fee. Later in January and February, dozens of volunteers meet at The Henry Foundation for Botanical Research in Gladwyne, PA to sort and divide seed into packets to satisfy the orders. Thousands of work hours and volumes of gardening knowledge go into providing this valuable exchange of seeds.

Any member can submit seeds or volunteer to clean and sort seeds. Not a member? Click here for the membership form.

Want to join the fun? To volunteer for any Seed Exchange Workshop, contact Polly Garnett at

To learn more about the Exchange, read "A Seed of an Idea and How it Grew" from a past HPS Newsletter.  Or visit the Avant Gardens Blog, GardenForeplay, for a 2014 posting titled "Collecting Seed for Seed Exchanges."

Schedule for the 2017-2018 Seed Exchange

January 9
Mail or deliver donations. Seed related to previously submitted donor forms may be submitted by mail or delivered by January 9 to Loretta DeMarco, 603 Walnut Ln, Philadelphia, PA 19128.

January 16

Seed Exchange Order Form Deadline:  Members can submit and pay for their orders online at or via US mail. Orders are filled on a first-received basis with requests from donors and volunteers being honored first. Orders and payments made online must be posted by January 16, 2018. Paper forms and checks must be postmarked by January 16, 2018. Orders received post deadline will be filled as the supply of seed permits. The cost of an on time order is $20.00. 

January 23 
Orders posted or postmarked after January 16 must include a payment for $25.00 to include a late order surcharge of $5.00. Orders posted or postmarked after January 23 will not be filled; the payment will be returned.

2017-2018 Seed Exchange Workshops
Join us for cleaning and packaging workshops at the Henry Foundation for Botanical Research, 801 Stony Lane in Gladwyne, PA, held from 10:00am to 2:30pm on Tuesdays, Wednesdays and Thursdays starting Wednesday, January 31, and continuing into February. To schedule your workshop volunteer services, please contact our friendly volunteer coordinator, Polly Garnett, at or 610-695-9135.

In addition to learning at least one new thing about seeds and propagation, you can renew old friendships, hear the latest news, describe the progress in your own garden, and review the great gardens that you had the opportunity to visit in the past year. Bring a lunch for yourself and maybe a snack to share. Coffee, tea and water are provided. 

2017-2018 HPS/MAG Seed Exchange Snow Cancellation Notification

Since the Seed Exchange workshops typically coincide with some of the worst winter weather of the year, we will notify volunteers of the day's plans with an announcement on the home page of the HPS/MAG web site,, available by 8:00 am each workshop day on which weather is a factor. For those without access to a computer, call 215-356-7377 for up-to-date information.

Seed Propagation Workshops

Jan 12 Seed Propagation Workshop, Seeds of Unusual Plants and Winter Sowing: Alice Doering and Helen Standen demonstrate at Jenkins Arboretum, 9:30–12:00.   Registration is closed, workshop is full.

Jan 30 - Seed Propagation Workshop, Seeds of Unusual Plants and Winter Sowing: Loretta DeMarco demonstrates at The Henry Foundation, 10:30–12:30. Open to members only for a $5 fee.  To register for this workshop, click here.  Open to HPS members only.  Limit to 15 people.

Seed Volunteers, photo courtesy of Rob Cardillo