The NANPS Seed Exchange is open to all members across the continent and relies on your participation. If you are not yet a member, you may join online now or include your membership form with your seed request.
The NANPS seed exchange started in 1988 and has been running continuously ever since. There are over 10,000 species of vascular plants native to temperate North America. Our seed exchange offers you the chance to increase the population of a few of these. Please help North American flora to flourish by growing locally native plants in your own garden and offering some of their seed to our Exchange.
Seeds are most often contributed from NANPS members’ gardens but donations of seed ethically collected (less than 10% from a healthy population of relatively common species; otherwise do not collect!) from wild sources is also welcome. Once seed is sent to us we endeavour to store it appropriately (e.g. moist medium for hydrophilic seed, refrigeration at the appropriate time). We are only able to do this after the seed is mailed to us.
If you are donating seeds, please remember to:
Genetic provenance is an important consideration when selecting seeds from the Seed Exchange and whatever information you are able to provide about the origin of your seed is appreciated.
The purpose of the exchange is to make native plant seed of known provenance available to members at nominal cost. It is not our intention to generate revenue from the seed exchange, but simply to cover the costs of packaging and mailing. In order to export seed to the United States, we are required to obtain a phytosanitary certificate, which adds an additional cost for our American members. We cannot ship seeds of shrubs, trees, vines and some proscribed grass species to the U.S.
We recommend that members order seed that originates from their bioregion (the general rule of thumb is within a 200-kilometre range, or 125 miles). The same species grown at different locations will be listed separately, so that members can select the seed source closest to where they live.
The list of available seed is mailed to members with theedition of our quarterly newsletter. the Blazing Star. Members are asked to send us their seed requests from theedition by the second week of January for mailing by the end of the month. Seed requests for the second round, which will be online, are due before March 31st for response by mid April. The seed exchange resumes again in the fall.
Donated native plant seed with provenance noted should be sent to:
Inquiries about how the seed exchange works, or how to unlock the dormancy mechanism for seed offered, can be made to: email@example.com
Updated Feb. 2, 2017
The following native species are available to members through the NANPS Seed Exchange. Members can order seeds without having donated to the Seed Exchange. See ordering instructions and key to donors following this list.
NANPS tries its best to list seeds as received. NANPS also uses discretion when receiving seeds of threatened species.
Please note that while all seeds donated are native to North America, they may not be local to the donor. Use your own discretion when ordering seeds and choose local stock if available.
Germination requirements are here.
|W||Seeds are wild collected|
|~||Older familiar Latin name used|
Grasses and Sedges
|Big bluestem||Hen||Greater Toronto Area|
|Bottlebrush grass||Den||Greater Toronto Area|
|switchgrass, panic grass||Van||Halton|
|little bluestem||Den||Greater Toronto Area|
|Indian grass||Hen||Greater Toronto Area|
|wild sarsaparilla||Hod||Greater Toronto Area|
|box elder/Manitoba maple||Hod||Greater Toronto Area|
|white snakeroot||Den||Greater Toronto Area|
|pearly everlasting||Hen||Greater Toronto Area|
|wild columbine||Ima||Soyer's Lake, Haliburton|
|spikenard||Den||Greater Toronto Area|
|common milkweed||Can||Greater Toronto Area|
|butterfly milkweed||Hen||Greater Toronto Area|
|smooth aster||Mea||Greater Toronto Area|
|New England aster||Mea||Greater Toronto Area|
|poppy mallow||Mea||Greater Toronto Area|
|trumpet vine||Hod||Greater Toronto Area|
|northern catalpa||Hod||Greater Toronto Area|
|American bittersweet||Hod||Greater Toronto Area|
|eastern redbud||Hod||Greater Toronto Area|
|virgin's bower||Hod||Greater Toronto Area|
|showy tick- trefoil||Den||Greater Toronto Area|
|flat-topped aster||Hen||Greater Toronto Area|
|flat-topped aster||Van||source- Acorus nursery, ON|
|rattlesnake master||Van||source- Acorus nursery, ON|
|tall boneset||Brant ON|
|boneset||Bel||Greater Toronto Area|
|white wood aster||Bri||Guelph|
|white wood aster||Den||Greater Toronto Area|
|large-leaved aster||Hen||Greater Toronto Area|
|spotted Joe Pye weed||McK||Caledon|
|sweet Joe Pye weed||McK||Caledon|
|sweet Joe Pye weed||Bri||Guelph|
|honey locust||Hod||Greater Toronto Area|
|Kentucky coffee tree||Hod||Greater Toronto Area|
|Kentucky coffee tree||Zed||Campbellcroft ON|
|sneezeweed||Kon/Mea||Greater Toronto Area|
|rose mallow||Van||source- Acorus nursery, ON|
|giant St. John's-wort||Van||Cambridge|
|Kalm's St. John's-wort||Hen||Greater Toronto Area|
|wild potato vine||Hod||Greater Toronto Area|
|wand-like bush clover||Van||souce- Acorus nursery, ON|
|rough blazing star||McK||Caledon|
|meadow blazing star||Mea||Greater Toronto Area|
|dense blazing star||Hen/Mea||Greater Toronto Area|
|dense blazing star||Pat||Mississauga|
|cardinal flower||Hen||Greater Toronto Area|
|blue lupine||Bri||Norfolk County & Guelph|
|false/star-flowered Solomon's seal||McK||Caledon|
|Bee Balm||Bel||Greater Toronto Area|
|evening primrose||Hod/Den||Greater Toronto Area|
|prickly pear||Den||Greater Toronto Area|
|foxglove beardtongue||Den/Hen||Greater Toronto Area|
|American sycamore||Hod||Greater Toronto Area|
|hairy mountain mint||McK||Caledon|
|slender mountain mint||Van||Cambridge|
|Virginia mountain mint||Van||source- Acorus nursery, ON|
|gray headed coneflower||Har||Elmvale|
|gray headed coneflower||Hen||Greater Toronto Area|
|green-headed coneflower||Hen||Greater Toronto Area|
|brown eyed Susan||Hen||Greater Toronto Area|
|white goldenrod||Sha||Greater Toronto Area|
|blue-stemmed goldenrod||Sha||Greater Toronto Area|
|zigzag goldenrod||Hen/Den||Greater Toronto Area|
|gray goldenrod||Hen||Greater Toronto Area|
|Riddell's goldenrod||Van||source- Acorus nursery, ON|
|stiff goldenrod||Hen/Sha||Greater Toronto Area|
Solidago rigida (Oligoneuron rigidum)
|stiff goldenrod||Van||source- Acorus nursery, ON|
|heart-leaved aster||Den||Greater Toronto Area|
|heath aster||Den||Greater Toronto Area|
|smooth aster||Hen||Greater Toronto Area|
|New England aster||Van||Burlington|
|New England aster||Bel||Woodbridge|
|New England aster||Den/Hen||Greater Toronto Area|
|sky blue aster||Hen||Greater Toronto Area|
Symphyotrichum puniceum (sold out)
|tall meadow rue||Hen||Greater Toronto Area|
|blue vervain||Can||Greater Toronto Area|
|ironweed||Sha||Greater Toronto Area|
|ironweed||Den/Hen||Greater Toronto Area|
|ironweed||Bel||Greater Toronto Area|
|ironweed||Kon||Greater Toronto Area|
|Culver's root||Hen/Den||Greater Toronto Area|
Our donors are our heroes!
The following donors contributed to the 2016-17 SEEDEX:
Atk – Eileen Atkinson
Bel – Martha Bell
Bri- Judy Brisson
Can – Alexandrina Canto Thaler
Den – Vivienne Denton
Har- Kate Harries
Hen – Miriam Henriques
Hod – Jim Hodgins
Ima – Stan Imada
Kon – Alice Kong
McK – Darcie McKelvey
Mea – Howard Meadd
Pat – B Patterson
Sha – Stacey Shannon
Van- Brenda van Ryswyk
Zed – Jane Zednick
Please include the following information with your request for seeds: your name and mailing address, the species you’d like (by botanical name) and any substitutions you would like in case we cannot supply your first choice. If you prefer seed from a specific listed location please so indicate and we’ll try to comply.
If you are donating seed, please remember to provide botanical and common name and source information if known.
Seed donors may request up to 30 packets; other members may order a maximum of 15 packets. If you are a Canadian requester include $2 for the first packet and 50 cents for each additional packet. If you are requesting acorns/nuts of tree species please add an extra $2 to cover the cost of mailing. If you are an American requester please send $20 to cover the cost of a phytosanitary certificate and 50 cents for each packet of seeds (in U.S. funds). Tree and shrub seeds cannot be sent to the U.S.
Cheque or money order only – please do not send cash in the mail.
Send your request to:
Inquiries can be made by email at firstname.lastname@example.org.