We'll be at Get the Jump on Spring on Feb. 23.  Drop by for advice, seeds and memberships. Read more.

In progress until Dec 31. To participate, read on.

Feb. 9, 1- 4 pm. Hands on workshop. Free for members. Non-members welcome if there is space info [at] onrockgarden [dot] com (Contact us)

Learn from the best! At TBG Jan 13. Admission free. Non-members welcome. Details

What is the difference between Oxlips and  Cowslips? Read on

Speaking Feb 17 at TBG. Free admission. Non-members welcome. Details


Feb. 9 1-4 p.m.

Join a small group of enthusiasts while going over the basic process of seed sowing – hands on! If you have seeds you want to start, bring them. If you don’t have seeds, don’t worry. We have lots! The equipment and materials you need will be provided. No charge for members! Bring a friend! If you have a laptop, tablet or smart phone, bring it along. We’ll explore ORG&HPS' famous germination guide. Non-members will be welcome to participate if there is space. A fee will be charged to cover the cost of supplies used by non-members.

info [at] onrockgarden [dot] com (subject: seed%20sowing%20workshop) (Contact us) to register or obtain more information.

What's New!

  • Posted on December 14, 2018

    photo: Fine Gardening Magazine

    Members, Linda and Chen Choo, have a real gem of a garden in Milton, Ontario. Read excerpts from the article in Fine Gardening and review the plant identifications provided with the article.

  • Posted on December 10, 2018
    Thank you to all who contributed to the December Silent Auction. The donations and the bidding made it a great success. There were great opportunities to purchase some wonderful Holiday gifts - real bargains. So attend next time, when we do it again. Perhaps March?
  • Posted on November 29, 2018

    ORG&HPS members are invited to a regional spring gala of Great Lakes Chapter of NARGS,  May 17-19 2019. Informal get-together on Fri evening. Vojtech Holubec is speaking on Sat about rock garden plants for Michigan's climate (dinner included). On Sat and Sun, there will be at least 7 open gardens and the chapter's spring plant sale. Esther Benedict (Indiana) will be selling rock plants; Andy Duvall will have his nursery-garden open. Some rooms have been set aside at $99 a night at Weber's Inn in Ann Arbor. Our hosts need to ensure their hotel arrangements will accommodate everyone, so please chair [at] onrockgarden [dot] com (contact Arie) ASAP if you are thinking of attending. He will also share more details once they are confirmed.

  • Posted on November 21, 2018

    What better gift for a gardener or seedaholic? Gabriela Costea now sells gift cards in denominations of $15, $20 and $25. Details. 

  • Posted on November 21, 2018

    This rock garden was built in the 1920s by the Superintendent for Calgary Parks, William Roland Reader. In 2006 it was restored using the original plans and plant lists and is now a National Historic Site. We are pleased to have Daniel Walker, its head gardener, as one of our members. Details about the garden and its plants.

Upcoming Speakers

Cultivation and propagation of the genus Saxifraga (porphyrion, saxifragae and lingulatae)

Ger van den Beuken

Ger runs a small nursery, specializing rare alpines in the Netherlands. His interest in alpines started about 35 years ago, during his first treks in the mountains. He particularly focused on the high alpine vegetation such as Saxifraga, Androsace,...

Plants from Wild to Cultivation:How Edinburgh Botanic Features and Grows New Plants

John Mitchell

AfterJohn obtained his Horticultural qualification he worked at St Andrews Botanic Garden, Inverewe. For the last 30 years John has worked at Edinburgh Botanic Garden, the last 19 as Supervisor. His main duties are managing the Alpine Department...

Plant of the Month for December, 2018

 (PRIM-yew-luh VER-iss)

General Information:

Primula veris is best known as the common cowslip. With a name like that you would think everyone grew it, but it's not common in gardens or nurseries which is really odd since this is a very easy to grow primula that sparkles every spring.

Primula veris : photo by Robert Pavlis

Primula veris, good sized clump ready for division: photo by Robert Pavlis

The cowslip starts to grow very early in spring and flowers mid to late spring. If it gets enough water it will stay...