Journal, Seedex, Speakers, Sales, Workshops and more -- Join!

The plant sale will start at 12:30 noon on Sept 11 at TBG and resume after the speaker. Everyone is welcome! Read more

Members can visit some of the best gardens in southern Ontario! Tours on June 12, July 17 and August 7. Join now.

Blooming in April, species in this genus of alpines often cross-pollinate. They are bright accents and easy to grow. Details

Speaking September 11. Admission free. Non-members welcome. Details

Hear this talk by a leading alpine gardener. Free admission. Non-members welcome. Details


Our members have some of the most interesting and diverse gardens in Ontario. If you are a member, you can participate in our tours for free.

June 12: Thornhill, Gormley, Aurora, Newmarket

July 17: Burlington, Hamilton (Note: Our membership card is required for discount admission to Royal Botanical Gardens. info [at] onrockgarden [dot] com (subject: membership%20card) (Contact us) for a card if you need one.)

August 7: Kawarthas, Lindsay, Buckhorn, Young's Point

What's New!

  • Posted on May 20, 2016

    Read about spring maintenance advice from ORG&HPS member, Marjorie Harris.

  • Posted on May 13, 2016

    One of our members is selling  Nymphaea 'Rhonda Kay' for $25. They will be available for pick up in Toronto on June 18. info [at] onrockgarden [dot] com (subject: Nymphaea) (Contact us) for more information.

  • Posted on May 11, 2016

    See the detailed posting by Matt Matus, president of NARGS, on how to plant an alpine trough.

  • Posted on April 6, 2016

    Marion Jarvie, Frank Kershaw and Ursula Eley are among the presenters for various programs at Toronto Botanical Garden from May to August. Details

  • Posted on March 8, 2016


    Apios americana

    Peter Fuller has an extensive collection of native plants available at his Belleville nursery for 2016.

Upcoming Speakers

Viornas - a Special Double Presentation at 11:00 a.m. and 1:30 p.m.

Deborah Hardwick

Deborah Hardwick is an avid 'clematarian' who has spent the last 15 years studying, collecting, growing and now hybridizing clematis. Her garden contains a collection of over 1300 registered and species clematis taxon in addition to her nursery with...

Plant of the Month for May, 2016

 (Dray-buh  kor-ab-EN-sis)

General Information:

The plant pictured in this post is known in the trade as Draba korabensis - a nice yellow flowering Draba. But is this the right plant?

Draba korabensis: photo by Robert Pavlis

Draba korabensis: photo by Robert Pavlis

There is very little information available about this plant on the internet, but I did manage to find a herbarium specimen and a detailed description of the species:

  • Plant in Bulgaria:...