Past Events

Instructor: Candice Leyland Fee: $25 (plus HST) per person. Join Artist Candice Leyland for an online watercolour class exploring spring ephemeral flowers inspired by Ontario and the Guelph, Arboretum.  We will look at a variety of techniques to capture these delicate ephemeral blooms and work through a painting of snow drops. Reference photos will be provided in advance. Some watercolour experience is recommended, but this workshop can be beneficial for all levels. 

Instructor: Christa Wise Fee:  $98 (plus HST) per person if you register by the early bird deadline of April 26, 2025. After April 26 the fee is $108 plus HST.

Instructor: Joseph Langlois Dates: Thursday OR Friday, April 3 OR 4, 2025 Time: 7:30 to 8:30 PM Fee: $12 (plus HST) per person

Instructor: Robert Pavlis Fee: $10 (plus HST) per person Vermicomposting is a way of using earth worms to compost organic material. One benefit of this method is that it can be done in the home using special bins that require a very small space.

Instructor: Robert Pavlis Fee: $10 (plus HST) per person The previous workshop provided information about the composting process. This workshop is more hands on and looks at various methods for completing both hot and cold composting. Hot composting is the traditional method using one or more bins. This is a great system that makes faster compost, but it is impractical for smaller gardens. Various plastic bins and drums are more suitable there. We’ll have a look at various commercial and DIY systems.

Instructor: Polly Samland Fee: $65 (plus HST) per person if booked before the early bird deadline of Monday, March 10, 2025. After the early bird deadline the fee is $75 (plus HST)

Instructor: Chris Earley, Arboretum Interpretive Biologist Mondays and Wednesdays, March 17, 19, 24, 26, 31, April 2, 7 and 9, 2025 Fee: $70.00 + H.S.T.

Instructor: Matt Soltys Fee: $65 (plus HST) per person if booked before the early bird deadline of Tuesday, March 4, 2025. After the early bird deadline the fee is $75 (plus HST)

Instructor: Robert Pavlis Fee: $10 (plus HST) per person. An introduction to the composting process including the role of microbes, greens and browns, carbon to nitrogen ratios, moisture levels, the importance of temperature and a definition for finished compost. We’ll take a brief look at the pros and cons of various composting methods so that you can select the right workshop for you, in the following weeks.

Instructor: Sean Fox Fee: $10 (plus HST) per person. Please join us for a concentrated and in-depth look at Ontario’s incredible diversity of Oaks (Quercus spp.). Sean will share some practical tips about how to accurately identify oak species and hybrids, as well as outline the huge ecological role this group of plants plays in our region.