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“Aquifers and Aquitards, Long Rains and Long Droughts: Quadra Island’s Water Cycle is … Complicated. Implications for Gardeners”

October 3, 2022 @ 7:00 pm - 9:00 pm

Free for members/$3 for guests


Quadra Climate: Normal and Extremes

The Sunshine Coast and Discovery Islands region exhibits extreme
seasonality of precipitation, with the least coming when it is most
needed for gardening.  Of course, there is an upside to this due to
long sunshine hours supporting plant growth during the height of the
growing season.  It appears that this seasonality will be getting
more extreme as the global climate changes.  What limitations does
this pose for gardeners? What can we do to adapt?

Aquifers and Aquitards on Quadra Island

What do we know and not know about groundwater aquifers on Quadra?
What additional information would be useful in the case of either
increased irrigation demand or more extended droughts?  The
characteristics of the Quadra aquitards are both a limitation and a
distinguishing benefit for Quadra Island as compared with other

Hydraulic characteristics of typical south Quadra topsoil and
subsoils with emphasis on seasonal water excesses and deficits.

Technical detail about the dominant topsoil types (Fine Sandy and
Silty Loam) presenting issues and opportunities for gardening.

Rainwater Capture and storage

How to make the most effective use of stored rainwater.

Greywater retention and use

Potential volumes, plumbing, storage, and use limitations.

Some techniques for water conservation

Hügelkultur beds, keyline swales, organic soil enhancements,
xeriscaping or water-wise landscaping, mulching.  An invitation will
be extended to the audience to add to this list, and describe
techniques that they have tried on Quadra.

PLUS Coffee, Desserts, Show & Tell Table, Plant & Seed Table…all
that fun stuff!

For more info contact quadraislandgardenclub@gmail.com


October 3, 2022
7:00 pm - 9:00 pm


Quadra Community Centre
Quathiaski Cove, BC V0P 1N0 Canada + Google Map