Thursday, September 30, 2010


Presented by Ewan MacKenzie, Exemplar Horticulture
September 28th, 2010
Powell River Garden Club Meeting

A crowd of approximately 90 Powell River Garden Club members thoroughly enjoyed Ewan MacKenzie's presentation of Waterwise Gardening for Powell River Garden Club on September 28th.  Ewan has kindly given permission for us to publish his presentation (see below) on our blog.  

Waterwise Gardening for Powell River Garden Club

Between climate change and watering restrictions waterwise gardening is becoming more popular.  Waterwise gardening is making informed decisions on water usage based on climate, seasonal watering restrictions and/or water availability, and personal environmental watering goals. 

The first step of waterwise gardening is to set a personal water usage goal.  Then review your garden for exposure to sun and shade as well as wind, and natural soil moisture levels.  Once you have done that you can work with the given zones and plant accordingly.  You can change the landscape to retain moisture, plant shade trees, hedges and windbreaks to reduce water loss.  Review the soil structure, which may vary in different parts of your garden, then amend it based on its requirements.  It may need to be amended with organic matter to help retain moisture.  Deep cultivation promotes deep rooting. 

Traditional lawns are very thirsty and require high maintenance, so carefully consider the percent of your garden you want to assign to lawn.  Alternatively, go with a more drought tolerant seed mix.  A healthy well-maintained lawn is more drought tolerant.  Irrigate lawns wisely, less frequently, but deeply, twice a week should be enough.  An alternative is not to water it and let your lawn turn a golden brown in the summer - it's not dead, it's dormant and will green up surprisingly quickly when you get some rain.

If you are going to irrigate be wise about it and go with low volume drip irrigation.  Regular sprinklers are only 65% effective, as 35% is lost to evaporation or run off.  Low volume drip irrigation is 95% effective due to water being delivered directly to where it's required.  Use of irrigation timers or computers can be handy where you have watering restrictions that happen at inconvenient times, like early in the morning or late in the evening, also solves the problem of getting someone to water for you when you are on vacation.  Also, it is recommended to have an irrigation timer that has an incorporated rain sensor.  Water butts or barrels can be placed on downspouts to collect water during rainy spells.

Your planting plan should first consider big trees and shrubs which can offer shade and act as a windbreak.  Then you should group plants with similar watering requirements into specific zones.  This can either be done using your natural water zones in your garden, or you can create your own water needs groupings.  Within those groupings consider complimentary plant groupings, for colour and contrast. 

Drought tolerant plants do need watering until they are established.  For vest results, plant in spring or fall when there is enough natural moisture and temperatures are not too extreme.  Keep all plants adequately watered until well established.  Depending on the plant this may take anywhere from several months to several years. 

Once planting is done it is a good time to lay down low volume drip irrigation, which can now be covered in mulch.  Mulch is a very important part of waterwise gardening as it reduces water evaporation from the soil surface and also suppresses water thirsty weeds.  A 3-inch layer of mulch is ideal and if it is an organic mulch that decomposes it should be topped up each year with an inch of fresh mulch.  Inorganic mulches can look good but be aware that they usually absorb a lot of heat and are not as effective at reducing moisture loss as organic mulches.  please be careful to avoid choking newly planted plants with mulch.  Mulch should be tapered down towards the crown of the plant.

Useful websites:

Recommended Books:
Waterwise Gardening, Cook, Ian
Burpee Waterwise Garden, Springer, Lauren
High and Dry, Nold, Robert

Ewan's goal was to make us water wise...did he succeed?  I know I went away wiser!!! 

Submitted Karen Munro

Sunday, September 19, 2010

Powell River Garden Club Calendar 2010-2011

Covering Your Assets

Don't worry...'covering your assets' is not about financial planning! 

Soil, your garden's most valuable asset, deserves your attention all year long, but particularly at this time of year.  By using cover crops you can build your soil's texture, fertility, and beneficial microbe populations as well as provide protection from weeds.  Ralph Waldo Emerson's definition of weed:  "A plant whose virtues have not yet been discovered."

Hairy Vetch and Winter Rye are an awesome couple!

Rye creates a dense groundcover quickly, crowds out weeds and provides winter groundcover while the vetch begins to fix nitrogen.

Rye's dense, fibrous root mass anchors the soil preventing erosion while vetch's taproot houses soil bacteria that are able to convert nitrogen gas from the air into nitrogen that is available to plants, scavenges nutrients from deep in the soil, and carves passages in the soil for drainage.

Rye complements vetch's high nitrogen content with carbon-rich material that will add organic matter when turned under.

Rye is allelopathic, meaning it inhibits the germination of other seeds, reducing weeds.

Oats, tolerant of wet, heavy and poorly drained soils, are planted in late summer or early fall.  The oats mature before Jack Frost makes his mark on our gardens.  They die back, leaving beautifully thick straw mulch by spring.  In the spring, you can plant your crop amongst the oat straw or you can dig the residue under, wait a few weeks, and then plant your crop. 

*picture source:  google images

Tuesday, September 7, 2010


"Continuity gives us roots; change gives us branches, letting us stretch and grow and reach new heights" quote by Pauline R. Kezer

Like a perennial plant, the Powell River Garden Club has outgrown its current location at Trinity Hall.  Although Trinity Hall has been a wonderfully nurturing place of growth, it is time to transplant the Club to a larger location so it can spread its roots. 

Introducing the new meeting location of the Powell River Garden Club for the 2010/2011 gardening year...The Powell River Seniors' Centre! 

The Seniors' Centre is located at the corner of Cranberry Street and Manson Avenue.  There is plenty of well-lit parking, seating capacity of up to 130 people, and lots of well-lit space inside, perfect for mingling and allowing for different room arrangements.  Just the kind of place a Garden Club can sink its roots into!

Please join us for our inaugural meeting at the Powell River Seniors' Centre on Tuesday, September 28th, 2010, doors open at 7:00 pm, meeting commences at 7:30 pm.  Mr. Ewan MacKenzie will be our guest speaker, informing us on being 'Water-Wise.'