07/10/2024
If it’s your first time in the Okanagan, you’re probably wondering why you decided to move to or perhaps just take a tour on the surface of the sun!
Welcome! Can you believe people pay more to live here? We call it “sunshine tax,” but I digress.
What I really wanted to talk about can be controversial but it’s time we had a conversation - grass vs rock bed - that is the question.
The number one reason people choose to remove their lawn and replace it with rock mulch is because it saves on water usage. The second reason is because it’s less maintenance. I’ll come back to that one but does the water usage.
There is no doubt that a lawn requires water and the rock bed requires none. Let’s face it. We need water to live and water costs money so it’s an easy decision for most. But there are other factors to consider and the water thing is not as simple as it may seem… on the surface. Yes, I’m a dad. 😂
I like to make my choices by considering all the factors and weighing them out. First a little lesson on air temps and how they affect precipitation.
Hot air holds more moisture. Once you understand this, the rest makes sense. We live in a deep wide mountain valley so the air pressure is higher. Higher pressure means higher temps. It also means less rain because the air will absorb more water than it releases. The keen ones who made it this far may already see where this is going.
So how do we reduce the air temps so our aquifers can get more rain water - reducing the need for restrictions and the need to water with irrigation systems? Simple, don’t replace your lawn with rock mulch!
Did you know that a rock mulch area increases the surface temperatures by nearly double. On a 35 degree day the rock mulch air near the surface will be 65 degrees! Compare that to an irrigated lawn - 37 degrees. 45 if it’s not irrigated.
Either way, it’s much less. Now take a quick look at your map app on your phone and set it to satellite view. How much of what you are looking at is rooftops, asphalt, rock, and the like compared to anything green? Cities like Vernon and Kelowna can increase air temp by 5-10 degrees in the local area because of the low proportion of green spaces compared to other types of ground cover.
Now what about water quality. Having water is no good if it’s contaminated. A lawn will capture runoff and filter it while the rock bed will shed rainwater onto the oily asphalt and end up in our waterways.
And I said I would come back to the maintenance. Anyone who has had a rock bed for more than a year will know that rocks don’t prevent w**ds. Weeds will grow in the cracks of a sidewalk. They don’t need soil. I personally just finished w**ding and sizzling in the hot sun for hours pulling w**ds in a rock bed until my fingers were numb. I would rather be able to mow solid w**ds on an unirrigated “lawn” once or twice a summer than do that again.
I could go on and on as to why you should reconsider if you’re thinking of getting rid of the lawn but I’ll leave you with a well written article instead.
Enjoy and please, Keep It Green!
While we were in Colorado there was a trend to rip out anything that was growing and replace it with a gravel landscape. Every time I saw someone ripping out their grass to do this: I wanted to thr…