“Green” Gardening Tips
Contributed by Jolene Ottosen for the Chaparral Green Thumbs
Keeping your garden green isn’t just about the colour. While gardening is often seen as the ultimate environmentally friendly activity, the way we garden can sometimes be less green than we think.
One of the most talked-about topics in gardening today is the use of chemicals. I won’t take sides in the organic vs. chemical debate—it’s not as black and white as some would suggest. Each gardener needs to weigh the costs and benefits and decide what they’re comfortable with.
A particularly contentious issue is the use of pesticides. While some bugs can be harmful to our plants, others are beneficial, and pesticides don’t distinguish between them. Instead of reaching for chemical sprays at the first sign of infestation, try a more natural approach. For example, ants dislike water, so keeping your garden well-watered can help keep them away. My father recommends diatomaceous earth for slugs and other pests, but I’m not a fan—it also harms earthworms, which are your soil’s best friend. Instead, I’ve started planting slug-attracting crops like potatoes in containers. Many gardeners also suggest using copper barriers.
Mild aphid infestations can often be managed with a blast of water or a mix of mild detergent and water. If aphids persist, consider introducing beneficial insects. Many garden centres stock them, or you can have them shipped. Just be sure to research whether the insects are suitable for your area and not invasive.
We all want a lush, green lawn—but the key to achieving that lies in what we feed it. Commercial fertilizers work quickly, but synthetic nitrogen provides only a short-term fix and can create long-term dependency. Think of it like sugar: quick energy, but no staying power. Natural sources of nitrogen, like compost, kelp, or manure, act like complex carbs—slow-releasing, they promote deeper root growth and healthier soil. These can be applied as a top dressing or in the form of compost tea.
Be cautious with manure. If the animal consumed herbicides, the chemicals can pass into the manure and harm your plants—I learned this the hard way. Only use manure from a trusted source or consider avoiding it altogether. Grass clippings are another great natural fertilizer, especially when mulched while mowing.
Water is increasingly precious, so smart watering is key. The City of Calgary recommends giving lawns about one inch of water per week. Place something like a Frisbee on the lawn to measure. Water early in the morning to reduce evaporation, and water less often but for longer periods to encourage deeper root growth. Keep grass no shorter than three inches to help shade the roots and retain moisture.
For gardens, hand-watering with a hose or watering can is the most efficient. Again, longer, less frequent watering is best. Mulching the soil surface helps prevent moisture loss, and adding organic matter improves water retention. While some use peat moss for this, it’s controversial – harvesting it releases stored carbon from peat bogs. Compost or coir (coconut fibre) are more environmentally friendly alternatives.
Rain barrels are a great investment for water conservation. The City sells basic models for about $80 to $90, and you can connect several together. Garden supply centres also offer more decorative options. If you buy a barrel with a faucet, be sure to get a stand so it’s elevated and easier to access. The higher the barrel, the more water pressure you’ll have—especially important if using a hose. Note: rainwater collected from rooftops is not recommended for edible plants unless a first flush system is installed to improve water quality.
Another smart strategy is to plant native species. Our prairie climate is hot and dry, but native plants are adapted to thrive with what nature provides. Several nurseries in Calgary specialize in native species and can help you choose what’s best for your garden.
Lastly, to enjoy your green space even more, consider installing solar lights so you can appreciate your yard at any time of day—or night.
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