Garden Expert: Come One, Come All
Create biodiversity in your yard to ensure a growing population of pollinators
“Nature does not hurry, yet everything is accomplished.” ~LAO TZU
I made several insect hotels in my wood working shop for some of my gardening friends. They were received graciously but, at the same time, with a common query: “What IS it? What does an insect hotel do? What kind of insects will it attract? Are they all good for my garden?”
An insect hotel encourages insects to visit and reside in your yard. It can be as simple or as complex as you choose. There are many designs for insect hotels, and if you are a creative type, you can create your own.
Clearly, this discussion has a long way to go. It started with concern about the decline in the honeybee population, and has extended to the general concern shared by naturalists everywhere about the problems with our native population of pollinators.
We are no longer concerned exclusively with the decline of honeybees. Truth is, there are over 700 species of native bees (honeybees are not native) that serve as primary pollinators ‘out there’ in the natural environment, many of which you can attract to your yard with an insect hotel. In addition, there are thousands of other invertebrates that either pollinate over 30 per cent of the plants that we rely on for food, or are essential members of the web of insects that make up the whole show.
Take a winter moment to digest the following and you will be on your way to understanding the whole, big picture.
1. UNDERSTAND THE MEANING OF BIODIVERSITY. The word comes from ‘biological diversity.’ WWF defines it as, “The term given to the variety of life on Earth. It is the variety within and between all species of plants, animals and micro-organisms and the ecosystems within which they live and interact.” Biodiversity in your yard is represented by the range of naturally occurring plant, animal and insect life that exists in it. There is much that you can do to increase biodiversity, or the range of life in your yard.
2. PLANTS–PACK THEM IN. Do not underestimate the impact that you can have on the beneficial insect life in your neighbourhood by planting flowering plants. The longer each plant produces a flower, and the more of them, the better. If you have a minimum of six hours of sunshine in your garden, you are in luck. The varieties of plants available to you are nearly limitless. If you are dealing with shade, you also have opportunities to plant flowering plants galore, but you will need to be more thoughtful about your plan. In either case, place your plants densely to attract the maximum number of pollinators.
3. GO NATIVE…OR NOT. A recent study in England indicated that it is not important to a bug that a plant is native, if it produces a blossom that attracts them in the first place. According to the results of “The Plants for Bugs Pollinator” research, it is the diversity of plant material that attracts the maximum range of bug species, not whether they are native. To quote the study, “The value of a site can be maximized for pollinators by choosing plants from different regions of the world.”
4. ADD WATER AND DON’T STIR. Adding a still-water element is the single most impactful feature that you can add to your garden or balcony for attracting pollinators. A pond in the yard or a half-barrel on the balcony works just fine. When you add a water feature, I can guarantee that you will discover wildlife in your yard that you have never seen before. As dragonflies, salamanders, frogs, toads, water beetles, amphibians, mammals and bugs discover your new drinking hole, they will grow, thrive and breed.
We are only beginning this discussion about the importance of creating biodiversity in our yards and gardens. As I look in to the crystal ball, I see the interest in attracting pollinators and creating biodiversity in Canadian gardens as growing steadily.
DIY INSECT HOTEL: Use natural materials and arrange them in such a manner that insects find attractive and move in. NB. They don’t like a sanitized environment. Instead insects like messy and thrive on clods of rotting leaves, rough-cut lumber, or better still, a stack of rotting, split firewood.
Mark Cullen is an expert gardener, member of the Order of Canada, author and broadcaster. Get his free monthly newsletter at markcullen.com. Look for his new best seller, The New Canadian Garden published by Dundurn Press. Follow him on Twitter @MarkCullen4 and Facebook. markcullen.com