A question I often get asked as a David Suzuki Butterflyway Ranger is, “When can I rake my leaves?”
The honest answer may not be what you want to hear. For butterflies, moths, and countless other small creatures, there is never a “good” time to clear away leaf litter. What looks like a simple layer of fallen leaves is, in fact, a living habitat. Some of our earliest spring visitors depend on it for survival.
The mourning cloak butterfly, for example, spends the winter tucked safely beneath those leaves as a butterfly, emerging with the first warm days. Other species have equally remarkable life cycles. The luna moth – famous for its pale green wings – feeds on hardwood tree leaves as a caterpillar, then drops to the ground to pupate in the leaf litter, where it may remain for weeks or even months. The banded woolly bear, a familiar fuzzy caterpillar, winters among fallen leaves as a caterpillar before pupating in spring. Each species follows its own timeline. There is no single season when leaf removal is harmless to all. Nature does not operate on a tidy schedule, and life continues to unfold in these spaces year-round.
Beyond sheltering insects, leaf litter plays a crucial role in soil health. As leaves break down, they nourish the microorganisms that sustain our ecosystems from the ground up. By removing them, we’re not just tidying our yards – we’re interrupting a vital cycle of renewal.
Ecologist Robin Wall Kimmerer writes in Braiding Sweetgrass, “All thriving is mutual.” It’s a reminder that our well-being is tied to the health of the natural world around us. Leaving the leaves, even in part, is a simple act that supports pollinators, enriches the soil, and honours the interconnectedness of life.
So, this year, consider a different approach. Let leaves lie where they fall. Don’t bag them, don’t mow them, embrace a little untidiness. In that quiet layer beneath our feet, life is waiting—resting, growing, and preparing to emerge.
Lesle-Ann Hine