Rethinking Spring Clean-Up
- Rachel Emus
- 3 hours ago
- 3 min read
If you’re planting native species, you likely already recognize the value of gardening for wildlife—providing essential food in the form of nectar, pollen, and foliage. But supporting the full life cycles of insects also requires us to think beyond planting and consider how our gardening practices create and sustain habitat.
In addition to avoiding fall clean-up, there are actions we can take (and avoid) in spring to better support native insects—including bees and butterflies—as they emerge from winter dormancy.
The longer you can wait in spring to cut back last year’s vegetation and move leaves, the better. The Xerces Society recommends asking yourself the following questions before tidying up your garden:
Is the lawn growing tall?
Would I plant tomatoes now?
Are apples and pears finished blooming?
Several sources suggest waiting until temperatures stay above 50°F for at least a week. Over time, you may learn to time your clean-up by watching for insect activity—the kind of intuitive, observant gardening we all strive for. When you begin to see insects, spring emergence is underway. Give it a few more days to be sure before beginning any clean-up.
In the NGBH garden, leaves from the previous autumn remain in place throughout the growing season, where they suppress weeds, retain moisture, and gradually break down to enrich the soil. For many native plants, these are the conditions they are adapted to. We clear paths, boardwalks, and steps, but otherwise leave the leaves where they are, knowing that plants will soon leaf out and largely conceal them. If leaves have accumulated too heavily in one area, they can be gently redistributed by hand to other parts of the garden.
In spring, we assess the stems of perennial plants that have overwintered from the previous growing season. Hollow and pithy stems are cut back to 8–24 inches to provide nesting cavities for female stem-nesting bees, which will soon be seeking places to lay eggs. If any stems have toppled or become unruly over winter, we selectively cut them back and carefully relocate the material to a habitat pile. Otherwise, upright stem stubble is left in place throughout the season.
By summer, this stubble blends naturally into the garden, continuing to provide habitat. It’s important that these older stems remain undisturbed through the following winter, as they may now be actively supporting developing bees. Over time, the stems gradually break down and disappear, completing their role in the garden’s life cycle. An 8-inch reminder of last year’s growth is a small sacrifice for the benefit of native bees and the broader ecosystem they support!
Another effective way to support wildlife is by incorporating woody debris—sticks, branches, and logs—into the garden. This organic material provides shelter, nesting sites, and food for a wide range of species, while also lending itself to sculptural, intentional design. When arranged into a “habitat pile” or “dead hedge,” it mimics natural forest processes and creates a visually compelling focal point.
To build one at home, start with larger logs to form a stable base, then layer smaller branches horizontally on top. Prune or tuck in any vertical or protruding twigs to maintain a clean, cohesive form. Even a modest habitat pile can boost biodiversity while adding texture and quiet beauty to the landscape.
For those who prefer a tidier look in their gardens but still want to support wildlife habitat, a balanced approach can work: keep the first few feet of your garden neat, and let the back remain a bit wilder, or designate certain areas as “wild zones.” With a few thoughtful choices, any garden can play a role in supporting local biodiversity.
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