04/01/2024
Here's some wise advice from the Xerces Society for Invertebrate Conservation about when (not) to start spring garden clean-up. (Edited for length)
How to determine when spring cleaning won't bug your pollinators
By Justin Wheeler
Resist the temptation of spring fever! Each spring we beg gardeners and homeowners to press pause and find other ways to occupy their weekends. Here are some benchmarks to know when it's safe to start spring clean-up in your yard.
1. Have I put away the snow shovel, mittens, and winter coats?
If you havenβt tempted fate yet by relegating the snow shovel to the back of the garage, and if youβre still wearing wool socks and long underwear β itβs too early.
2. Would I plant tomatoes now?
Any gardener will tell you itβs not a good idea to plant your tomatoes outdoors until evening temperatures are reliably in the 50s. If itβs time to plant tomatoes in your area, chances are conditions are right for pollinators to be out and about.
3. Is the lawn growing tall?
Cool-season lawns begin growing when soil temperatures reach 50 degrees. In all but the warmest climates, if grass is growing enough to justify regular mowing, itβs probably a safe bet that most pollinators have emerged.
4. Have I paid my taxes?
In northern states mid-late April should be the earliest you consider cutting back perennials and clearing garden debris. Keep in mind that some bees donβt emerge until late May.
5. Are apples and pears finished blooming?
Apricot, peach, plum, and cherry trees are the earliest to bloom, usually between mid-April and mid-May, coinciding with the emergence of many ground-nesting bees. If you can wait until apple trees are no longer in bloom, then you will protect a strong majority of native bees from losing overwintering resources.
*Timing is generalized for the eastern U.S. and will vary according to your latitude and microclimate.
Photo: Leaves of sundial lupine (Lupinus perennis ssp. perennis), a host plant for many butterfly species, including the endangered Karner blue; Liza Green Β© Native Plant Trust