Keep an eye peeled in lawns and planting beds for sapling trees. Often these trees, like this walnut sapling, sprout thanks to the diligent digging of squirrels. It’s especially easy to miss these beneath mature shrubs or roses, until you spot the leaves poking through the plant. The other place that seedling trees pop up are along fencelines, courtesy of birds who have been gobbling fruit, such as mulberry, cherry or holly. Small trees are easy to hand-pull. Grab a spade if they seem firmly anchored in soil. Keep an eye out for seedlings in spring when weeding or mulching. Remove any you see before they have a chance to develop a tap root.