It’s that time of year when eastern white pines (Pinus strobus) start dropping older needles, resulting in a new layer of sound-cancelling padding under trees. The sight of so many browning needles can be alarming though if you are not wise to the true meaning of evergreen. In general, evergreen refers to plants whose leaves (broadleaf, needle-like, scale-like or awl-like) last more than one year before falling. Deciduous plants on the other hand drop all of their leaves, leaving the plant completely devoid of leaves for part of the year.
Hard to believe it’s just four weeks out from the St Louis area’s first median frost date (~October 10), so prepping outdoor perennial container plants for over-wintering has moved higher up on my priority to-do list. Some are hardy perennials that I just planted in large containers with the intention transplanting them in the garden late summer, leaving enough time to become established before freezing temperatures arrive.