Plane trees in cities have an important cooling effect even in extreme heat, according to a new study conducted by the Swiss ...

Specifically, sap begins to flow in sugar maple trees during a very specific window: when freezing temperatures (at or below 0°C / 32°F) occur at night but warm up during the day.

Certain tree species, such as maple, birch, dogwood and elms, have an exceptionally heavy sap flow in the early spring. When pruned or wounded, these trees will “bleed” quite noticeably. Under normal ...

Spring is here — let the maple sap flow and the syrup-making begin. Public maple syrup hikes are set for March 10,11,17,18, 24 and 25 at Ryerson Woods.

Jim Grimley, of Stoney Ridge Family Farm in Caledonia, taps a maple tree for sap to turn into maple syrupSupplied Sap is boiled down to make maple syrup in the sugar shack at Stoney Ridge Family ...