Regular updates on activities at the Florida Natural Areas Inventory.
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Upland Pine, Blackwater River State Forest. Photo by Gary Knight
Friday, January 22, 2016
Frost Flowers
Photo by Amy Jenkins
Frost
flowers (also known as ice flowers, ice blossoms, and frost castles) are
delicate ribbons of ice that can form when the air temperatures are freezing
but the ground remains unfrozen. Longitudinal
cracks form along the stems of some plant species because of freezing sap. Water from the ground is then drawn out
through the cracks in the stem and freezes upon contact with the air. These beautifully intricate ice structures
swirl and curl into flower-like structures as the water oozes out through the
cracks and freezes. FNAI scientists
observed these frost flowers along the edge of a marsh a few days ago on a cold
morning at Flint Rock Wildlife Management Area in Wakulla and Jefferson
Counties. Be on the watch for them on
cold mornings!!
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