Retinal detachment is a very serious eye condition that happens when the retina separates from the tissue around it. Since the retina can't work properly under these conditions, you could permanently lose vision if the detached retina isn't repaired promptly.
Plant Hardiness. Cannas are reliably hardy as far north as Zone 7, which includes New Yorkâs Long Island, Virginia, the Delmarva peninsula, southern Tennessee, mid-state Missouri, southern Oklahoma and parts of the Texas panhandle, as well as patchy areas of the Sierra Nevadas and West Coast mountain ranges.
At a press conference this morning, the USDA announced its new hardiness zone map. Hereâs New Yorkâs looks like: Hardiness zones are based on average low winter temperature, a crucial factor â though not the only one â determining which plants will survive over winter. From the USDA news release: Compared to the 1990 version, zone boundaries in this edition of the map have shifted in many areas.