entire Outer Banks, and they are still successfully planted and grown. Its current most northerly known native stand is on Monkey Island in Currituck County. From Cape Hatteras National Seashore southward, the vegetation does include dwarf palmetto (Sabal minor), Yucca aloifolia and Yucca gloriosa; however, the area also has Cabbage palmetto (Sabal palmetto), which can be found in the north, although they are native in the southern part of the Outer Banks, specifically prevalent from Cape Hatteras and all points southward. Pindo palms and windmill palms are also planted widely throughout the Outer Banks; although, they are not indigenous to the area. A wide variety of native plants can be found at the Elizabethan Gardens in Manteo on Roanoke Island. The Outer Banks are home to Yaupon Holly (Ilex vomitoria), the roasted leaves of which were brewed into a high caffeine beverage called black drink by the Native Americans. The Outer Banks may be one of the few places where it is still consumed. Animal life The islands are home to herds of feral horses, sometimes called "banker ponies", which according to local legend are descended from Spanish mustangs washed ashore centuries ago in shipwrecks. Populations are found on Ocracoke Island, Shackleford Banks, Currituck Banks, and in the Rachel Carson Estuarine Sanctuary. Climate The Outer Banks has a humid subtropical climate (Cfa). The outer banks have unusual weather patterns because of their unique geographical location. As the islands jut out from the eastern seaboard into the Atlantic Gulf Stream, the Outer Banks has a predisposition to be affected by hurricanes, Nor'easters (usually in the form of rain, and rarely snow or mixed precipitation), and other ocean-driven storms. The hardiness zone is 8b. The winters are typically milder than in inland areas, averaging lows in the upper 30s and highs in the lower 50s, and are more frequently overcast than in the summer. However, the exposure of the Outer Banks makes them prone to higher winds, often causing wind chills to make the apparent temperature as cold as the inland areas. The summer months average lows from the mid-70s to highs in the upper 80s, depending on the time of the summer. The spring and fall are typically milder seasons. The fall and winter are usually warmer than areas inland, while the spring and the summer are often slightly cooler because of the moderating effects of being surrounded by water. Although