northerly latitudes

Listing 1 - 5 from 5 for northerly latitudes

Floridata: Trachycarpus fortunei
... Gulf Coasts, and in mild areas along the west coast. It has been sighted in northerly latitudes from Charlotte, North Carolina to Atlanta, Georgia to Vancouver, British Columbia. This picture perfect hardy ...
www.floridata.com

Pinus edulis Engelm
... spring storms (13,14). Snow depths are not great, except at higher elevations and more northerly latitudes, but even then, melt generally occurs within a few days, especially on south-facing slopes ... frost-free period ranges from about 90 to 205 days, the shorter period typifying more northerly latitudes and higher elevations (59,67,73). Because of wide variation in temperature and the amount ...
www.na.fs.fed.us

Hardy Species Survey Explanation & Caveats
... which have a different geographic origin, or are from different elevations. Plants from higher latitudes and/or elevations are often hardier than their lower latitude/elevation relatives. For example ... among subspecies, varieties etc. of a species. Plants originating at higher altitudes or more northerly latitudes can be hardier. Some species’ ratings are based on the lowest temperatures recorded ...
www.rosebay.org

Acer rubrum L
... 51,000 cleaned seeds per kilogram (23,OOOflb). In general, fruits are heavier in northern latitudes. Red maple fruit from Canada, Wisconsin, and Michigan, where the normal growing season is ... air pollution, and drought (52,53). Red maple fruits also exhibit geographical variation. The more northerly sources, from locations with short frost-free periods, produced samaras that are shorter but heavier ...
www.na.fs.fed.us

Concerning the Origin and Distribution of Rhododendrons
... . We suggest that it was precisely this combination of very high mountains situated in tropical latitudes, and cycles of glaciation and deglaciation, that provided the dynamic conditions for the extraordinary speciation ... America or the Alps, for example, have about one half the relief and are more northerly than the region of extreme relief. Much of northern North America was covered by ice ...
www.rhododendron.org