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Re: Warm-climate autumns
> Do the following plants drop their leaves with the onset of > cooler
weather? Do they change color (reds, yellows)? > poplars/cottonwoods
(Populus) [...] Yes, they do. Populus: yellow to orange or red, sometimes
with blackish spots. [...]
David Marjanovic wrote:
Over here the poplars become yellow -- but there is frost every >winter, so
this doesn't count. In a climate without pronounced seasons plants >have
little reason to drop all their leaves at once, if they aren't >ill.
Plants(trees)drop their leaves in response to the shorting duration of
daylight. Most of the time this signals the onset of winter. In thoes
regions in which frost is rare, such as coastal areas, or non exsistant, as
in southernly latitudes, the plants still go through the motions and
progress through an dormant period though a much abriviated one. For the
most part, this applies to plants which are not native to these southernly
latitudes, or evolved further north and subsequently spread south. Plants
native to these latidues do not drop their leaves, or do so in responce to
different stimuli, such as a dry season.
Hope this helps.
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