On Oct 28, 2015, at 10:11 AM, Phil Pugliese (via tml list) <xxxxxx@simplelists.com> wrote:

Hmmmm, guess I'll have to think of something else for the storms.

So, how long of a blackout is required to start killing plant life?

Depends on the plant. Remember; deciduous trees go for 6 or more months at a time without leaves, hence without need for sunlight. Depending on when the darkness happens, food crops would be dead within a few months. If it happened during springtime your crops would fail; if it were during the fall, you’d get that years crop.

I found this with a cursory google search http://www.madsci.org/posts/archives/2003-10/1065676398.Bt.r.html

How long does if have to be for big trees to be affected to the point that they could fall down (even if it doesn't happen till later)?

This would  be VERY long…dead trees, in the absence of strong winds will remain standing for a very long time. 

-- 
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs

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