[gardengirl]

My ? is—did it occur to anyone that plants can’t survive 6 months of no light? Maybe they need to rethink something.

[Tarpon]

The Boreal forests used to grow up to the arctic ocean shoreline, back when it was much warmer. Not sure the daylight thing is accurate though. Since some plants do live there now and it's dark for quite a bit of the year. Speedy grow plant seeds.

In the NH north in the winter, broadleaved trees completely lose their leaves which shuts down the need for photosynthesis. So I think trees can hibernate, as long as their sap doesn't freeze solid and as long as the tree's deep roots don't freeze, and there is water down in the soil, it can survive darkness.

As it is, I think the cold is what kills the trees off, not the lack of sunlight for parts of the year. Some of the Boreal Forests today in N Canada are in the constant dark right now. We used to do high altitude rocket solar research at Ft Churchill Canada and the tree line, IIRC was constant dark when we were there in winter.?

Yes no maybe?

[beebuster2000]

there are plenty of plants in the arctic right now that survive a long darkness.