The most eco-friendly Christmas tree is one that lasts for years. Here’s how to choose, decorate, and care for a living tree
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Alpine fir (Abies lasiocarpa). Native. Slow-growing tree with bluish green needles; 60 to 90 feet tall.
Dwarf blue subalpine fir grows to just 3 to 4 feet tall in 10 years, ultimately reaching 6 to8 feet tall. Zones 1-9, 14-17.