Oh, man, other tree people!
Some people look at me funny when I start talking about trees. My little sister thinks it's boring. But after 3ish years of working in the forest I can't help but know my trees and shrubs and appreciate their various qualities and intricacies
My favorite trees of the Inland Northwest U.S. are the Tamarack (more 'properly' known as Western Larch) and the enigmatic, classic Christmas tree, the Blue Spruce.
Tamarack just grows amazingly tall. It has these fine, short, emerald needles with sparse branches only growing from the top portion of the tree, and it's the only connifer (cone-bearing tree) to lose it's needles in the fall!
It also makes the best firewood. Because it's so straight-growing, and packs a lot of BTUs even when it's nice and dry, it's easy and efficient to harvest and split. I've actually spent the past two weeks out in the forest helping my dad get his wood in for the winter. It's been a lot of fun.
Blue Spruce fills out really bushy with a solid 'cone' shape as long as the tree is not topped. Interestingly, when the tree is young you can identify multiple tops on the sappling. The tree eventually chooses the one that is doing best to become the top and grows from that one henceforth. As with all connifer trees, the tree grows extremely well and very healthy with human assistance; removing the lower limbs, approximately a quarter of the trees height, allows it to shift energy and nutrients to growing upward and layering out and maintaining it's more efficient, sun-exposed branches. Selective thinning of younger trees allows the stronger, healthier ones to gain an early advantage and grow large and strong very quickly; the thinned trees and shrubs can then be chipped to the forest floor to provide nutrients for the next generation. This and other factors are important aspects of modern, sustainable forestry and timber harvest.
Wow, got kinda sidetracked there. I love this stuff, though.
If you don't spend much time out in the sticks, I highly recommend investing in some hiking boots and go to your local Forest Service office to get one of their maps, and just go exploring. It's different, it's RELAXING, it's healthy and it's fun. Just do it!
Here's an article and some good pictures of the Tamarack:
http://aullori.wordpress.com/2007/10/29/the-western-larch-tree/
We also have an interesting, beard-like moss that grows on the Western Larch as well as the Red Fir trees here, called Deer Moss. Great fire starter.