Since we're dick measuring: come to Slovenia some time. 60% of the country covered in forests. NatGeo just voted us the most sustainable country in the world.
Forests cover 75 percent of Finland's land area. For every Finn, there is around 4,2 hectares of forest. In Finland, land area is classified according to its use. 86 percent of land area is forestry land.
It is very green, unless it is winter in which case it is either white (due to snow) or bleak and miserable due to darkness.
As a Norwegian (from Oslo) living in London, who has visited Finland during the summer and found it "bleak and miserable" even then (ok, so not all the time we did have some days with sun too), I'm not surprised. Though London is bleak and miserable compared to Oslo even during the winter (I prefer snow over rain any day..)
But anyway, come to Tasmania in June through August, go for a hike in the temperate rainforests and see some of the tallest flowering trees in the solar system.
Also we do artisan coffee (or just coffee if you're not in to that wank) out of a trailer we hand-built from the ground up.
It's not, compared to the pacific northwest. I recall taking photos on my first visit to an Oregon university because they _obviously_ were watering their lawn in the winter to keep it that green instead of letting it go dormant.
A large sliver of the PNW is temperate rainforest, so yes. When you have areas that get 100-170 inches of rain a year (e.g. Olympic peninsula area), it's probably going to be very green at that point.
Other than during the spring, most of TX is not particularly green (to put it charitably), even by the coast where it rains more.
Source: have lived there for a long time