ACROSS
1Douglas-fir fire retardant?
7Heterophylla translation
14Prickly character
15Winged maple seed
16Upland willow
18Male cone output
21Washington state tree
22Rhymes with hakuna matata
25What the microbes in alder root nodules do to nitrogen
27Gets you going?
29The language of tree names
32Five-needle pines
33This type of oak is also called Oregon white oak
34This type of tree's seeds scare Chicken Little
35Waxy stripes on conifer needles
38May-bloomer
39Namesake of several northwest species
42Type of tree that loses its leaves in the fall
43Lowland Abies
44Acer Macrophyllum leaf size
45This type of tree has extrafloral nectaries.
46Alaskan city and spruce namesake
DOWN
2Douglas-fir cones and dogwood flowers have these
3Willow
4Foot-long cone
5Don't eat the seed
6How do I tell a tree by its ___?
8Lodgepole pine's alter-ego
9Premier source of forestry info in WA
10Douglas-fir and red alder don't tolerate it
11Hemlock genus
12Comes before species
13Pacific yew's fleshy "cone"
17Western redcedar's family
19Longest-lived northwest species
20Confir reproductive structure
23AKA western redcedar
24Type of root disease that Douglas-fir is particularly susceptible to
26Broad-leaved trees
27Snowing in June?
28The male counterpart to a strobile on alder
30Native cherry
31Naked seeds
36Evergreen broadleaf
37The leaf margin rolls under
40True firs
41Maple genus