Top native hemlocks
4 species, native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
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Western Hemlock
Tsuga heterophylla
caterpillars
94
food
6
flowers
2
shelter
2
-
Eastern Hemlock
Tsuga canadensis
caterpillars
71
hosts
7
food
21
flowers
4
shelter
1
-
Mountain Hemlock
Tsuga mertensiana
caterpillars
42
hosts
2
food
4
flowers
1
-
Carolina Hemlock
Tsuga caroliniana
caterpillars
31
hosts
1
food
9
flowers
1