Top native birches and allies
24 species, native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
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Paper Birch
Betula papyrifera
keystone
caterpillars
395
hosts
18
food
68
flowers
7
shelter
2
-
Yellow Birch
Betula alleghaniensis
keystone
caterpillars
312
hosts
17
food
61
flowers
6
shelter
1
-
Gray Birch
Betula populifolia
keystone
caterpillars
290
hosts
15
food
48
flowers
6
-
Swamp Birch
Betula pumila
keystone
caterpillars
289
hosts
15
food
48
flowers
4
-
River Birch
Betula nigra
keystone
caterpillars
287
hosts
15
food
47
flowers
31
shelter
1
-
Sweet Birch
Betula lenta
keystone
caterpillars
282
hosts
21
food
49
flowers
10
shelter
1
-
Grey Alder
Alnus incana
caterpillars
272
hosts
15
food
62
flowers
4
-
Dwarf Resin Birch
Betula glandulosa
keystone
caterpillars
263
hosts
13
food
39
flowers
3
-
Heartleaf Paper Birch
Betula cordifolia
caterpillars
263
hosts
13
food
36
flowers
4
-
Green Alder
Alnus alnobetula
caterpillars
228
hosts
5
food
41
flowers
6
-
Smooth Alder
Alnus serrulata
caterpillars
183
hosts
4
food
29
flowers
8
-
Red Alder
Alnus rubra
caterpillars
179
hosts
7
food
22
flowers
8
-
Water Birch
Betula occidentalis
keystone
caterpillars
171
hosts
10
food
26
flowers
2
-
Beaked Hazelnut
Corylus cornuta
caterpillars
128
hosts
4
food
19
flowers
1
-
White Alder
Alnus rhombifolia
caterpillars
124
hosts
7
food
16
flowers
5
shelter
1
-
American Hazelnut
Corylus americana
caterpillars
124
hosts
5
food
16
flowers
11
-
Dwarf Birch
Betula nana
keystone
caterpillars
102
hosts
6
food
39
flowers
1
-
Seaside Alder
Alnus maritima
caterpillars
93
hosts
2
food
11
flowers
3
-
American Hophornbeam
Ostrya virginiana
caterpillars
85
hosts
7
food
26
flowers
5
shelter
1
-
Alaska Paper Birch
Betula neoalaskana
keystone
caterpillars
74
hosts
6
food
14
-
American Hornbeam
Carpinus caroliniana
caterpillars
55
hosts
6
food
15
flowers
6
-
Knowlton's Hophornbeam
Ostrya knowltonii
caterpillars
3
food
2
-
Virginia Roundleaf Birch
Betula uber
-
Big Bend Hop Hornbeam
Ostrya chisosensis