Top native Polygoninae
37 species, native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
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Douglas' Knotweed
Polygonum douglasii
caterpillars
35
food
44
flowers
14
-
Bushy Knotweed
Polygonum ramosissimum
caterpillars
32
food
46
flowers
16
-
Leathery Knotweed
Polygonum achoreum
caterpillars
31
food
42
flowers
14
-
Small's Knotweed
Polygonum buxiforme
caterpillars
28
food
40
flowers
16
-
Milkwort Knotweed
Polygonum polygaloides
caterpillars
28
food
39
flowers
13
-
Slender Knotweed
Polygonum tenue
caterpillars
27
food
41
flowers
16
-
Sea Knotweed
Polygonum glaucum
caterpillars
27
food
36
flowers
15
-
Erect Knotweed
Polygonum erectum
caterpillars
25
food
36
flowers
11
-
Broadleaf Knotweed
Polygonum minimum
caterpillars
20
food
38
flowers
6
-
Scatter Knotweed
Polygonum spergulariiforme
caterpillars
18
food
35
flowers
5
-
Beach Knotweed
Polygonum paronychia
caterpillars
17
food
34
flowers
5
-
Wiry Knotweed
Polygonum majus
caterpillars
17
food
34
flowers
5
-
Nuttall's Knotweed
Polygonum nuttallii
caterpillars
16
food
33
flowers
5
-
Sawatch Knotweed
Polygonum sawatchense
caterpillars
15
food
38
flowers
3
-
Fowler's Knotweed
Polygonum fowleri
caterpillars
15
food
33
flowers
5
-
Bolander's Knotweed
Polygonum bolanderi
caterpillars
14
food
34
flowers
3
-
Shasta Knotweed
Polygonum shastense
caterpillars
14
food
33
flowers
5
-
California Knotweed
Polygonum californicum
caterpillars
14
food
33
flowers
3
-
Cascade Knotweed
Polygonum cascadense
caterpillars
14
food
32
flowers
3
-
Parry's Knotweed
Polygonum parryi
caterpillars
13
food
33
flowers
3
-
Bidwell's Knotweed
Polygonum bidwelliae
caterpillars
12
food
32
flowers
3
-
Marin Knotweed
Polygonum marinense
caterpillars
11
food
34
flowers
3
-
Mrs. Austin's Knotweed
Polygonum austiniae
caterpillars
9
food
33
flowers
4
-
Utah Knotweed
Polygonum utahense
caterpillars
5
food
32
flowers
2
-
Sandhill Wireweed
Polygonella robusta
food
2
flowers
20
-
October Flower
Polygonella polygama
food
1
flowers
15
-
Tall Jointweed
Polygonella gracilis
flowers
5
-
Coastal Jointweed
Polygonella articulata
flowers
2
-
Fringed Jointweed
Polygonella ciliata
flowers
2
-
Florida Jointweed
Polygonella basiramia
flowers
2
-
Small's Jointweed
Polygonella myriophylla
flowers
1
-
American Jointweed
Polygonella americana
-
Largeleaf Jointweed
Polygonella macrophylla
-
Sandhill Jointweed
Polygonella fimbriata
-
Texas Knotweed
Polygonum striatulum
-
Parks' Jointweed
Polygonella parksii
- Polygonum heterosepalum