Top native ragweeds
21 species, native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
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Giant Ragweed
Ambrosia trifida
caterpillars
39
hosts
4
food
42
flowers
68
-
Common Ragweed
Ambrosia artemisiifolia
caterpillars
34
hosts
2
food
54
flowers
28
-
Western Ragweed
Ambrosia psilostachya
caterpillars
33
hosts
2
food
36
flowers
9
shelter
1
-
Lanceleaf Ragweed
Ambrosia bidentata
caterpillars
29
hosts
1
food
27
flowers
2
-
Slimleaf Bursage
Ambrosia confertiflora
caterpillars
24
hosts
1
food
23
flowers
3
-
Flatspine Bursage
Ambrosia acanthicarpa
caterpillars
21
hosts
2
food
28
flowers
7
-
Outcrop Ragweed
Ambrosia porcheri
caterpillars
20
food
21
flowers
2
-
Singlewhorl Burrobrush
Ambrosia monogyra
caterpillars
19
hosts
1
food
25
flowers
1
shelter
2
-
Rio Grande Ragweed
Ambrosia cheiranthifolia
caterpillars
17
food
21
flowers
1
-
Woollyleaf Bur Ragweed
Ambrosia grayi
caterpillars
17
food
20
flowers
1
-
Coastal Ragweed
Ambrosia hispida
caterpillars
16
hosts
1
food
18
flowers
1
-
Skeletonleaf Bur Ragweed
Ambrosia tomentosa
caterpillars
15
food
25
-
Burrobush
Ambrosia dumosa
caterpillars
12
hosts
3
food
21
flowers
18
-
Streaked Bur Ragweed
Ambrosia linearis
caterpillars
12
food
22
-
Cheesebush
Ambrosia salsola
caterpillars
11
hosts
1
food
24
flowers
27
-
Silver Beachweed
Ambrosia chamissonis
caterpillars
10
hosts
1
food
21
-
Woolly Bursage
Ambrosia eriocentra
caterpillars
8
food
17
flowers
1
-
Big Bursage
Ambrosia ambrosioides
caterpillars
7
hosts
4
food
20
flowers
4
-
San Diego Bursage
Ambrosia chenopodiifolia
caterpillars
6
food
17
-
San Diego Ambrosia
Ambrosia pumila
caterpillars
6
food
16
flowers
1
-
Holly-leaved Bursage
Ambrosia ilicifolia
caterpillars
5
food
17
flowers
1