Stallergenes Greer

Allergenic Weeds of Texas



Cells Marked With () signify taxon present in area.
Cells Marked With () signify marginal or occasional presence.
Unmarked Cells signify taxon absent in area or unconfirmed.

Cross-reactive species grouped together in colored cells
2 Italicized species demonstrate only moderate cross-reactivity with other(s) in the group
3 This species is insect-pollinated

Most weeds pollinate in the fall.

El Paso   OdessaMidland   LubbockAmarillo   San Angelo   AustinSan Antonio   McAllenCorpChristi   Houston   LufkinTyler   DallasFtWorth
Cross-Reactive Weeds 1                                  
                                   
32: Careless Weed         x       x   x   x   x   x
49: Palmer's Amaranth x   x   x   x   x   x   x   x   x
52: Pigweed, Rough/Redroot : Click for botanical profile x       x       x   x           x
53: Pigweed, Spiny : Click for botanical profile         x       x   x   x   x   x
40: Hemp, Water         x       x           x   x
                                   
44: Marsh Elder, Burweed : Click for botanical profile         x                        
45: Marsh Elder, True/Rough : Click for botanical profile                 x   x   x   x   x
                                   
185: Ragweed, False : Click for botanical profile x       x                        
55: Ragweed, Giant : Click for botanical profile         x       x       x   x   x
56: Ragweed, Short : Click for botanical profile             x   x       x   x   x
58: Ragweed, Western : Click for botanical profile x   x   x   x   x   x   x   x   x
                                   
199: Saltbush, Annual x                                
206: Wingscale : Click for botanical profile x   x   x   x       x            
                                   
Other Weeds                                  
                                   
225: Baccharis : Click for botanical profile x               x   x   x   x    
33: Cocklebur : Click for botanical profile x   x   x   x   x   x   x   x   x
                                   
35: Dock, Yellow/Curly : Click for botanical profile         x       x           x   x
Dock/Sorrel, other x   x   x   x   x   x   x   x   x
                                   
212: Iodine Bush : Click for botanical profile x                                
42: Kochia/Firebush : Click for botanical profile         x                        
43: Lamb's Quarter : Click for botanical profile         x       x           x   x
36: Nettle : Click for botanical profile     x           x   x   x   x   x
54: Plantain, English : Click for botanical profile     x           x       x   x   x
48: Sage/Darklf. Mugwort : Click for botanical profile x   x   x   x   x   x   x   x   x
59: Russian Thistle : Click for botanical profile x   x   x   x                  

Data obtained from USDA Plants Database.


For current pollen counts visit www.pollen.com or enter a zip code below.

 

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