ragweed pollen, pollen, crabgrass, hay fever, henbit, poison ivy, johnsongrass, powdery mildew, poison sumac, buckthorn, purple loosestrife, leafy spurge, urushiol, pigweed, horseweed, anthracnose, chickweed, fall webworm, musk thistle, ryegrass, knotweed, aphids, armyworms, verticillium, hairy vetch, nutsedge, bagworm, butterbur, defoliation, goosegrass, kochia, goldenrods, hogweed, whitefly, reed canary grass, cow parsnip, lesser celandine, webworm, wild parsnip, biotype, budworm, chinch bug, allergen, forest tent caterpillar, allergy, cankerworms, italian ryegrass, root rot, blister rust, broadleaf, fall armyworm, leafminer, sclerotinia, phytophthora, knapweed, downy mildew, spider mite, bunchgrass, phoma, leaf scorch, grasses, sawfly, vetch, foxtail, groundsel, malathion, honeysuckles, yellowjacket, spurge, cheatgrass, tillering, fleabane, weeds, winterkill, cutworms, sweet clover, corn earworm, endophyte, milkweed, caterpillars, fungi, mites, rebloom, fusarium, hessian fly, bindweed, tent caterpillar, stem canker, sericea lespedeza, chlorosis, lovebug, dandelions, downy brome, oxalis, crimson clover, juglone, shrub, striga, forsythia, stinkweed, flowering shrub, pachysandra, nettle, rye, sedges, spruce, beech, fir, pines, sagebrush, willows, aspen, bamboo, bamboos, birch, cedar, conifers, grassland, hemlock, mangrove, mesquite, oat, rabbit, rickettsial, lipopolysaccharide, rhesus, tyrosine, 70, antitumor, atpase, beaver, blackberry, cd20, cd28, cryptococcal, cyclin, cytokine, cytoplasmic, dandelion

ambrosia artemisiifolia, ambrosia psilostachya, ambrosia trifida, common ragweed, great ragweed, perennial ragweed, western ragweed

ambrosia psilostachya, asteraceae, aster family, compositae, family asteraceae, family compositae, perennial ragweed, pollen count, ragweed pollen, western ragweed

weed

ambrosia, benweed, bitterweed, ragwort, senecio jacobaea, tansy ragwort