Weed Identification for NRCA - Purdue Agriculture - Purdue University

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Johnson Grass - Creeping rhizome Reddish flower structure seedling Tall mature plant Reproduces by creeping rhizome - horizontal underground stem
Johnson Grass Creeping Perennial Rhizome
Page 1 and 2: Weed Identification NRCA - 2006 Pur
Page 3 and 4: Plant Characteristics Broadleaf Fo
Page 5 and 6: Grasses Plant Characteristics Narro
Page 7 and 8: Annuals Annuals complete their lif
Page 9 and 10: Wild Geranium Winter Annual Leaves
Page 11 and 12: Crabgrass Summer annual Flat, sprea
Page 13 and 14: Kochia - Summer Annual Multi-branch
Page 15 and 16: Lambsquarter Annual White patches o
Page 17 and 18: Giant Ragweed - Summer Annual Leaf
Page 19 and 20: Yellow mustard rosette
Page 21 and 22: Biennials Live for two growing sea
Page 23 and 24: Wild Carrot Biennial 2 nd year - wh
Page 25 and 26: Bull thistle - Biennial Tap-rooted
Page 27 and 28: Bull thistle biennial larger flow
Page 29 and 30: Drooping, flat flower head Musk Bul
Page 31 and 32: Perennials Produce vegetative stru
Page 33 and 34: Reproductive Structures Rhizomes -
Page 35: Cattail Perennial - Creeping rhizom
Page 39 and 40: Dandelion - Simple perennial
Page 41 and 42: Yellow-star thistle - Annual or Per
Page 43 and 44: Canada thistle - Perennial creeping
Page 45 and 46: Common Milkweed Perennial -deep roo
Page 47 and 48: Flowers in fall Goldenrod Perennial
Page 49 and 50: Thorns on leaves and stem Fruit lik
Page 51 and 52: St. Johnswort - Perennial Flower wi
Page 53 and 54: Stinging Nettle Perennial opposite
Page 55 and 56: Ivy-leaf morning-glory Summer annua
Page 57 and 58: Blackberry - Woody vines Three leaf
Page 59 and 60: Leaves are opposite Japanese honeys
Page 61 and 62: Poison Ivy Perennial Vine Leaf has
Page 63 and 64: Poison oak and ivy comparison Poiso
Page 65 and 66: Virginia creeper - Perennial
Page 67 and 68: Trumpet creeper - Perennial vine Co
Page 69 and 70: Black locust Compound leaf with rou
Page 71 and 72: Red or slippery elm Serrated edges
Page 73 and 74: Siberian elm Slime flux Whitish app
Page 75 and 76: Ash Compound leaf
Page 77 and 78: Sassafras and Mulberry Smooth edges
Page 79 and 80: Sugar maple 3 Shallow sinuses 4 2 1
Page 81 and 82: Red oak Bristle or pointed tips Oak
Page 83 and 84: Sweetgum Spiny fruit Star shaped le
Page 85 and 86: Tree-of-heaven Large leaf Large sti
Page 87 and 88:
Equisetum arvense horsetail Sterile
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Weed Identification for NRCA - Purdue Agriculture - Purdue University

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