Weed-opedia: Yarrow

Yarrow
Yarrow (Achillea millefolium) What does it look like?:  Yarrow is a low growing perennial with wispy leaves similar to small ferns.  The flower stalks are much taller, and slightly hairy.  The flowers are typically white, but may be pink or yellow. What causes it?:  Yarrow is not always considered a nuisance.  It is commonly used for
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Weed-opedia: Musk Thistle

Musk Thistle
Musk Thistle (Carduus nutans) What does it look like?:  A typically biennial plant with long spiky leaves in a rosette at the base, and a large purple flower atop a spiky stem. What causes it?:  Sparse turf When does it show up?: Late spring Best treatment plan:  Hand-pulling is effective for small infestations.  Post-emergent herbicide
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Weed-opedia: Corn Speedwell

Corn Speedwell
 Corn Speedwell (Veronica arvensis) What does it look like?:  A low growing plant with upright stems covered with fine hairs.  The lower leaves are more rounded, and the upper leaves pointed.  Small flowers of white to blue in the leaf axis.   What causes it?:  Loves thin grass and dry soil.  Poor lawn turf is
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Weed-opedia: Curly Dock

Curly-Dock
Curly Dock (Rumex crispus) What does it look like?:    A rosette of spear-shaped, wavy-edged leaves at ground level.  From this a tall, hairless, ribbed stem emerges with small green flowers at the top. Becomes brown with age, but may also take on a red tinge. What causes it?:  This weed especially likes roadsides and fields
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Weed-opedia: Yellow Woodsorrel

Yellow Woodsorrel
 Yellow Woodsorrel (Oxalis stricta) What does it look like?:  Heart-shaped green leaves attached at the tips in groups of three (similar to shamrocks) and small yellow 5 petaled flowers What causes it?:  It reproduces by seed, and tends to germinate later than many other weeds, and often escapes spring herbicide applications.  It also has stolons,
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Weed-opedia: Wild Violet

Wild Violet
 Wild Violet (Viola Sororia) What does it look like?:  Broad heart-shaped leaves, and purple or white pansy-like flowers. What causes it?:  Overly acidic soil lacking calcium.  They are spread by seeds and underground stems. Wild violets are very drought resistant. When does it show up?:  Blooms March through May. Doesn’t like heat. Best treatment plan: 
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Weed-opedia: Prostrate Knotweed

Prostrate Knotweed
Prostrate Knotweed (Polygonum Aviculare) What does it look like?: It is a dense, creeping weed with clusters of green leaves  on thin branches, which protrude out from a central taproot. Prostrate Knotweed produces small pink flowers as well. What causes it?: Poorly compacted soil with thin grass/turf. When does it show up?: Seeds begin to spread in late Winter to
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Weed-opedia: Common Chickweed

Chickweed
Common Chickweed (Stellaria Media) What does it look like?: Chickweed is a dense, fast spreading weed with green foliage and which spiklet flowers. What causes it?: Chickweed thrives in cool, humid temperatures and goes dormant during times with little moisture and high temperatures. When does it show up?: Early Spring to late Fall. Best treatment plan: Use a selective post-emergent
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Weed-opedia: Three Flowered Beggarweed

Three Flowered Beggarweed
Three Flowered Beggarweed (Desmodium Trifolium) What does it look like?: This a dwarf Beggarweed. So just like its siblings, it is a creeping perennial with stems that produce clusters of three green leaves. It also produces light purple to pink flowers. What causes it?: The bur-like seeds easily latch on to clothes or fur, allowing it to
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Weed-opedia: White Clover

Clover
White Clover (Trifolium Repens) What does it look like?: Quite a distinct weed, it is sometimes mistaken for a flower. Typically found in clover patches, the White Clover is a creeping weed that produces bright white flowers and (usually) three green leaves. What causes it?: Soil with low Nitrogen. When does it show up?: Grows during
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