Weed of the Month: Sandburs
Though not toxic, burs found on the plants can cause mechanical damage if horses consume them.
Though not toxic, burs found on the plants can cause mechanical damage if horses consume them.
Star-of-Bethlehem is a cool-season perennial of the lily family.
Buckhorn plantain is widespread across North America and is a common plant in various pastures and turf.
Common milkweed produces cardiac-glycosides that are toxic to horses and can cause death within 24 hours.
Mild neurotoxicity to horses was reported in Europe but is not considered a serious threat in North America.
Broadleaf plantain is widespread across North America and is a commonly occurring plant in all types of pastures and rough turf. It readily survives overgrazing and compacted horse pastures, especially when rainfall is limited.
Red maple is a valued landscaping tree in the eastern United States and Canada but is also toxic to horses.
Taxus species, frequently called “yew” are used as ornamentals in much of the eastern United States and Canada. Generally, these evergreen plants are found in highly managed landscapes. Taxus plants thrive under many conditions, which make them a pop
White snakeroot is a warm-season perennial frequently found in shaded areas of pastures near streams or woods.
Henbit and purple deadnettle are winter annual weeds of the same genus and are often confused with each other.
Spiny pigweed control is accomplished easily by applying herbicides to plants shorter than 12 inches tall.
Bush honeysuckle describes several species of woody honeysuckles found in the eastern half of the United States. Types of bush honeysuckles include Amur honeysuckle, Morrow’s honeysuckle, and Tartarian honeysuckle. All grow rapidly and produce multiple stems and can reach heights of about 30 feet. These deciduous woody shrubs are shade tolerant and flourish around stream borders and fence rows.
Tall ironweed is distributed widely across the eastern half of the United States and is found in low damp areas of pastures and roadsides. This tall, upright plant can approach 10 feet under optimum growing conditions but more commonly grows to about 5 feet.
Common cocklebur is distributed widely across the United States and occurs in pastures and cultivated crops. Infestations in pastures are usually more of a problem during periods of drought or due to overgrazing and most frequently occur in field margins.
Goosegrass is a warm-season grass that germinates and emerges in spring and grows throughout the summer until the first killing frost.
Canada thistle is distributed across the northern United States and Canada. It’s listed as noxious in many states and classified as a prohibited noxious weed seed in many state seed laws.
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