Weeds and Their Control: Canadian Thistle (Cirsium arvense)
Karen The attractive flowers on Canadian thistle belie the fact that this plant is one of the most persistent weeds that can come into the garden. A native of Eurasia, it…
Weeds and Their Control: Wild Garlic (Allium vineale)
A native of Europe, wild garlic was brought to North America in soil used as ballast in ships. It has become an invasive weed in many parts of the eastern…
Weeds and Their Control: Broadleaf Dock (Rumex obtusifolius)
Broadleaf dock, also called bitter dock, is a perennial native to Europe but is now found throughout the United States and southern Canada. It prefers partial to moist, shady, disturbed…
Weeds and Their Control: Water Hemlock (Cicuta maculate)
Water hemlock is also known by other names such as spotted parsley, poison parsley, and spotted cowbane. It belongs to the carrot family and is related to poison hemlock, parsnips,…
Weeds and Their Control: Pokeweed (Phytolacca americana)
Pokeweed is a perennial weed native to eastern United States, the Midwest, and the Gulf Coast but has spread to the west coast, avoiding the Mountain states. It prefers part…
Weeds and Their Control: Common Milkweed (Asclepias syriaca)
Common milkweed is native to most of the United States east of the Rocky Mountains. It prefers full sun, fertile soil, and mesic conditions but tolerates much less and can…
Weeds and Their Control: Johnson Grass (Sorghum halepense)
Considered one of the ten worst weeds in the world, Johnson grass is a perennial weed native to the Mediterranean region but growing throughout Europe, as well as in the…
Weeds and Their Control: Quackgrass (Agropyron repens)
A rough looking cool weather perennial, quackgrass is a native of Europe, Asia and northwest Africa that was introduced into the United States for forage or as a contaminant in…
Weeds and Their Control: Common Sorrel (Rumex acetosella)
Common sorrel is a short-lived perennial weed also known as sheep sorrel and red sorrel. It is a native of Europe and Asia and probably came to America in the…
Plant Profile: Stinging Nettle (Urtica dioica)
Every year I have a private little war with the stinging nettles that grow in both my rose garden and formal garden. No matter how many I pull up, there…