Weeds and Their Control: Wild Parsnip (Pastinaca sativa)
Karen Brought to North American by European settlers for the food value of its root, wild parsnip escaped from gardens and is now found in most of the continental United States.…
Weeds and Their Control: Stinging Nettle (Urtica dioica)
Weeds that hurt you when you are gardening always seem especially threatening and stinging nettles are one of the most common. The stems and leaves of this perennial weed bear…
Weeds and Their Control: Creeping Bellflower (Campanula rapunculoides)
There are many bellflowers that are good garden plants but this is not one of them. Although the flowering stems are delightful and look lovely in a vase, the plant…
Weeds and Their Control: Common Ragweed (Ambrosia artemisiifolia)
The bane of every hay fever sufferer, common ragweed is a summer annual native to North America and is found throughout the United States including Hawaii but not Alaska. It…
Weeds and Their Control: Clammy Groundcherry (Physalis heterophylla)
If you are familiar with the cultivated plant Chinese lantern you will recognize its cousin, clammy groundcherry. Both are perennials in the genus Phasalis, produce papery lantern like structures, and…
Weeds and Their Control: Ivyleaf Morning Glory (Ipomoea hederacea)
A native of tropical areas of South America ivyleaf morning glory has spread to North America where it is now found from Arizona to Florida, north to North Dakota and…
Weeds and Their Control: Common Greenbrier (Smilax rotundifolia)
Hikers abhor this prickly perennial vine found in woodlands of the East Coast south to Florida and west to Michigan and Texas as it blocks their way and inflicts considerable…
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: Giant Foxtail Grass (Setaria faberi)
Giant foxtail was introduced into North America from East Asia in the 1930s and is now a common weed in the eastern half of the United States especially in the…
Weeds and Their Control: Spanish Needles (Bidens bipinnata)
Spanish needles is a summer annual native to tropical America. It is found along most of the East coast, Midwest, South and west to California. Spanish needles prefers partial shade,…