FINALLY: GOTCHA! For decades each summer I have pulled thousands of self-sown seedlings of a plant whose name eluded me, but whose habit and appearance were all too familiar. I’d come upon one stand after another, summer after summer, lurking in masses under shrubs and trees and even under large perennials. But what was its name? And now I know: It’s clearweed, or Pilea pumila, a cousin of stinging nettle (Urtica dioicia) but minus the barbs, and a North American native. A little about Pilea pumila, and about learning to name–and tackle–your weeds. And also why to sometimes leave a little for the native insects to enjoy.
I knew my garlic mustard from lamb’s quarters or mugwort, wild grape from bittersweet or Ampelopsis, oxalis from everything else. But clearweed kept me in the dark longer than most. I could have guessed at its common name, since the stems are practically translucent, or clear. And no wonder I have so much of it: It favors moist soils such as mine generally is, and shady and semi-shady spots in or near woodlands such as the one I garden on the edge of.
The USDA conservation map show the presence of Pilea pumila in 38 states, and parts of eastern Canada. The Flora of North America (efloras [dot] org) says that Native Americans used clearweed medicinally, “to alleviate itching, to cure sinus problems, and to treat excessive hunger.” The Illinois Wildflowers website notes that certain native insects use the plant, too. All these years, the only thing I thought it was useful for? To aggravate me.
Turns out various caterpillars of moths and butterflies enjoy it as a host plant (they’re listed here and include the comma and the red admiral), and so my new policy is to leave a couple of out-of-the-way patches of
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I am often asked to recommend plants for problematic garden areas during my call-in radio program or after public-speaking engagements. As a result, over the years I have developed a list of my top picks for sunny and shady gardens depending on whether the soil is dense, heavy, and clay-based, or lean, sandy, and quick-draining. Fortunately, I have experience gardening with both soil types, and so I know that each presents its own challenges and opportunities. Here are a few options for perennials, trees, and shrubs that can survive and even thrive in the trickiest soil conditions.
Parasitic plants derive their required energy and nutrition from other plants, hindering their growth. Here is a list of some Unwanted Plants that are Parasites!
Tomato plants are a staple in many gardens, but did you know that there are weeds out there that can easily be mistaken for them? From horse nettle to black nightshade, check out these Weeds that Look like Tomato Plants.
The tropical rain forests of South America hold a treasure when it comes to plants that are beautiful, exotic, and can make for great houseplants. Have a look at the most amazing South American Indoor Plants you can grow!
You can trim your hedges and shrubs and / or trim up your garden with ornaments. No two gardens will ever be the same and your ‘trimming’ will help create your own unique style. I for one want more humour including Sherlock Gnomes and fertilising leaks and peas among my cabbages.
I do not want to start by worrying you but I am probably going too anyway! After an early summer of brilliant rose displays the down side is the number and volume of enemies our roses are having to contend with.
Virginia creeper is a native North American, deciduous vine, which can easily climb 30 feet or higher. Its tendrils end in oval shaped disks that adhere to surfaces and can damage stucco, the mortar between bricks, and painted surfaces. This highly adaptable plant grows in full sun to full shade. Grown as a groundcover, it can provide erosion control on slopes. Virginia creeper is very drought tolerant and a vigorous grower. To control the spread of this somewhat aggressive vine, prune, mow, or weed whack in the spring.
Virginia copperleaf is a tall, branched summer annual that can grow three feet tall. It takes its name from the copper colored leaves of its late summer color. This weed is a North American native that is found from Maine to Georgia and as far west as Texas and north to South Dakota. It is a member of the spurge family and is poisonous, but it does not have the milky sap that is typical of other family members. The simple leaves are oppositely arranged on the stems when the plant is a young seedling, but they change to an alternate arrangement as the weed matures.
It’s late summer and crabgrass weeds have invaded some lawns. Unfortunately, crabgrass is very difficult to control with most herbicides once it develops a few tillers or branches. There are several species of crabgrass (Digitaria spp.): tropical crabgrass, smooth crabgrass, India crabgrass, large crabgrass, Southern crabgrass, and blanket crabgrass. All of them are summer annuals that germinate primarily in spring, grow during the summer, set seeds, and then die with the first frost.
Smilax vines go by the common names greenbrier or catbrier due to the thorns covering their stems. There are 300 to 350 smilax species worldwide. Approximately twenty-four species are native to North America, with fifteen species growing in South Carolina. Smilax grows well in moist shade and is an important food source and habitat for wildlife, including birds, rabbits, and deer.