Why this weed is a winner

Got one of those March colds? In the old days, you might have turned to a March weed for help.

Many roadsides will soon be lined with Coltsfoot, a wildflower whose bright yellow blooms are often mistaken for dandelions.

Although it’s colorful and among the earliest and hardiest of the spring wildflowers, Coltsfoot was imported from Europe not for its beauty, but for its alleged abilities as a cough medicine. Its generic name, Tussilago, means “cough dispeller,” and for centuries its juices were used like Pertussin or Robitussin (notice those coughing “tusses”) from the drug store. Ailing New England children in the 19th Century were fed Coltsfoot drops, made of plant extract and sugar.

Don’t do it today, however. Modern research suggests ingesting Coltsfoot may cause liver tumors.

Instead, enjoy Coltsfoot for a different characteristic. The import has adapted to some of the worst soils North America can offer. The most likely place to see it is in within a foot or two of highway pavement – soil permeated with winter sand and salt, oils from asphalt and cars, and, yes, litter.

If there’s a terrain in need of beautifying, it’s our roadsides, especially in spring when we are hungry for outdoor color. This post-winter weed is a winner.

Troubled waters

Not all invasive plants are found in woods and wetlands. Aliens also harm lakes, ponds and streams. Witness water thyme, which a UConn professor called “one of the world's worst weeds” and the director of the Invasive Plant Atlas of New England described as “a thug.”

Imported from Africa as an aquarium plant, Hydrilla verticillata clogs lakes and streams, pushes out native species of plants, fish and birds, and can even halt boat traffic. Across the nation hundreds of millions of dollars have been spent battling water thyme, using everything from herbicides to a Hydrilla leaf-mining fly from Pakistan.

While one group of scientists looks at how to kill Hydrilla, another eyes it from a different angle. Researchers have found water thyme is rich source of proteins, calcium, potassium, lipids, carotenoids, RNA, DNA, magnesium, iron, vitamins B1, B2, B3, B5, B12, phosphorus, manganese, zinc, copper, cobalt, 17 amino acids, and essential enzymes. Some claim it's an effective muscle builder and energy enhancer. University studies indicate it may be an appetite suppressant.

And that's just for humans. The University of Florida has found that water thyme increases the yield of milk in dairy cattle and the egg-laying capacity of hens.

So maybe there's another answer to controlling this latest invasive thug: Let’s all eat it.

Alien invasion

A new invasion of alien plants is looming, but the invaders are not from the east or west, but the south.

For centuries, aliens have been arriving from Europe and Asia, imported as garden flowers, herbal flavorings or medicines, or just hitching a ride with crop seeds. They came from climates similar to ours and, finding no enemies, the likes of Garlic Mustard, Purple Loosestrife, Japanese Knotweed, and Japanese Barberry thrived to become pests.

Enter global warming. As the New England winters weaken, both plants and animals that could not survive here are moving northward. While white birches and other species are dying off because of the warmth, palms are already surviving in southern New Jersey and Pennsylvania, and kudzu, which has been called “the plant that ate the South,” has crossed the Mason-Dixon and is already in Connecticut.

How to deal with so complex a problem befuddles even the experts, but it can’t hurt for us to leave a smaller footprint on our Earth, while at the same time, stomping invasives when we spot them.

The weed wars

The airwaves have been bursting with commercials warning of ugly invaders called dandelion, chickweed, and crabgrass. Chemical answers are offered, and Americans will spend billions in the war against weeds.

Why bother? What's so bad about having a few wildflowers mixed in with your grass? Why must all the lawn's greens looking monotonously alike? Why shouldn't a lawn, like a garden, have variety of color and shape?

Think of the advantages of a natural lawn: Less expensive (no chemicals to buy), less work (no weeding), fewer worries (buttercups won't bug you), fewer potential health hazards (that's poison you're pouring on those dandelions), more color and form (natural lawns are interesting, have variety, offer surprises), and more wildlife (songbirds love weed seeds).

The disadvantages? Well, you’ll still have to mow every week or two. And maybe it's a little tougher to practice your putting.

Roadside vitamins

“What are all those white flowers along the road – every road?!” someone asked.

Twenty-five years ago, Garlic Mustard was an occasionally seen import that few knew. Today, the weed has spread to the point where plant conservationists are alarmed. These alien invaders are overcoming native species, and efforts have been organized to do them in. The most basic technique is to pull them up -- they have a tiny root system and are easy to yank.

But we have another suggestion: Eat them! In its native England, Garlic Mustard has long been a food. In fact, that's how it probably got here; Virginia settlers were using it by 1700. The garlicky leaves are used as vegetables and salad greens. Old World farmers found them so flavorful, they filled sandwiches with them.

What’s more, this tasty pest is good for you. Garlic Mustard leaves have more than twice the vitamin A of spinach and 20 times more than tomatoes. They also have nearly four times the vitamin C of oranges and nine times that of tomatoes.

So why waste a good weed?