There are many respectable plants bearing the word “weed” in their common name, such as Butterfly Weed (Asclepias tuberosa), Joe Pye Weed (Eutrochium spp.), and Jewelweed (Impatiens capensis). Some are easily available at garden centers, some are available only by mail order, while still others will show up in the garden on their own. All demonstrate a propensity for spreading easily if conditions are right, and that is perhaps the reason for the designation “weed” in their common names. Latin names typically are not prejudiced against these less formal plants that straddle both the garden and the wilds.
Monarch butterfly on a Butterfly Weed at Cape May National Wildlife Refuge in New Jersey. Photo by Laura Perlick for the United States Fish and Wildlife Service (USFWS).
Some gardeners do not look beyond the word “weed” in a name before they reach for their hoe or a chemical plant killer. They are not independent thinkers, but ones who are locked into a binary view of the natural world, viewing everything as either good or bad. Try to explain to them that the inclusion of “weed” in a plant’s name can be merely a case of poor public relations. It’s worthwhile to get overly judgmental gardeners to stay their hand regarding these plants because they are often beneficial to butterflies, birds, and other wildlife, more so than a highly hybridized rose bush.
Other weeds, of course, do not have the word included in their name but have acquired it as a general type by reputation. For those weeds, gardeners and farmers have less tolerance and are apt to destroy them whenever encountered, though even those exist on a sliding scale. People are divided into several camps about Dandelions (Taraxacum spp.), for example, while they nearly universally abhor Palmer’s Pigweed (Amaranthus palmeri) and Lamb’s Quarters (Chenopodium berlandieri). Even those last two plants offer the feature of edibility, making them attractive on however limited a basis to at least some people and animals.
One important group of plants has acquired the name “weed”, and they are in the genus Cannabis, also known as Marijuana. Growers and users of the plant have called it “weed” and many other names besides for reasons of its outlaw, rebel status, as well as its diverse nature in checking off boxes from good to bad. Marijuana plants can spread readily on their own; mismanaged large scale cultivation, as opposed to the former practice of clandestinely maintaining relatively small plots, can have a negative impact on the environment; and for people the plant can range in usefulness from good to bad depending on the inclinations and prejudices of the person beholding it.
Paul Reubens as Pee-wee Herman performs “Surfin’ Bird”, a hit song for The Trashmen in 1963, in the 1987 movieBack to the Beach, with Frankie Avalon and Annette Funicello.
The word “weed” embraces many meanings, and means different things to different people depending on their tolerance level. To hear “weed” in a plant’s name and automatically seek to eradicate it from the garden is arbitrary and foolish. Better to take a more nuanced approach regarding the plants that don’t threaten to choke out every other plant in a garden plot. Some can be seen as friendlier than others regardless of being handicapped with a bad name. As for that other kind of “weed”, the kind some folks like to smoke, legally it’s gaining more widespread favor despite its outlaw name.
“Gardening is the handiest excuse for being a philosopher.” ― from Ray Bradbury’s 1957 novel Dandelion Wine.
There is no end to the availability of advice, how-to manuals, and chemical poisons to help gardeners rid their lawns and garden beds of crabgrass and dandelions, two weeds most prevalent in late spring and early summer. Are they weeds? Only the individual gardener can say. If the gardener lives under the watchful eyes of a homeowners’ association, the association will say.
A meadow full of dandelions in The Netherlands; photo by Alias 0591 from The Netherlands. A meadow full of crabgrass would not be nearly as beautiful.
The guidelines of Integrated Pest Management (IPM) state that a pest is what the gardener says it is, whether plant or animal, and that each gardener has a tolerance level for pests. Those with zero tolerance spend a fortune and a lot of time pouring poisons on crabgrass and dandelions in an effort to eradicate them. Have they been eradicated? Maybe on a few tiny patches of the planet which are now toxic spill zones.
Mow high! That’s the cry which often goes unheeded because some folks don’t like walking through tall grass. Mowing high really does help desirable grass compete with weeds like dandelion and crabgrass, however, and if the grass is kept healthy with applications of compost and lime, so much the better. The main thing is to keep bare spaces to a minimum, because those are the places where weeds can move in and start to take over. Keep the applications of synthetic fertilizers to a minimum, or do without the stuff altogether, because in the long term they contribute to soil toxicity.
What’s a conscientious, organic (or mostly so) gardener to do then in the good old summertime when there are patches of crabgrass and dandelions in the lawn? Well, if an hour’s worth of hand weeding once a week won’t take care of the situation, maybe that mostly organic gardener could consider turning some of that lawn on the property over to some other purpose, so that it’s more manageable. Either way, the situation calls for a more relaxed tolerance level, especially in the summer. A suggested tolerance level would be one that calls for lying in a hammock under a shade tree, drinking from a cool glass of dandelion wine, reading a good book (see above), and listening to the peaceful sound of the crabgrass growing.
Imagine going to the grocery store as usual and discovering after ingesting some of the food you brought home that it made you ill, weakened the immune system of some of your family, and killed others. You had no way of knowing what was about to happen, and if you want to eat you have no choice but to return to the same grocery store next week, taking your chances. There is no alternative. This is the situation for bees and other pollinators, whose grocery store consists of the flowers they have visited for thousands or millions of years. Massive die-offs of bees and butterflies have been in the news for many years now, and recently the U.S. Fish and Wildlife Service placed the yellow-faced bees of Hawaii on the Endangered Species List, the first bees to be included.
Sand bumblebee on red clover. Photo by Ivar Leidus.
Pollination of dandelion by a bee. Photo by Guérin Nicolas.
Use of broad spectrum pesticides in agriculture is partly responsible for the decline in bee populations, but an often overlooked contributing factor is the part homeowners play when they distribute similar pesticides on their lawns and gardens. Unlike the use of pesticides in agriculture which is done in the name of food production, homeowner use of pesticides is solely in the interest of aesthetics. Individuals can change this behavior more readily than they can the practices of large agricultural concerns.
Change starts in our own yards, and it starts with a change in perspective about what is acceptable and beautiful. Instead of insisting on a monoculture of grass in the lawn, change the definition of the lawn to include some flowering plants. Look on dandelions and clover as beneficial for the bees, rather than as weedy pests to be exterminated at whatever cost in time, money, energy, and collateral damage. An important aspect of Integrated Pest Management is tolerance of a certain amount of pest damage, however “pest” is defined, and the realization that perfection is neither attainable nor even desirable. Nature is messy. The bees prefer it that way, and will thank you for your part in letting it be. The hard part will be in convincing your neighbors of it while fluff from your dandelions drifts into their yards.