Stinging Nettle (l), a perennial weed and a dandelion flower which has gone to seed (r)

No garden is without weeds. A weed is simply any plant that is growing and unwanted; for example, grass in the lawn is lovely but grass in the garden bed is a weed. Sometimes seeds from wanted plants will spread and the seedlings will appear elsewhere in the garden and become weeds. Plants are sometimes dubbed “garden volunteers” instead of “weeds” if they happen to be a welcomed surprise.

Annual weeds
Consider weeds as you would any other plant. Annual weeds have a life cycle of a year or less. Some annual weeds include crabgrass, common chickweed, lamb’s quarters, common ragweed, prostrate knotweed, purslane, henbit, and prickly lettuce. One way to control the spread of these annual weeds is by hand-pulling and cultivation. Another effective technique is the use of a pre-emergent herbicide like Preen®. Pre-emergent herbicides interrupt seed germination by keeping seedlings from emerging and growing. Crabgrass control, a commonly used pre-emergent, is applied in the spring because crabgrass germination is related to soil temperature. When using pre-emergents, besides reading and following the directions, it is important to not break the garden’s surface by pulling other weeds and to not plant anything else in the area that has been treated with the pre-emergent.

Biennial weeds
As opposed to annual weeds, biennial weeds grow roots and basal rosette leaves the first year, then flower and set seeds in the second year. This list includes wild carrot, wild parsnip, teasel, and common burdock. In the first year when they have only leaves, these weeds look rather interesting, but they must be removed from the garden before they flower and set seed. These can be pulled or hoed away or can be controlled with a pre-emergent or post-emergent herbicide. Post-emergent herbicides can be chemical products such as Roundup® or an environmentally safe, non-chemical like vinegar, and are applied to kill the weeds after they are up and growing. There are two types of post-emergent herbicides, selective and non-selective. The selective post-emergent, as the name indicates, only affects specific weeds, so consult the label to determine if it will control broad leaf plants (seen most of the time for the lawn) or grasses. Be cautious because broad leaf herbicides can severely damage wanted plants such as perennials, trees, and shrubs. A non-selective, post-emergent herbicide will kill all kinds of plants, both the wanted and the unwanted-only you, the applicator, can tell the difference. Always read and follow the label directions.

Perennial weeds
Perennial weeds are the toughest to get rid of as they can spread four different ways: seeds, stem cuttings, roots, and spreading stolons. The plant itself is there year after year, growing bigger and spreading. Perennial weeds include yellow nutsedge, Johnson grass, wild garlic, dandelions, stinging nettle, red sorrel, broadleaf dock, common pokeweed, ground ivy, and Canada thistle. Poison ivy is also lumped into this category, but due to the woody vine stem is also considered a woody perennial weed. Perennial weeds live for more than two years. They are best controlled by non-selective herbicides, including vinegar. For best control, spray in the spring when plants are young and tender or in the fall when plants are building up a food store in the roots for the winter. On extremely tough problematic weeds like thistles and poison ivy, it would be advisable to spray them weekly as each spray weakens the plant more until finally it dies.

Weed Suppression Alternatives
Organic mulch eliminates weeds without the use of chemicals while adding organic material to the soil. Mulch blocks weeds’ access to light and air, slowing their growth. Newspaper can also be used. First place a few layers down and then cover the paper with a two-inch layer of mulch. The newspaper not only suppresses the weeds but permits water to enter the soil, and eventually decomposes-another green alternative. Black plastic should only be used for a couple of months because though it smothers the weeds underneath, it doesn’t allow the soil to properly exchange moisture and air. Landscape fabric also stifles weeds, but allows water to be absorbed into the soil and is a more green option. Be aware that after a number of years weeds will be able to root into the decomposing top layer of mulch.

Pulling weeds in the garden, another environmentally friendly method, can actually be meditative. You can listen to the sounds of the garden, be it the birds, bees, the plants, or the neighborhood, and reconnect with the earth, thereby gaining a better understanding of your garden. After a couple of weeks the weeds become fewer and the garden becomes more beautiful. Remember to pull the weeds before they go to seed and not to get discouraged. Don’t let them win! Be vigilant with garden care, and in the end you will succeed.

Barbara Arnold is green corps coordinator at Franklin Park Conservatory.

How much vinegar?

From Barbara Arnold
I have found the best way is to use straight vinegar, with a bit of dish soap added.
The ratio is 1 gallon of vinegar to 2 tablespoons of soap.  Put the mix into a spray bottle and use.

Be careful as this is a nonselective herbicide and will kill any plant it touches (just like Round-up).

New and beginning farmers
My first recommendation in your journey is to start out with a local farming friend or mentor along with joining an organization like Ohio Farm Bureau.
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Greg McGlinch

Darke County Farm Bureau

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We’re just so thankful for the Farm Bureau and the foundation for helping put this together. And of course, the Boyert family for the vision they had with this grant. It’s jumping us forward 10 years. It’s unbelievable.
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Nathan and Jill Parriman

Clermont County Farm Bureau

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Gretchan Francis

Trumbull County Farm Bureau

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Wyatt Morrow

Clinton County Farm Bureau

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The issue of property taxation remains as one of the biggest challenges our members face today. Ensuring agricultural property is valued for its agricultural potential and not development is critical to the continued success of Ohio agriculture.
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Matt Aultman

Darke County Farm Bureau

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Through the Select Partner program, we became educated in farm insurance and weren't just selling policies. It became more and more clear why farmers need an advocate like Ohio Farm Bureau.
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Chad Ruhl

Farm manager, CSI Insurance

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So many of the issues that OFBF and its members are advocating for are important to all Ohioans. I look at OFBF as an agricultural watchdog advocating for farmers and rural communities across Ohio.
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Mary Smallsreed

Trumbull County Farm Bureau

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