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Are Tares Toxic? Facts and Myths Debunked

Chloe Aug 05, 2026 2026-08-05 13:10:41

When discussing the tares, or darnel grass, many people wonder about their potential toxicity, given their appearance and relation to the notorious cocktail-party antipasto, the garlic bread. But are tares actually poisonous, and should we be wary of them in our gardens and on our dinner plates?

wheat and tares look very similar and it takes an experience eye to observe between them
wheat and tares look very similar and it takes an experience eye to observe between them

To shed light on this topic, let's delve into the world of tares, explore their relationship with wheat, and examine existing scientific research on their potential toxicity.

a poster with different types of flowers and leaves on it's sides, including the names
a poster with different types of flowers and leaves on it's sides, including the names

Tares and Wheat: Allies or Foes?

Tares, scientific name Vicia sativa, is a close relative of wheat (Triticum aestivum). Both belong to the grass family and have similarAppearance. However, they have stark differences that can put gardeners and farmers on their toes.

a cell phone with the text poison's used for medicine on it and an image of flowers
a cell phone with the text poison's used for medicine on it and an image of flowers

Tares are often considered a noxious weed due to their aggressive growth and ability to outcompete valuable crops. Their similarity to wheat, particularly during the early stages of growth, has led to confusion and mechanical harvesting of tares mixed with wheat, resulting in unacceptable contamination in flour and baked goods.

The Similarity to Wheat: A Blessing or a Curse?

Witchy Garden
Witchy Garden

Tares' resemblance to wheat has fooled humans and animals alike for centuries. However, this similarity has been a significant concern for the food industry, leading to stringent regulations on tares in grains and flour. In some places, tares are illegal in agricultural settings due to the ease with which they infiltrate wheat fields.

With such a strong connection to wheat, it's natural to wonder whether tares share any of the same nutritional or toxic properties. Let's explore this in the following section.

Tares in the Kitchen: Safe or Sacrilege?

Parables of the tares and wheat :: An enemy sows poisonous weeds in a wheat field (Matthew 13:24-30)
Parables of the tares and wheat :: An enemy sows poisonous weeds in a wheat field (Matthew 13:24-30)

While tares are not typically used in mainstream recipes, some culinary adventurers have ventured into the world of tares, experimenting with them as a less conventional flour source. But what does the science say about consuming tares?

Scientific research on tares' edibility is surprisingly scarce, likely due to their low economic value and widespread classification as a weed. However, some studies hint at potential antibacterial and antioxidant properties in tares, suggesting they might have nutritional benefits. Unfortunately, these findings are not conclusive, and little is known about the effects of tares on human health.

Tares and Toxicity: Myth or Reality?

the menu for poisonous plants is on display
the menu for poisonous plants is on display

Despite the lack of scientific consensus on the edibility of tares, some reports suggest that they may be toxic. The confusion likely arises from their association with ergot, a fungus that can grow on both tares and wheat, causing potentially harmful effects.

Ergot contains specific alkaloids that can lead to a condition called ergotism, characterized by severe nervous system and blood vessel problems. symptoms include muscle pains, nausea, and, in severe cases, gangrene and death. However, these symptoms are not directly linked to tares themselves but rather to the fungus growing on them.

the top ten most popular plants
the top ten most popular plants
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the cover of a book with purple flowers hanging from it's sides and green leaves on
the cover of a book with purple flowers hanging from it's sides and green leaves on
Plants knowledge learning charts facts education information poison
Plants knowledge learning charts facts education information poison
a poster showing the different types of leaves and plants that are growing on trees in the forest
a poster showing the different types of leaves and plants that are growing on trees in the forest

The Ergot-Tare Connection

Ergot baskets, as they're often called, can attach to tares and other grasses, feeding off the plant matter. Consuming infected grain can lead to the dangers of ergotism. However, this is a problem with the fungus, not the tares themselves. Moreover, proper cleaning and storage practices can minimize the risk of ergot contamination in grains.

Some people believe that tares are toxic solely based on their association with ergot. However, without conclusive scientific evidence, it's unsafe to label tares as poisonous without context. While you should be cautious around tares due to their potential association with ergot, it's essential to understand that the plant itself is unlikely to cause harm.

Tares and Allergies: A Hidden Concern?

As with any plant, tares could potentially cause allergic reactions in sensitive individuals. However, no widespread allergies to tares have been reported in scientific literature. People with known grass allergies might be at a higher risk, but further research is needed to draw definitive conclusions.

Until more is known about tares' potential allergy-inducing properties, those with grass allergies should exercise caution when handling tares.

In gardens and farms, it's best to control tares to protect crops from competition and contamination. In the kitchen, while tares' edibility is still debated, their use should be approached with caution, especially where ergot contamination is a concern. As our understanding of tares grows, so too will our ability to harness them in both agricultural and culinary settings. Until then, tread carefully and remain informed.