Can Chickens Eat Weeds? What You Need to Know

Trefoil Clover Weeds With Raindrops (image by auntmasako, Pixabay)

Article Summary

  • Chickens can eat many common yard and garden weeds like dandelions, clover, and plantain, which are not only safe but also provide nutritional benefits such as beta-carotene, calcium, and vitamin K.
  • While edible weeds are generally safe, there are potential risks such as toxicity, parasites, pesticides, choking hazards, imbalance in diet, and inedible parts.
  • Proper identification of weeds, harvesting from chemical-free areas, removing inedible parts, introducing new weeds gradually and in moderation, and access to fresh water are essential practices.

Foraging for sustenance is an innate behavior in chickens. Given the chance, they will peck and scratch at the ground in search of anything even remotely edible, including weeds. But just because chickens will eat weeds doesn’t necessarily mean they should.

Weeds come in all shapes and sizes, and some can provide nutritional benefits to chickens, while others may pose health risks if consumed. As a chicken owner, it’s important to understand which weeds are safe, which to avoid, and how to appropriately incorporate edible weeds into your flock’s diet.

Is it Safe for Chickens to Eat Weeds?

Whether or not it’s safe for chickens to eat weeds depends entirely on the type of weed in question. Many common yard and garden weeds like dandelions, plantain, chickweed, clover, and grass are fine and beneficial for chickens to eat. These weeds provide nutrients like beta-carotene, calcium, and vitamin K.

On the other hand, there are a number of potentially toxic weeds to keep chickens away from, including poison hemlock, pokeweed, milkweed, nightshade, and buttercup. If ingested, these weeds can cause illness, digestive upset, or even death. Knowing how to identify both edible and poisonous weeds is key.

When in doubt, it’s best to remove and discard unknown weeds rather than taking a chance and allowing chickens access. Stick to feeding weeds you can positively identify and know to be safe. Monitor your flock closely when introducing new weeds, as you would with any plant given to chickens, to watch for any adverse effects.

What are the Benefits of Feeding Weeds to Chickens?

Letting your flock forage on the right weeds can have some great benefits:

  • Nutrition: Many weeds are packed with essential vitamins, minerals, and antioxidants that can complement commercial feed. Dandelions offer calcium, plantain contains vitamin K, and purslane is high in omega-3s.
  • Variety: Chickens can get bored of the same old feed mix day after day. Providing weeds adds diversity to their diet and allows them to exhibit natural foraging behaviors.
  • Cost savings: Weeds are free to grow and abundant! Allowing chickens to graze weeds can reduce the amount you have to spend on feed.
  • Healthy gut: Certain weedy greens are high in fiber and prebiotics, which support good gut health and digestion in chickens.
  • Enrichment: Foraging gives chickens something productive to do while getting outdoors and exercising. This prevents boredom and aggression while satisfying natural instincts.
Foraging Jersey Giant Chickens
Free-Range Jersey Giant Chickens

As long as the weeds are safe for consumption, letting the flock nibble here and there provides nutritional, behavioral, and financial benefits.

Are there any Risks in Feeding Weeds to Chickens?

While edible weeds generally won’t cause harm, there are some potential risks to be aware of:

  • Toxicity: As mentioned, poisonous weeds can seriously sicken or kill chickens if ingested. Know which weeds in your area are unsafe.
  • Parasites: Weeds may harbor parasites like protozoa, intestinal worms, or external mites that can infest your flock if allowed access.
  • Pesticides: Avoid letting chickens forage in yards, lots, or areas that may have been chemically treated as residue that can linger on weeds.
  • Choking hazards: Some weeds have small hard seeds or thorns that could pose a choking risk if consumed.
  • Imbalance: Feeding too many weeds could lead to an unbalanced diet if chickens fill up on greens versus complete feed.
  • Inedible parts: Ensure chickens only eat leafy parts of weeds, not stems, flowers, or roots, which may be indigestible.

With some common sense precautions, the risks of feeding weeds are minimal compared to the benefits. Monitor your flock while introducing new weeds slowly and in moderation.

What Type of Weeds Can Chickens Eat?

Many broadleaf greens, legumes, and “lawn weeds” are perfectly edible for chickens. Some specific types of weeds chickens can eat include:

  • Dandelions: Full of vitamins A, B, C, and D, calcium, and antioxidants. The flowers, leaves, stems, and roots are all edible.
  • Chickweed: High in omega-6 fatty acids, niacin, riboflavin, and calcium. A favorite snack of many chickens.
  • Clover: Provides protein, minerals, and prebiotic fiber. Both red and white clover are safe.
  • Plantain: Rich source of vitamin K, calcium, and salicylic acid. It has natural antiseptic properties.
  • Grass: Fresh, tender grass provides beta carotene, vitamins K and E, and omega-3s.
  • Parsley: Highly nutritious herb that aids digestion and provides vitamins C, A, and K.
  • Lambsquarters: Leaves contain vitamin C, niacin, folate, calcium, and potassium.
  • Purslane: Succulent leaves are very high in omega-3s and antioxidants like beta carotene and vitamin C.
Lambsquarters in the Wild
Lambsquarters in the Wild

The above are just a few examples of weeds that provide excellent nutritional value and are perfectly safe for chickens to graze on.

Can Chickens Eat Any Weeds?

No, chickens absolutely should not eat any and all weeds indiscriminately. While many common weeds are edible, others are toxic or hazardous if consumed.

Alliums like wild onions or chives are very toxic to poultry. Allowing chickens access to poisonous plants like foxglove, nightshade, pokeweed, or milkweed could be lethal.

Wild onions or chives are very toxic to poultry, and even safe weeds may cause issues…

Even generally safe weeds may cause issues if they contain toxic compounds, pesticides, or harbor parasites. And weeds with thorns, burrs, or sharp awns can harm a chicken’s crop and digestive tract.

It’s critical to properly identify weeds and confirm edibility before allowing chickens access. Remove any weeds you cannot positively identify as safe and monitor foraging chickens closely for the first time introducing new weeds. Only permit chickens to eat weeds you know to be safe and non-toxic.

Can Chickens Eat Thistle Weeds?

While prickly, most thistle species, such as bull, milk, and Canada thistle, have edible leaves and flowers safe for chickens to eat. The spines should be removed from the leaves before feeding.

Avoid allowing chickens to consume musk or nodding thistle, as these contain toxic compounds that can cause liver damage. In general, the larger, taller thistles tend to be less safe compared to the shorter, bushier varieties.

A Musk Weed With Flowers (image by SanduStefan, Pixabay)
A Musk Weed With Flowers

Introduce thistle in moderation to start and look for any signs of reaction. The high fiber content may cause loose droppings at first. Thistle leaves offer vitamins A, C, and K and numerous minerals that make it a beneficial occasional treat.

Can Chickens Eat Horseweed?

Also called marestail or stickweed, horseweed is an abundant edible weed found in pastures and roadsides. Both the young leaves and mature seeds of horseweed plants are safe for chickens to consume.

In fact, horseweed is highly nutritious, providing protein, fiber, iron, calcium, manganese, magnesium, and zinc. It also has high levels of omega-3 fatty acids. The seeds, in particular, are a healthy addition to their diet.

This hardy perennial weed is safe for chickens and provides excellent nutrition. Let your flock forage on horseweed freely or collect and provide it as supplemental feed. They will readily devour both the leaves and seeds with gusto.

Can Chickens Eat Yard Weeds?

Backyard chickens kept in a yard or garden will naturally forage for weeds, bugs, and anything remotely edible they can find while pecking about. Many common yard weeds like dandelions, clover, plantain, and grass pose no risk and can be safely consumed.

However, it’s important to confirm your yard has not been treated with herbicides or other chemicals that could contaminate the weeds. Avoid allowing chickens to consume large amounts of grass clippings which can harbor yard chemicals.


Introduce yard weeding slowly and monitor for any abnormal reactions. Opt to collect weeds from your lawn and feed selectively until you know how your chickens tolerate them. Also, free-ranging in the yard is fine.

Can Chickens Eat Wild Weeds?

Weeds found growing wild, such as along roadsides, vacant lots, trails, waterways, and woodland edges, are generally safe for chickens to eat. However, it depends on the location.

Weeds found near dumped refuse, chemical plants, construction zones, highways, industrial areas, or railroad tracks may contain toxic levels of heavy metals, fertilizers, or other chemicals. These weeds should be avoided to prevent poisoning.

It’s safest to harvest wild weeds far from human activity, where soil contamination is unlikely. Remote meadows, overgrown fields, and nature preserve areas make for good wild weed foraging grounds, provided toxic plants are excluded.

When sourcing wild weeds, only collect far from roadways or developed areas. Also, identify each weed type before feeding to ensure it’s safe and edible. Introduce new wild weeds slowly while monitoring for any reaction.

How Much Weeds Can Chickens Eat?

Chickens can eat a moderate amount of weeds as part of a balanced diet. Good guidelines are:

  • Up to 20% of their daily diet can come from weeds.
  • Offer at least 1 packed cup of weeds per 3-4 chickens.
  • Introduce new weeds slowly at first to monitor effects.
  • Provide free-choice complete feed at all times as well.
  • Remove weeds once chickens lose interest; don’t let them decay.

Too much weed intake could lead to health issues, so weeds should not be the sold diet…

Too much weed intake could lead to diarrhea, nutritional imbalances, and other issues. Weeds should always complement their regular feed, not become the sole diet.

Ensure plenty of fresh water is available at all times, too, since chickens digest and utilize nutrients from weeds best when well hydrated.

How to Feed Weeds to Chickens?

Here are some tips for safely collecting and feeding weeds:

  • Identify weeds 100% before feeding. Remove any unknowns.
  • Harvest weeds from areas free of chemicals, car exhaust, etc.
  • Select young, leafy parts. Avoid stalks, seed heads, and flowers.
  • Remove spines, thorns, or stickers before feeding.
  • Rinse off dirt/debris; pat leaves dry before feeding.
  • Chop or tear large leaves into bite-sized pieces.
  • Place weeds in a clean dish or trough, or scatter them in a pen.
  • Refrigerate excess harvested weeds in a sealed bag for later.
A Closeup of Horseweed or Mare's Tail (image by gosiak1980, Pixabay)
A Closeup of Horseweed or Mare’s Tail

Always start by introducing just one new weed variety at a time. This allows you to gauge the chickens’ reaction and watch for potential health effects before offering more.

Weed consumption may dip after the initial curiosity and novelty wears off. That’s normal. Continue providing weeds consistently but limit portions to avoid waste.

How Often to Feed Weeds to Chickens?

For chickens that are free-range, daily access to forage on weeds is fine as they will self-regulate intake.

For confined chickens, offer harvested weeds 2-3 times per week. Since they eat eagerly at first, stay alert for bloating, diarrhea, or other issues. Reduce portions or frequency if problems arise.

Rotate weed varieties to add diversity. Chickens will nibble the tastiest weeds first. Remove wilted greens within a few hours to prevent spoilage or mold.

Aim to make weeds a supplemental treat, not the main course. Monitor body condition and egg production; increase commercial feed intake if declines are noted after introducing weeds.

Can Baby Chickens Eat Weeds?

Baby chicks under 4 weeks old should not be allowed to forage or consume weeds. Their immune systems are underdeveloped and weeds may harbor pathogens harmful to them.

Once chicks are fully feathered and 6-8 weeks old, you can offer small amounts of the safest, most nutritious weed varieties chopped finely. Good starter weeds include dandelion, clover, chickweed, plantain, grass, and parsley.

Chicks on The Grass (image by Lolame)
Chicks on The Grass

Introduce new weeds gradually as the chicks’ digestive systems continue to mature. Limit weed intake to no more than 10% of their diet; they need sufficient starter feed for proper growth.

Monitor chicks closely when weeds are present to ensure they are tolerating them well. By 16 weeks old, chicks can eat most weeds that are safe for adult chickens in moderation.

In summary, weeds can be a healthy supplemental food source for backyard chickens, provided they are edible varieties harvested safely. With some common sense precautions, letting your flock forage on weeds provides nutrition, enrichment, and free feed!

Frequently Asked Questions

Can Chickens Eat Weeds in the Garden?

Yes, chickens can safely consume many weeds found in gardens. Common garden weeds like dandelions, clover, and chickweed are generally safe and nutritious for chickens. However, it’s crucial to ensure that the plants haven’t been treated with pesticides or herbicides, as these chemicals can be harmful to chickens.

Can Chickens Eat Bindweed?

Chickens can eat bindweed in moderation. While bindweed is not toxic to chickens, it’s important to note that excessive consumption may cause digestive issues. Ensure that bindweed is offered as part of a varied diet and that it hasn’t been exposed to harmful chemicals.

Can Chickens Eat Horseweed?

Chickens can eat horseweed, also known as mare’s tail, in moderation. Horseweed is generally safe for chickens, but like any new food, introduce it gradually to monitor their response. Make sure the horseweed hasn’t been treated with pesticides or herbicides before offering it to your chickens.

Can Chickens Eat Thistle Weeds?

Chickens can eat thistle weeds, and in fact, many chicken keepers intentionally grow them for their nutritional benefits. Thistles are rich in vitamins and minerals that contribute to a balanced chicken diet. Remove any thistle plants that may have been sprayed with harmful chemicals before allowing chickens to consume them.