Last updated: June 7, 2022

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Horseweed is a common name for several species of plants in the genus Conyza. The most troublesome are C. arvensis (field horseweed) and C. canadensis (Canada field-horsenettle). These weeds have been spreading across North America since they were introduced from Europe as an ornamental plant in the early 1800s, but it was not until recently that their invasiveness has become widely recognized by land managers and homeowners alike.

Horseweed: Bestsellers and current offers in the UK

The best horseweed in the UK: Our selection

Horseweed: Frequently asked questions

What types of Horseweed are there and what determines a good product?

There are two types of horseweed. One is called giant ragweed, and the other one is common ragweed (Ambrosia artemisiifolia). Giant Ragweed can grow up to 8 feet tall with a stem diameter over 1 inch in diameter. The leaves on this plant have jagged edges that look like they were cut by scissors or razor blades. Common Horseweeds tend to be shorter than their cousin, but still reach 5-6 feet tall with stems about 3/4 inches in diameter at maturity. Both plants produce large amounts of pollen during late summer into fall which causes allergic reactions for many people who suffer from hay fever symptoms such as sneezing, itchy eyes and runny nose when exposed to them.

A good Horseweed has a high THC content, is easy to grow and can be harvested several times per year. The plant should also have few side effects on the consumer when smoked or ingested.

Who should use a Horseweed?

Anyone who wants to improve the appearance of their skin. Horseweed is especially good for those with oily, acne prone or sensitive skin as it helps balance oil production and reduce inflammation. It's also great for mature and sun damaged skins because it contains a high amount of antioxidants which help protect against free radical damage that can cause premature aging.

Based on what criteria should you buy a Horseweed?

Buy a Horseweed if you can find one. They are not common in the trade and they don't grow well from seed, so it's unlikely that you'll be able to get your hands on one unless someone gives or sells it to you. If given the choice between buying an established plant or taking home some seeds for free, go with the seeds every time.

The Horseweed is a very common weed that can be found in most of the gardens. It has been known to cause allergies and skin irritation if touched or rubbed against it, so you need to make sure that your horse doesn’t eat this plant as well. You should also keep an eye out for any signs of allergy on your horses when they are around these plants.

What are the advantages and disadvantages of a Horseweed?


The advantages of a Horseweed are that it is very easy to grow, and the leaves can be eaten raw or cooked. It has been used as an edible plant for centuries by many different cultures around the world.


They are very invasive. If you plant one, it will take over your garden and spread to other areas of the yard. The seeds can travel in water or on animals so be careful where you allow them to grow.

Shopping Guide: Everything you need to know

Which brands and manufacturers are represented in our review?

In our review, we present products from various manufacturers and suppliers. The list includes products from the following brands and manufacturers, among others:

  • Ultrey Seed House

What is the price range of the featured products?

The cheapest Horseweed in our review costs around 1 pounds and is ideal for customers who are conscious about their money. However, those who are willing to spend more money for better quality can also spend around 300 pounds for one of the more expensive products.