Plant Care Canadian Horseweed

Canadian Horseweed

About Canadian Horseweed

Canadian Horseweed is a relatively rare houseplant 🌿 that is a fun challenge to grow and needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Canadian Horseweed likes soil that is well draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Canadian Horseweed belongs to the erigeron genus, and is native to the Americas.

⚠️ Canadian Horseweed is not safe to consume. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian. If you have children, cats, or dogs in the home, we suggest keeping this plant out of reach.


Erigeron canadensis

Also known as

Butterweed, Colstail and Marestail

How to care for Canadian Horseweed


How often to water your Canadian Horseweed

Water needs for Canadian Horseweed
0.5 cups
every 9

Canadian Horseweed needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Canadian Horseweed

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Canadian Horseweed in your home

Light needs and placement for plant Canadian Horseweed: 1ft from a window
1ft or less from
a window

Canadian Horseweed love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Canadian Horseweed does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Canadian Horseweed in your home 🏡.


How to fertilize Canadian Horseweed

Nutrient, fertilizer, and repotting needs for Canadian Horseweed: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Canadian Horseweed after it doubles in size or once a year—whichever comes first.

Difficulty Level

Canadian Horseweed can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!

Water Needs
Sunlight Needs

Care Summary for Canadian Horseweed

Canadian Horseweed

Canadian Horseweed

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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