Plant Care Blue Billygoat Weed

Blue Billygoat Weed

5.0 out of 5 (1 experiences)

Blue Billygoat Weed has a Fast grower plant personality Fast grower
Blue Billygoat Weed has a Blooms easily plant personality Blooms easily

About Blue Billygoat Weed

Belonging to the family Asteraceae, this is a frost-tender annual to 1/2-1' tall with clusters of fluffy, aster-like flowers blooming from May to October. It is moderately drought tolerance but prefers rich, moist, well-drained soil and full sun. The plant is seldom damaged by rabbits and deer.


Ageratum houstonianum

Also known as

Flossflower, Bluemink, Blueweed, Pussy foot and Mexican paintbrush

How to care for Blue Billygoat Weed


How often to water your Blue Billygoat Weed

Water needs for Blue Billygoat Weed
0.5 cups
every 9

Blue Billygoat Weed 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 Blue Billygoat Weed

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 Blue Billygoat Weed in your home

Light needs and placement for plant Blue Billygoat Weed: 1ft from a window
1ft or less from
a window

Blue Billygoat Weed love being close to bright, sunny windows 😎.

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

Blue Billygoat Weed does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Blue Billygoat Weed in your home 🏡.


How to fertilize Blue Billygoat Weed

Nutrient, fertilizer, and repotting needs for Blue Billygoat Weed: 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 Blue Billygoat Weed after it doubles in size or once a year—whichever comes first.

Difficulty Level

Blue Billygoat Weed is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!

Water Needs
Sunlight Needs
Growing Outdoors

Care Summary for Blue Billygoat Weed

Blue Billygoat Weed

Blue Billygoat Weed

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.

What other plant parents say

Blue Billygoat Weed has a Fast grower plant personality Fast grower 1
Blue Billygoat Weed has a Blooms easily plant personality Blooms easily 1
@lexie.h36 avatar
leaf-1 21 Plants
xp 1,507 XP

I hav absolutely zero complaints! This plant is perfect, it grows so quickly and the flowers are so pretty!

Fast grower Fast grower
Blooms easily Blooms easily

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