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Grow Like a Weed

Grow Like a Weed.

English
idiom

To grow very fast.

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What it means...

To grow very quickly and noticeably, especially used for children but also for businesses or anything expanding at a rapid pace.

When something grows like a weed, it increases in size or scale so fast it seems almost uncontrollable.

It is used affectionately for children or admiringly for fast-growing organizations.

Use it when…

  • When a child has noticeably grown taller very quickly over a short period
  • When a business or startup is expanding at an unexpected and rapid rate
  • When something — an idea, community, or movement — is spreading faster than anticipated

Don’t confuse with...

Wrong icon

"Mushroom"

To grow or expand suddenly and rapidly, especially used for cities or organizations

Wrong icon

"Snowball"

To grow gradually but with increasing speed and momentum as more elements are added

Correct icon

"Grow Like a Weed"

Growing very quickly and noticeably in a short amount of time

Where you’ll hear it

You’ll hear the "Grow Like a Weed" idiom in real life — at work, in relationships, or in the media.

Work & Business

Family

A grandparent says the grandchildren are growing like weeds every time she sees them.

Relationships & Social Life

Meetings

A founder tells investors the user base is growing like a weed — up 300% in six months.

Media & Everyday Life

Interviews

A CEO says the company grew like a weed in its first two years and they had to hire very fast to keep up.

Use it like this

Here’s how to use "Grow Like a Weed" idiom naturally in real conversations, with real examples.

Work & Business

Talking to Colleague

Colleague

How is the new product performing — any early signals?

You

It's growing like a weed — we hit our three-month target in the first three weeks.

Relationships

Casual Chats

Friend

I saw your nephew last weekend — he's so big now.

You

I know — he's growing like a weed. He was wearing kids' sizes three months ago.

Everyday Conversations

Storytelling

Friend

When did your community group get so large?

You

It grew like a weed after we went online — we went from 20 to 2,000 in about a month.

Last updated:
April 20, 2026

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