over 2.6 million uses
About how many times has the hashtag #plantmom been used on social media?
The 'plant parent' identity became a genuine online community during the houseplant boom.
Source: Vox (2021) en.wikipedia.org
Nature · Guess the stat
How well do you know plants?
Guess the real numbers behind plants, see how everyone else guessed, and get the source.
Guess the statOne tap · see how everyone guessed
By how much can houseplants reduce indoor carbon dioxide levels in normal room settings?
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Daily #40Resets at midnight UTC
Today's round
- 4 stats to guess
- 1 opinion poll
- 0 played today
Guess, see the crowd, get the real number. One ranked attempt per day.
Plant by the numbers
Real figures with their sources. All Plant facts →
about 80%
About what share of Earth's total biomass is made up of plants?
That works out to roughly 450 gigatonnes of carbon locked up in plant life, far more than animals or humans.
Source: Bar-On et al., PNAS (2018) en.wikipedia.org
about 85–90%
About what share of all known plant species are flowering plants?
Flowering plants (angiosperms) dominate the plant kingdom, vastly outnumbering ferns, mosses and conifers.
Source: World Flora Online (2023) en.wikipedia.org
What people think about plants — houseplants and the plant kingdom
Vote to see the live results. All polls →
What's your favorite kind of houseplant?
Why do you keep plants at home?
Biggest plant-parent struggle?
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Questions
How does PlantSurvey.com work?
Each question asks you to guess a real number about plants — houseplants and the plant kingdom. After you answer you see how everyone else guessed, then the real figure and where it comes from.
How is the daily round scored?
Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.
Where do the numbers come from?
Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.
Is it free?
Yes. Playing, streaks, badges and leaderboards are free, and your votes stay anonymous.