Chinese Money Plant
Pilea peperomioides · the Pass-It-On Plant
It grows on shady, damp rocks high in the mountains of southwest China. For decades you could not buy it: it spread hand to hand as cuttings among hobbyists, long before nurseries ever stocked it.
Family
Urticaceae
Origin
Southwest China
Spread by friends
Before nurseries
Indoors
About 30 cm
Growth
Moderate
With pets
Safe
Where it's from
Southwest Sichuan and west Yunnan, China
High mountain rock
Shady, damp forest rocks at roughly 1,500 to 3,000 m in Sichuan and Yunnan.
Outdoors: zones 10–11
Frost-tender. Elsewhere a container plant that must come in before cold.
Barely catalogued in the wild
A small native range, famously rare and poorly documented for most of the 20th century.
You had to know someone
Norwegian missionary Agnar Espegren carried cuttings home via India in 1946, and the plant spread person to person as pups across Scandinavia long before it appeared in nurseries. You literally had to know someone to own one. Hence the pass-it-on plant.
It self-propagates
It throws pups from the base and underground rhizomes that root in water or soil.
Tissue culture broke the bottleneck
It is mass-produced now, but the friendship-plant story is why it is loved.
Peltate leaves
The stalk joins near the centre of the disc, the UFO and pancake look.
How to keep it
LightBright, indirect
A short distance from a window. Direct sun scorches the discs. Rotate it, as it leans hard toward light.
WaterKeep evenly moist
Let the top of the soil dry between waterings. It resents stale, soggy, compacted soil.
HumidityAverage is fineAppreciates 50 percent or more but is not fussy about ordinary room air.
Temperature16–24°CKeep above about 13°C. Frost-tender, though hardened plants have taken brief cold.
SoilFree-draining mixA standard mix that does not stay waterlogged.
FeedingDiluted, in growthA balanced feed at half strength during the growing season only.
DifficultyEasyForgiving of occasional neglect. Drooping leaves usually just mean a drink is overdue.
With petsSafeNon-toxic to cats and dogs per the ASPCA. No saponins or calcium oxalate. One of the safer choices.
PropagationPups and offsetsDetach the offsets from the base and stem and pot them up. They root in water or soil.
RepottingEvery 1–2 yearsOr when the pups crowd the pot.
What the data says
What it costs
Plain green plants are cheap now that tissue culture broke the you-can-only-get-one-from-a-friend bottleneck.
$10–30
Variegated cultivars like White Splash, Mojito and Sugar run $20 to $30 and up for small pots. Collector premiums, but nowhere near the variegated-Monstera bubble.
The clean-air myth
It carries no air-cleaning credentials, and the famous number behind that whole idea is unforgiving.
1 Pilea cleans 0.1% of one room's air
It was not even a NASA study plant. That 1989 result came from a sealed box, and in a real room you would need hundreds to rival opening a window. Keep it because it is charming, pet-safe and easy to share.
IUCN · Not assessed
In the wild
One of the most-shared houseplants on earth, with almost no formal conservation record.
Abundant on windowsills, yet restricted to a small montane range in southwest China and never formally assessed on the Red List. For most of the 20th century it was rare and poorly documented in the wild even as it spread through homes.
When it sulks
Drooping, curling leavesUsually underwatering, and it often recovers after a drink. Soggy roots can do the same.
Leaning, lopsided plantStrong phototropism. Rotate the pot regularly.
Yellowing lower leavesOverwatering and poor drainage, or simply old leaves ageing out.
White crusty spots under leavesNormal mineral excretion, called cystoliths. Not a pest.
Pale, leggy growthToo little light.
Varieties & company
The varieties
Plain greenWhite SplashMojitoSugar
Pairs with · keep apart from
PeperomiaCalatheaFernsSnake PlantCactiSucculents
A new plant, every week.
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