Watermelon peperomia

Peperomia argyreia

In other languages: Peperomia (Nederlands) · Peperomia pastèque (Français)

The watermelon peperomia comes from tropical South America, where it grows in the shade of the rainforest. It is a compact houseplant with round, fleshy leaves on red stalks, banded in silvery grey and dark green in a pattern that recalls the rind of a watermelon. The plant forms a small, rounded clump 20–25 cm tall. Growers like it because it stays small, needs little water and is easy to propagate. It fits on a narrow windowsill, a desk or a plant shelf.

Updated on 9 October 2026

Light
Partial shade
no harsh midday sun
Moisture
Dry to normal
no wet feet
Legal basis
Potting soil
Hardiness
Houseplant
min. 12 °C
Size
0.25 m
tall, 0.3 m wide

Key facts
Height	0.25 m
Poisonous to people and pets	Not known to be poisonous

Identify

Watermelon peperomia: how do you recognise it?

Habit: Compact, rounded clump without a stem, 20–25 cm tall and up to 30 cm wide.
Leaves: Round to oval, 5–10 cm, thick and fleshy, banded in silvery grey and dark green; the stalk is attached near the centre of the leaf.
Leaf stalk: Red, fleshy and rather brittle: it snaps easily.
Flower: Narrow, greenish spikes like little mouse tails; inconspicuous.
Roots: Fine and shallow: a small pot is enough.

Plants: March–April

In your garden

Why grow it?

Exceptionally patterned leaves that stay attractive all year.
Stays small and compact: ideal for a desk, a narrow windowsill or a plant shelf.
Needs little water thanks to its fleshy leaves.
Tolerates a spot without direct sun.
A single leaf is enough to grow a new plant.

Watermelon peperomia: where does it grow best?

Bright light to partial shade out of direct midday sun: strong light bleaches the pattern, too little light makes the stalks long and floppy.
Room temperature, 18–24 °C; never below 12 °C and no draughts.
Ordinary room air is fine; slightly more humid air helps when the heating is on.
An east- or north-facing window, or a spot a little way back from a south-facing one.

Light: Bright, out of direct sun
Potting soil: Multi-purpose compost or airy, humus-rich compost
Acidity: Acid or neutral
Watering: Sparingly or moderately
Size: 0.25 m tall, 0.3 m wide
Temperature: Minimum 12 °C

Goes well with

Other peperomias: Species with puckered, red or small leaves make a fine collection together.
Nerve plant: Low, patterned leaves for the same spot out of fierce sun.
Chinese money plant: Round leaves of a different shape, for the same bright spot.
Hoya: A trailing plant above the compact clump, with the same sparing watering.

Maintenance

Watermelon peperomia: when and how to plant it?

Plant in March–April.

Repot in March–April, only when the pot is full of roots: every 2–3 years.
Choose a small, shallow pot, only slightly larger than the old one, with a drainage hole.
Use light potting compost mixed with a third perlite or fine bark.
Set the plant at the same depth as before: the leaf stalks must not disappear below the compost.
Water moderately, then empty the saucer.

Care

Water: Let the compost dry out between waterings, until the top 2–3 cm feels dry. Better too little than too much: the fleshy leaves store water.
Feeding: From April to September, houseplant feed at half strength once a month.
Humidity: Ordinary room air is enough; do not put it right next to a radiator.
Leaves: Wipe off dust with a soft, slightly damp cloth; be careful, as the stalks break easily.
Turning: Turn the pot now and then so the clump stays nicely rounded.

Tip: The fleshy leaves need little water: let the compost dry out between waterings. For a new plant, push a leaf with a piece of stalk halfway into moist cutting compost.

Watermelon peperomia: when to prune it?

When: Pruning is not needed. Just cut off old or damaged leaves, at any time of year.

How:

Cut an old or damaged leaf off at the base of its stalk.
Remove the inconspicuous flower spikes if you do not like them.
Use any healthy leaf you remove straight away as a cutting.

Pruning calendar and basic rules

Propagation

Leaf cuttings: From April to August, cut off a healthy leaf with a piece of stalk, or cut a leaf in half across, and push it halfway into moist cutting compost. At 20–24 °C, under plastic or a glass, small roots appear after a few weeks, followed by new plantlets.
Division: When repotting in March–April, you can carefully divide a large clump into pieces with their own roots.

Watermelon peperomia: how does it get through the winter?

Indoors all year: it does not tolerate cold and suffers below 12 °C.
Water even less in winter and do not feed.
Keep it in a bright spot, away from cold windows, draughts and hot radiators.

Diseases and pests

Stem rot: Soft, black leaf stalks at the base from too much water. Water less; take the healthy leaves as cuttings if the base has rotted.
Leaf drop: Leaves fall because of cold, draughts or compost that is too wet. Move it somewhere warmer and let the compost dry out.
Long, floppy stalks: Too little light. Move it somewhere brighter, but out of fierce sun.
Mealybug: White fluffy tufts at the base of the leaf stalks. Remove with a cotton bud dipped in a little alcohol.
Faded pattern: Too much sun; the leaves can also get brown scorch marks. Move it out of direct sun.

Through the year

January: Little water, no feeding.
March: Repot if the pot is full of roots.
April: Repot or divide. Start feeding monthly again. Take leaf cuttings.
May: Feed. Take leaf cuttings.
June: Feed. Keep out of fierce midday sun.
July: Feed. Only water when the top layer is dry.
August: Feed. Take the last leaf cuttings.
September: Last feed of the year.
October: Water less.
December: Little water. Away from cold windows.

You and this species

Did you know?

Peperomia belongs to the pepper family, like the black pepper in your kitchen; the name means ‘resembling pepper’.
The leaf is peltate: the stalk is not attached at the edge, but near the centre of the leaf.
A single leaf cut in half across can give you two new plants.

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