Stromanthe (Stromanthe sanguinea) care

Prayer plants · fussy to keep

Stromanthe (Stromanthe sanguinea) wants bright indirect light — the pink needs more than a calathea does. Water it every 5 days. Keep evenly damp — never soggy, never dry — and use rainwater or filtered water if you can. Tap water is the most common cause of the brown edges this family is famous for. Pot it in peat-free compost with perlite, moisture-retentive but not heavy. A balanced feed at quarter to half strength monthly in spring and summer. They are sensitive to over-feeding, and repot once a year. Humidity: above 60%. Below that, the edges brown and it will not stop. Non-toxic to cats and dogs — the whole family is safe, which is much of their appeal.

Almost always sold as 'Triostar': leaves splashed in cream, green and white on top and a solid shocking pink underneath, so the plant flashes pink whenever it moves. It needs more light than a calathea to hold that variegation, and the same humidity.

Quick facts

Water: Water every 5 days. Keep evenly damp — never soggy, never dry — and use rainwater or filtered water if you can. Tap water is the most common cause of the brown edges this family is famous for.
Light: Bright indirect light — the pink needs more than a calathea does.
Humidity: Above 60%. Below that, the edges brown and it will not stop.
Soil: Peat-free compost with perlite, moisture-retentive but not heavy.
Feeding: A balanced feed at quarter to half strength monthly in spring and summer. They are sensitive to over-feeding.
Repotting: Repot once a year.
Toxic to pets: Non-toxic to cats and dogs — the whole family is safe, which is much of their appeal.
Difficulty: Fussy.
Mature size: 50–80 cm tall.
Native to: Brazil.

Watering a Stromanthe

Water every 5 days. Keep evenly damp — never soggy, never dry — and use rainwater or filtered water if you can. Tap water is the most common cause of the brown edges this family is famous for.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Medium indirect light. Prayer plants grow on a forest floor and direct sun bleaches the pattern out of them within days. They are one of the few genuinely good plants for a north-facing room.

Humidity and temperature

Above 60%. Below that, the edges brown and it will not stop. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

A light, moisture-retentive mix — compost with perlite and a little bark. The roots are fine and shallow, so a wide shallow pot beats a deep one.

Feeding

A balanced feed at quarter to half strength monthly in spring and summer. They are sensitive to over-feeding. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot once a year. Every spring, into a shallow pot. Divide the clump at the same time if it has spread.

Common problems

Brown crispy edges on every leaf
Dry air, or minerals in tap water. Usually both.

Fix: Get the humidity above 60% and switch to rainwater or filtered water. Existing damage will not heal.
Leaves curling inward
Thirsty, or the air is too dry.

Fix: Water and raise the humidity; the leaves uncurl within a day if that was it.
Leaves staying folded up all day
Stress — too dry, too cold, or too dark.

Fix: The folding is normal at night. All day means something is wrong: check water, warmth and light in that order.
Fine webbing under the leaves
Spider mites, which love this family.

Fix: Shower the plant and treat weekly for a month; raise the humidity or they return.

Propagation

Divide the clump at repotting, giving each piece roots and several leaves. Stem cuttings with a node also root in water.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Non-toxic to cats and dogs — the whole family is safe, which is much of their appeal.

Named cultivars and variegations

Stromanthe sanguinea is sold under several cultivar names. Care is the same unless noted; variegated forms carry less chlorophyll, so they grow more slowly and want more light than the plain species.

Cultivar	Also sold as	Water
'Triostar'	Triostar, Tricolor stromanthe	every 5 days

Questions people ask

How often should you water a Stromanthe?

Water every 5 days as a starting point — that is the cadence PlantParlour sets for Stromanthe sanguinea. Keep evenly damp — never soggy, never dry — and use rainwater or filtered water if you can. Tap water is the most common cause of the brown edges this family is famous for. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does a Stromanthe need?