🌸 OrchidLog

How often should you water orchids?

The honest answer is that there is no single number — and chasing one is how most orchids end up rotting or shrivelling. Watering frequency depends on the genus, the potting medium, the pot type, the temperature and the humidity in your home. The better question is not "how often" but "how do I know when this plant is ready?" Below is a sensible starting point, followed by the signals that should override any schedule.

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Typical intervals by type

These ranges assume a healthy plant in fresh bark, in a typical indoor home. Treat them as a place to begin, not a rule.

Orchid	Interval (growing season)	Notes
Phalaenopsis	every 7–10 days	Let bark approach dry; never leave in standing water.
Cattleya	every 7–12 days	Wants a real dry-out between drinks.
Dendrobium	every 5–9 days	Many types take a much drier winter rest.
Oncidium	every 5–7 days	Fine roots dislike staying bone-dry.
Paphiopedilum	every 5–7 days	No pseudobulbs — keep evenly moist.
Vanda (basket)	daily–every 2 days	Bare roots dry fast; soak or mist.

What changes the interval

Medium: chunky bark dries far faster than sphagnum moss or a closed plastic pot.
Pot type: terracotta and slotted clear pots breathe and dry quickly; glazed ceramic holds water.
Season: plants drink heavily in warm, bright months and very little in cool, dim winter — the same plant might want water twice as often in July as in January.
Heating and air-conditioning: dry indoor air speeds evaporation and shortens the interval.

The reliable test: check the roots and medium, not the calendar. Silvery, wrinkled roots and bone-dry bark mean it is time. Plump, green roots and damp medium mean wait. A wooden skewer pushed into the pot will come out cool and dark when there is still moisture deeper down.

Signs you are over- or under-watering

Overwatering is the more common killer. Watch for soft, brown or mushy roots, yellowing lower leaves, a sour smell from the pot, and a medium that stays wet for over a week. Underwatering shows as deeply wrinkled, limp leaves, roots that stay silvery and shrivelled even a day after watering, and buds that dry and drop. When in doubt, lean slightly dry — orchids recover from thirst far more readily than from rot.

Because the right interval drifts with the seasons and differs for every plant, the surest way to dial it in is to record each watering and watch your own pattern emerge over a few weeks.

Log your waterings and learn your plants →