Potting an orchid in regular potting soil, because that’s what every other plant on the shelf is sitting in, is close to the fastest way to kill one: within a couple of months the roots can rot away almost entirely. Orchids aren’t like the rest of this guide series, they grow attached to tree bark in the wild rather than rooted in soil, and treating them like a normal houseplant doesn’t work.
Light
Bright, indirect light works best, an east-facing window is often ideal. Too little light means the plant survives but rarely reblooms, while direct sun, especially through south or west windows, can scorch the leaves. Healthy leaf color is a decent light indicator, medium green suggests good light, dark green often means too little, and reddish or yellowish leaves can mean too much.
Watering
Water thoroughly, then let the orchid drain completely, standing water at the bottom of the pot is one of the fastest ways to rot the roots. The roots themselves are a good guide, plump and green means well hydrated, silvery-gray means it’s time to water — University of Maryland Extension notes that aerial roots turn from dull silver or white to pale green once enough water has been applied. Most orchids in bark mix want to dry out somewhat between waterings, roughly once a week is a common starting point, adjusted based on the roots rather than a fixed schedule.
If you’re seeing wrinkled, shriveled leaves, working through the specific cause is worth doing, since both overwatering and underwatering can produce surprisingly similar-looking wrinkling, and the roots are what actually tell them apart. If the base feels soft or mushy, root rot is worth checking for directly.
Soil and potting
Regular potting soil holds far too much moisture and will suffocate orchid roots, a chunky orchid bark mix, or a clear plastic pot with a decorative outer pot, is what this plant actually needs, the bark mimics the airy conditions its roots experience growing on tree bark in the wild. Repot every one to two years, or when the bark has broken down and started holding too much moisture, using fresh bark each time.
Humidity and temperature
Above-average humidity is appreciated given orchids’ epiphytic, tropical origins, a humidifier or pebble tray helps in dry climates. Good airflow around the roots matters too, orchids don’t do well in a completely still, stagnant environment. Normal indoor temperatures work well, and many varieties actually benefit from a modest nighttime temperature drop, which can help trigger flowering.
Fertilizing
A fertilizer formulated specifically for orchids, diluted according to the label, every other watering during active growth supports both foliage and blooming. Orchid roots are more sensitive to fertilizer salt buildup than most houseplants, so it’s worth flushing the bark mix with plain water occasionally to prevent buildup.
Propagation
Most orchids are propagated through keikis, small plantlets that occasionally form on a flower spike or at the base of the plant. Once a keiki has developed its own roots a couple of inches long, it can be carefully separated and potted on its own in bark mix. Keikis don’t always appear, and forcing one with hormone paste is possible but not necessary for most home growers.
Getting it to rebloom
Once flowers finish, where you cut the spike matters. Cutting the entire spike down to the base sends the plant’s energy into new growth rather than a second bloom. Cutting just above a node partway down the spike, instead, sometimes triggers a second, smaller flush of flowers from that node on the same spike, this doesn’t always work, but it’s worth trying before cutting the whole thing back. Consistent bright light and a bit of a nighttime temperature drop in fall are the biggest factors in triggering the next full bloom cycle.
Common problems
Wrinkled, shriveled leaves are the most common concern, and checking root texture and color is the fastest way to tell overwatering from underwatering, since both can produce a similar wrinkled look from the outside. If the base feels soft or mushy, root rot is worth checking for directly.
A few things people ask
Is orchid toxic to pets? Most common Phalaenopsis orchids are considered non-toxic to cats and dogs — the ASPCA lists Phalaenopsis orchid as non-toxic to dogs and cats — making them a relatively safe flowering plant to keep around pets.
Are the roots supposed to be outside the pot? Yes, aerial roots growing over the edge of the pot or even outside a clear pot entirely are completely normal for an epiphytic plant like this, they’re not a sign anything is wrong and shouldn’t be trimmed off or tucked back in.
How long does a bloom cycle last? Individual flowers often stay open for six to ten weeks, and a full spike can bloom for a couple of months, considerably longer than most flowering houseplants. After blooming finishes, the plant typically rests for several months before the next cycle begins.
Should I mist my orchid? Occasional misting offers only brief humidity benefits and can encourage fungal problems if water sits on the leaves or in the crown too long. A humidifier or pebble tray is a more effective and safer way to raise ambient humidity. Next reads: Anthurium Care Guide: Light, Water, and Blooming, Hoya Care Guide: Light, Water, and Blooming and Peace Lily Care Guide: Light, Water, and Blooming.