How to Propagate Orchids: Keikis and Division

Key takeaways

1. Check the growth habit first: single-stem orchids make keikis, clumping orchids with pseudobulbs can be divided.
2. Detach a moth orchid keiki only once it has several good roots, then pot it in bark-based orchid compost.
3. Keep at least three healthy pseudobulbs on every Cattleya division and cut the rhizome with a clean blade.
4. Divide after flowering, in spring or as new roots start, and wait several weeks before fertilizing.
5. Expect one to three years before a keiki or a small division flowers.

Can you propagate orchids at home?

Yes, but not the way you propagate a pothos. Orchids do not root from a leaf in a glass of water, and growing them from seed is a job for commercial labs. At home there are two reliable ways to propagate orchids: keikis, the baby plants some orchids grow on their own, and division, splitting a crowded plant into pieces. Which one works depends on how your orchid grows, so this guide starts with a quick way to tell, then gives a method-by-orchid table and the exact moment to cut, using the Royal Horticultural Society and university extension guidance. Everything below works in either hemisphere because it is timed by what the plant is doing, not by the calendar.

First, how does your orchid grow?

Look at the base of the plant.

• One central stem, leaves stacked left and right, no swollen bulbs: this is a single-stem (monopodial) orchid. The moth orchid, Phalaenopsis, is the one most people own. It has no pseudobulbs, so there is nothing to divide. Your route is a keiki.
• A row of thick, swollen stems joined by a creeping stem at soil level: this is a clumping (sympodial) orchid. The swollen stems are pseudobulbs, which store water, and the creeping stem is the rhizome. Cattleya and many Dendrobium grow this way. Your route is division, and some Dendrobium also make keikis.

How to propagate a moth orchid from a keiki

A keiki (Hawaiian for “baby”) is a small plant that sometimes sprouts from a node on a Phalaenopsis flower stem. It has its own leaves and, given time, its own roots. The RHS advice is simple: wait until it has several good roots, then detach it and pot it up in orchid compost.

1. Wait for roots. Leave the keiki on the mother plant while it grows leaves and several firm roots. Cutting it off too early leaves a plant with nothing to drink with.
2. Cut cleanly. Use a sharp, clean blade and cut the flower stem a short way either side of the keiki, so the baby keeps a small stub of stem.
3. Pot small. Use a small pot and specially formulated bark-based orchid compost, never loam-based or multipurpose compost. The RHS likes transparent pots so you can see the roots and the moisture level.
4. Go easy on water. The RHS suggests watering sparingly at first but misting the leaves daily while new roots settle in.

Keep the young plant warm and in bright light without direct sun. For Phalaenopsis the RHS gives 19–30 °C (66–86 °F) by day and 16–19 °C (61–66 °F) at night, never below 16 °C (60 °F), and away from radiators and draughts.

Can you make a moth orchid grow a keiki?

Sometimes. Specialist orchid suppliers sell keiki paste, a hormone preparation for spent flower stems. The RHS method: with a scalpel, make a vertical cut through the papery bract covering a node, without cutting into the bud underneath; lift the two halves away with tweezers; dab a little paste on the exposed bud. After six to eight weeks a plantlet may form. Ordinary hormone rooting powder will not work. Follow the label of the product you buy.

How to divide an orchid with pseudobulbs

Division suits established, crowded Cattleya and Dendrobium plants. The RHS suggests dividing Dendrobium that have been in the same spot for two or three years, ideally as soon as flowering finishes in spring, which gives the new plants the longest time to recover. NC State Extension says Cattleya can be divided at repotting, usually every two years, in spring or just before new roots sprout from the rhizome.

1. Unpot and clean up. Ease the plant out, shake or tease away the old compost and cut off dead, hollow or mushy roots. UF/IFAS Extension describes division as the same job as repotting: remove the old media and dead or diseased roots, then repot.
2. Plan the cuts. Each piece needs several healthy, green pseudobulbs with thick, fleshy roots. For Cattleya, NC State asks for at least three healthy, plump pseudobulbs per division. Smaller pieces may survive but take longer to bloom.
3. Cut the rhizome. Use a sharp, clean tool and cut straight through the rhizome between pseudobulbs. Clean the blade between plants so you do not carry disease from one to the next.
4. Pot each piece separately in fresh bark-based orchid compost, with the oldest pseudobulb toward the edge so new growth has room. Tall Dendrobium canes may need a thin stake until the roots grip.
5. Hold back fertilizer. UF/IFAS recommends waiting at least several weeks after repotting before you fertilize again.

How long until a new orchid flowers?

Patience is part of the method. The RHS says a Dendrobium keiki may take a year or two to flower, and smaller divisions can take up to three years. Bigger divisions with more pseudobulbs usually bloom sooner because they have more stored reserves. A care reminder for watering and a progress photo every few weeks makes slow growth easier to judge; Flori can set both and keep a care log for each new plant.

Common mistakes when propagating orchids

• Detaching keikis too early. No roots, no plant. Wait for several firm roots.
• Dividing into single pseudobulbs. Tiny divisions sulk for years. Aim for three or more per piece.
• Overpotting. A big pot holds too much wet compost, and the RHS warns this can cause root rot. If roots turn brown and mushy, follow our root rot rescue plan.
• Using ordinary potting soil. Orchids need an open, bark-based mix that UF/IFAS suggests replacing every two years or so.
• Leaving plants in water. The RHS says never let orchid roots dry out completely, but never let the pot sit in water either. Our guide on how to water houseplants shows how to check moisture first.

If you repot regularly anyway, combine the jobs: our repotting without stress guide covers timing and aftercare, and the indoor humidity guide helps young keikis that dry out in heated rooms. If a new division yellows or wilts and you are not sure why, Dr. Flori can work through the symptoms with you and suggest a recovery plan.

Flori editorial team

Written and fact-checked by the Flori team. Every guide cites horticultural sources such as the RHS, university extension services and the ASPCA, and is updated when the advice changes.

General plant care information. Plants vary; when a plant is valuable or a problem spreads quickly, consult a local nursery or plant specialist.