Plant care guide
Repotting Bromeliads: When, Which Mix, and How to Pot Pups
Updated · First published
How do you repot a Bromeliad?
Bromeliads rarely need repotting for root space: their roots are small and mostly anchor the plant. Repot to pot up pups once they reach about a third to half the parent's size, to replace a mix that stays soggy, or to rescue a plant from rot. Use a small pot and a coarse, fast-draining mix.
What to do first
Cut pups from the parent at the joint with a clean knife. Pot each in a small pot, about 8–10 cm (3–4 in), of orchid-type or bark-based mix, no deeper than the base of the lowest leaves. Stake it if it wobbles, keep the mix barely moist, and fill the cup with water if it has one.
Repotting a bromeliad is different from repotting most houseplants. University of Wisconsin–Madison Extension’s bromeliad guide explains that the small root system mainly anchors the plant, while the leaves take over most water and nutrient uptake. A bigger pot rarely helps. The usual reasons to repot are pups, a soggy mix or rot.
When to repot
- Pups are ready to separate. Most bromeliads flower once, then the parent declines while producing offsets, or pups. Clemson Extension’s bromeliads factsheet says pups can be separated and potted up as new plants.
- The mix stays wet. Clemson warns that bromeliads are prone to root rot in wet soil, and that rot usually follows a slowly draining mix or watering too often.
- The plant is rocking or tipping. A top-heavy plant in a small pot can be supported without a bigger pot (see below).
A healthy, firmly anchored plant in a free-draining mix can stay where it is.
How big should the pup be?
Sources give slightly different thresholds:
| Source | When to separate |
|---|---|
| UW–Madison | About one-third the size of the mother plant |
| UGA Extension | Any time after about one-third the size of the original |
| Colorado State | About half the size of the parent |
| NC State (Aechmea fasciata) | About 15 cm (6 in) tall |
Any point in that range works. UGA’s pup guide notes pups will form their own roots after potting even if they have few or none.
Choose the pot and mix
Pot size. UW–Madison says to use a pot smaller than you would use for other plants of the same size, because oversized pots encourage rot. UGA suggests a pot of about 8–10 cm (3–4 in) for a single pup.
Pot type. UW–Madison says clay pots dry faster and suit you if you tend to overwater. Plastic holds moisture longer and suits dry rooms or infrequent watering.
Mix. UW–Madison recommends an acidic mix that holds moisture yet drains quickly, such as an orchid bark mix with coarse perlite and humus, and says to avoid garden soil. NC State’s Aechmea fasciata profile suggests an orchid mix. UGA accepts a soilless mix, or potting soil with extra perlite or fine pine bark. University of Maryland Extension’s repotting guide groups bromeliads with epiphytes that may rot in regular potting mix.
How to repot or pot up pups
- Empty the cup before you tip the plant, so the water does not soak the mix.
- Remove the plant from its pot. UGA says to take everything out if you plan to discard a declining parent. If the parent still looks good, cut pups off while it stays potted.
- Cut each pup off where it joins the parent, using a sharp knife or hand pruners, as UGA describes.
- Trim dead roots. Maryland advises removing dead, brown roots when repotting.
- Pot at the right depth. UGA says to plant only up to the base of the lowest leaves. Do not bury the pup deeper to steady it.
- Steady it with stakes. UGA suggests two or three small stakes, such as chopsticks, until roots anchor it. For a top-heavy adult, UW–Madison suggests setting the small pot inside a larger, heavier one.
- Skip the gravel layer. Maryland says not to fill the bottom of the pot with gravel.
Aftercare
UW–Madison advises keeping new pups somewhat shaded and humid, with the mix on the dry side to discourage rot. UGA says to keep the mix moist but not constantly wet, give slightly less light than established plants, and keep the cup filled on cup-forming types. Our central cup watering guide covers how much water the cup needs and how often to flush it.
Once the pup is rooted, give it more light; UGA notes light is critical for later flowering. UGA says blooming generally follows one to three years after separation. Colorado State’s bromeliad page suggests feeding the mix, never the cup, at a third to half the label rate every one to two months. Clemson recommends half strength or less in summer.
Signs a repot went wrong
A pup that turns soft or brown at the base after potting points to rot. UW–Madison keeps new pups on the dry side for this reason, and NC State warns overwatering can cause root rot and that crown rot also occurs. Let the mix dry, empty the cup and check the base. The bromeliad hub lists the rest.
Related guides
Other bromeliad problems we cover: scale. For an overview of every common bromeliad problem, see bromeliad problems and solutions.
References
- University of Wisconsin–Madison Extension: Bromeliads
- UGA Cooperative Extension, Cobb County: Grow Bromeliads From Pups
- Clemson Cooperative Extension, HGIC 1501: Bromeliads
- Colorado State University Extension, PlantTalk 1305: Bromeliads
- NC State Extension Gardener Plant Toolbox: Aechmea fasciata
- University of Maryland Extension: Potting and Repotting Indoor Plants
How this guide was put together: University of Wisconsin–Madison Extension, UGA Cooperative Extension, Clemson Cooperative Extension, Colorado State University Extension, NC State Extension and University of Maryland Extension guidance.