Repotting Houseplants: When, How and What to Use

Repotting is plant-specific in our sources: some want a bigger pot every year or two, others do best slightly root-bound, and for three of our 10 plants the sources give no repotting guidance at all. Spider plant is the frequent one (yearly while young, per UF/IFAS), aloe every two years, snake plant fresh media about every 5 years, and peace lily and fiddle leaf fig tolerate being pot-bound. This guide gives each plant’s wording and mix, and flags where a source is one person’s routine rather than a research rate.

When to repot, by plant

Where the sources differ

Spider plant. UF/IFAS gives a schedule, once a year while young then every other year. Wisconsin says spider plants “need frequent repotting to do their best” because they grow quickly and their roots crowd easily, and Clemson says to repot before the roots expand enough to crack the container. The three agree that this plant outgrows its pot, and differ on how often.

Snake plant. Penn State’s “every 5 years or so” is about fresh media. UGA’s “every few years” is about moving to a larger pot, with the note that the roots “have been known to bust pots.” These may describe different jobs, and our sources do not say.

Monstera. NC State says repot if needed in spring. Wisconsin says container-grown plants need frequent repotting. Our sources do not define “frequent.”

Fiddle leaf fig. The Penn State source is a Master Gardener column, and our notes record that its repotting and fertilizer remarks are the columnist’s personal routine, not a research rate. The columnist says fiddle leaf figs “love to be potbound but, like all plants, drainage is extremely important.” UF/IFAS EDIS is the research-based note: cut roots circling the container before planting, since these can cause the tree to become unstable as it grows older.

Pot size

The sources are sparse on pot size, and the figures we have are:

• Peace lily: a container just one to two inches larger than the original pot (Clemson). Using too large a pot “may keep the potting mix too wet, leading to root rot.”
• Aloe vera: do not increase the new pot by more than two pot sizes, because too large a container can hold too much moisture that could lead to root rot (UF/IFAS).
• Pothos: a “slightly larger container” (Penn State).
• Snake plant: a “slightly larger pot” (UGA), and UGA says to choose a heavy-weight pot to prevent taller plants from toppling over.

The shared point is that a pot that is too big stays wet, which links back to watering. Our watering guide has the rules this affects. Our sources give no pot-size figure for spider plant, monstera, fiddle leaf fig, ZZ plant, calathea or rubber plant.

What to put in the pot

Aloe and snake plant lean to coarse, drying mixes, while peace lily, calathea and monstera lean to mixes that hold some moisture. That grouping is our reading of the table.

Putting it together

These steps are our summary of the sourced points, not a source’s procedure:

1. Check why you are repotting. Roots through the drainage holes or circling the surface (peace lily, Clemson), crowded roots (spider plant, snake plant), or a cracked pot are the signs our sources name.
2. Choose a pot only a little bigger. One to two inches for peace lily, up to two pot sizes for aloe at most, “slightly larger” for pothos and snake plant.
3. Use the mix in the table. Drainage is the common thread, including holes in the pot (NC State for aloe, the Penn State columnist for fiddle leaf fig).
4. Cut circling roots on a fiddle leaf fig before planting (UF/IFAS EDIS). Our sources give no root pruning step for other plants.
5. Time it. Pothos is repotted in spring (Penn State), and NC State says to repot monstera in spring if needed. Our sources give no season for the others.

What we could not source

Repotting guidance for ZZ plant, calathea and rubber plant is missing from the pages we used, so we do not state a schedule. The same goes for how to loosen a root ball, what to do with roots, and when to water after repotting.

Related guides

Light and water decide how quickly a plant fills its pot. See low light plants and easy houseplants. For each plant’s ASPCA status, see pet safe houseplants.