Disclosure: Amazon links on this page are affiliate links, so this site may earn a commission at no extra cost to you. Commissions don’t decide which products are recommended. See the full affiliate disclosure.

A monstera that has outgrown its pot shows it in a few ways: roots growing out of the drainage holes, roots circling the bottom of the pot, soil that dries out fast, and new leaves that come in smaller than the ones before. This guide covers how to confirm the plant is root-bound, how to size the new pot, a chunky soil mix, the repot itself, and what to expect afterward.

Signs it's time to repot

Roots escaping the drainage hole. Long, pale roots pushing out of the bottom of the nursery pot are one of the clearest signs of a root-bound plant.

Slower growth and smaller leaves. A root-bound monstera puts out new leaves less often, and they come in smaller, with less surface area and fewer fenestrations. The University of Wisconsin Extension notes that "a pot-bound plant left uncared for often has nutrient deficiency symptoms (e.g., yellowing) and stunted growth."

Soil that dries out fast. Root-bound plants have so much root mass relative to soil volume that water moves through the pot in minutes instead of soaking evenly. If you find yourself watering far more often than you'd expect, the roots may have filled the pot, leaving little actual soil to hold moisture.

A root ball that holds the shape of the pot. To check, tip the plant over and gently ease the root ball out of its pot; done gently, this does no damage. A dense, solid mass of roots with almost no loose soil visible, formed into a tight cylinder that holds the shape of the pot, is what advanced root binding looks like.

Toxicity note: before you handle monstera, be aware that the plant is listed as toxic to dogs and cats via insoluble calcium oxalates by the ASPCA Swiss Cheese Plant entry. The sap can also irritate human skin, so wear gloves for repotting.

Choosing the new pot: size matters here

It's tempting to give a monstera as much room as possible and go from a 6-inch nursery pot straight to a 12-inch pot, on the theory that more space means more room to grow. That's a mistake. The University of Wisconsin Extension recommends repotting "into a pot that is one size larger than its current pot," and the Missouri Botanical Garden says to move a plant "to a container that is only slightly larger." Clemson HGIC puts it as a pot "1 or 2 inches larger in diameter than the current pot." For a plant in a 6-inch pot, that means moving to an 8-inch pot, not a 12-inch pot.

The reason is practical: excess soil volume holds moisture the roots can't access, which creates conditions for root rot. When a plant's root system is surrounded by far more soil than it can colonize, that extra soil stays wet while the roots are fine, and anaerobic conditions develop.

Whatever pot you choose, it needs a drainage hole.

The soil mix

Skip potting mix straight from the bag. Monstera is an aroid — it naturally grows as a hemiepiphyte in tropical forest conditions, with roots that are accustomed to good aeration and fast drainage. Standard potting mix is typically too dense and moisture-retentive for aroids once they're in a pot without constant airflow around the roots.

One option combines:

  • potting mix (peat-based or coir-based)
  • perlite, such as Espoma Organic Perlite
  • orchid bark or coir chunks for additional drainage and air pockets

The Missouri Botanical Garden's monstera page calls for "a peaty soil-based potting mix" for this species and says to water regularly in the growing season, "allowing soils to dry some between waterings." Adding perlite and bark to the base mix keeps it from staying wet too long between waterings.

A thin layer of coarse material at the bottom of the pot is sometimes recommended to improve drainage at the root zone. This is not a universal recommendation; some sources argue it doesn't help and can create a perched water table effect.

The actual repot

Repot in spring. The University of Wisconsin Extension recommends repotting "at the beginning of active growth (spring for most plants)" — the plant is starting to ramp up metabolic activity and will respond to increased root space with accelerated growth. Repotting in winter, when the plant is dormant, gives it less ability to recover from root disturbance.

  1. Water the day before. This hydrates the roots and makes the root ball easier to remove without tearing.
  2. Pre-moisten the new mix. Dry soil around a root ball that's been disturbed is stressful — the roots can't access moisture immediately, and they're already in a recovery state. Moistening the mix first puts the roots in immediate contact with something usable.
  3. Ease the root ball out. Tip the plant sideways and ease the root ball out of the pot. On a root-bound plant it comes out as a single dense cylinder. White outer roots are healthy; roots toward the center that are brown and more compressed are normal, because the outer roots are the active ones and the inner core is older tissue.
  4. Loosen the outer roots. Use your fingers to gently loosen the outer layer of roots — don't pull them apart aggressively, just separate the tightest root coils from the base of the cylinder — and shake loose some of the old potting mix. Loosening the outer roots encourages them to spread into the new soil rather than continuing to circle. Root-bound plants that aren't loosened can continue circling indefinitely even with more space available.
  5. Trim damaged roots. Cut away any roots that have turned brown-grey and mushy, using sterile pruning shears. Mushy, discolored roots are compromised, and removing them is better than leaving them in the new environment.
  6. Guide the aerial roots. Aerial roots, the thick, rope-like roots a monstera sends out toward surfaces to climb, can be gently guided into the soil, where they'll contribute to moisture uptake, or left to trail. Don't cut them unless they're dead or damaged.
  7. Set the height and backfill. Add enough pre-moistened mix to the bottom of the new pot that the top of the root ball sits within about 1 inch of the rim, as Clemson HGIC recommends, not lower. Set the root ball in and backfill around the sides with more mix. Press gently to firm the soil, but don't compact it.

For watering and aftercare in the days after a repot, see the general repotting guide.

Recovery

Some drooping right after repotting is normal — the root system has been disturbed and can't take up water efficiently yet. An older leaf may yellow and drop; this is common with monstera repots, as the plant sheds older leaves while it redirects energy to root establishment. The first leaves after a repot are often smaller while the root system is still establishing.

Resist the urge to move the plant, change the watering schedule, or fertilize while it settles in. Good light and adequate root space are the two primary drivers of large, fenestrated leaf development. For ongoing care, see the monstera care guide.

Common mistakes

Waiting too long. Clemson HGIC says fast-growing plants may need repotting annually and slow-growing plants every two to three years, or sooner when you see signs of root binding; the Missouri Botanical Garden says plants "in pots up to 10 inches in diameter should be repotted annually." A root-bound plant keeps underperforming until it gets more room.

Jumping several pot sizes. More soil than the roots can use stays wet and invites root rot. Go up 1 to 2 inches in diameter, per Clemson HGIC.

Using dry mix. Pre-moisten the potting mix so the disturbed roots have moisture to draw on right away.

Cutting healthy aerial roots. Guide them into the soil or leave them to trail; trim only dead or damaged ones.

Fertilizing too soon. Hold off on fertilizer until the plant has settled in, to avoid burning the disturbed roots.

FAQ

When should I repot my monstera?

The best time is early spring, before the growing season begins. The University of Wisconsin Extension advises repotting "at the beginning of active growth (spring for most plants)," which lets the plant recover quickly and take advantage of the new root space immediately. Signs that it's time: roots emerging from drainage holes, significantly slowed growth compared to prior years, soil drying out unusually fast, or a root ball that holds the shape of the pot when removed. The Missouri Botanical Garden says plants in pots up to 10 inches in diameter should be repotted annually.

How much bigger should the new pot be?

One pot size up — Clemson HGIC says one or two inches larger in diameter than the current pot. UW Extension recommends "a pot that is one size larger than its current pot," and the Missouri Botanical Garden says "only slightly larger." Going larger seems logical — more space, faster growth — but excess soil volume holds moisture the roots can't reach and creates root rot conditions. For a plant in a 6-inch pot, move to an 8-inch pot; for an 8-inch pot, move to a 10-inch pot. The one exception is if the plant is severely root-bound and the root mass is so dense that it needs more space to decompress — in that case, a two-inch jump is reasonable.

Why is my monstera drooping after repotting?

Some drooping right after repotting is normal and expected — the root system has been disturbed and can't take up water efficiently yet. Don't interpret drooping as dehydration and overwater; check that the soil is reasonably moist and hold your schedule. If drooping persists once the plant should have settled in, or if leaves are yellowing in addition to drooping, check whether you may have buried the stem too deep (which can cause stem rot) or whether the root rot you trimmed was more extensive than it appeared. Give the plant a stable environment — consistent light, no drafts — and resist the urge to change conditions while it's trying to establish.

Sources: University of Wisconsin Extension — Houseplant Care, Clemson HGIC — Indoor Plants: Transplanting and Repotting, Missouri Botanical Garden — Monstera deliciosa, Missouri Botanical Garden — Indoor Plants or Houseplants (PDF), ASPCA Swiss Cheese Plant