Repotting guide

When & how to repot Begonia peltata (Begonia peltata)

Also called felt begonia, peltata begonia, fuzzy begonia.

More about begonia peltata

About Begonia peltata

Begonia peltata · also called felt begonia, peltata begonia · houseplant

Begonia peltata is a Mexican thick-stemmed begonia covered in dense, silvery-white felt over its peltate, fleshy leaves and stems, giving it a soft, fuzzy, almost succulent look. Adapted to brighter, drier conditions than typical begonias, it wants strong indirect light, careful watering and excellent drainage to keep its hairy foliage from rotting.

Mature size: Around 40-60 cm tall and wide indoors, forming a chunky, felted clump.

How to tell begonia peltata needs repotting

Repotting on a calendar is less reliable than reading the plant. For begonia peltata, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot begonia peltata

Every 2–3 years, into bone-dry mix. Begonia peltata's growth habit — thick-stemmed, semi-succulent begonia with upright fleshy stems and large peltate leaves densely coated in white felt; bushy and somewhat sprawling with age. — sets the pace. Begonia peltata is a Mexican thick-stemmed begonia covered in dense, silvery-white felt over its peltate, fleshy leaves and stems, giving it a soft, fuzzy, almost succulent look. Adapted to brighter, drier conditions than typical begonias, it wants strong indirect light, careful watering and excellent drainage to keep its hairy foliage from rotting.

What size pot to step begonia peltata up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Begonia peltata stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot begonia peltata

Spring or summer, while begonia peltata is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting begonia peltata

Repot dry. Do not water begonia peltata for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty free-draining, sandy or gritty mix ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set begonia peltata at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep begonia peltata completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for begonia peltata

Begonia peltata wants free-draining, sandy or gritty mix. Use a houseplant mix lightened with perlite, pumice or coarse sand. Sharp drainage is essential for this drought-adapted species; heavy, wet soil quickly rots the fleshy stems. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting begonia peltata — frequently asked questions

How often should you repot begonia peltata?

Every 2–3 years, into bone-dry mix for begonia peltata. Repot begonia peltata every 2–3 years into a snug pot of free-draining, sandy or gritty mix, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does begonia peltata need?

When is the best time of year to repot begonia peltata?

Should you water begonia peltata after repotting?

No — not straight away. Repot begonia peltata into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise begonia peltata after repotting?

Not immediately. Wait about 3 weeks after repotting begonia peltata. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.