Repotting guide

When & how to repot Plectranthus Oertendahlii (Plectranthus oertendahlii)

Also called Oertendahl's plectranthus, Brazilian coleus, prostrate coleus.

More about plectranthus oertendahlii

About Plectranthus Oertendahlii

Plectranthus oertendahlii · also called Oertendahl's plectranthus, Brazilian coleus · houseplant

Plectranthus oertendahlii is a trailing, easy-care foliage plant grown for its rounded, scallop-edged leaves with silvery-white veins above and purple undersides. A member of the mint family, it spreads readily and bears small tubular white to pale-lilac flowers. It makes an excellent low-maintenance hanging-basket or ground-cover houseplant and is confirmed pet-safe.

Mature size: 15-30 cm tall with trailing stems spreading or hanging 30-60 cm or more.

Watch for — Stem and root rot: Overwatering or heavy, soggy compost rots the soft stems and roots. Let the surface dry between waterings, use a free-draining mix and never leave the pot standing in water.

How to tell plectranthus oertendahlii needs repotting

Repotting on a calendar is less reliable than reading the plant. For plectranthus oertendahlii, 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 plectranthus oertendahlii

Every 2–3 years, into bone-dry mix. Plectranthus Oertendahlii's growth habit — low, spreading and trailing semi-succulent perennial that roots at the nodes, forming dense mats or cascading from baskets; grows quickly and is easily kept full by pinching. — sets the pace. Plectranthus oertendahlii is a trailing, easy-care foliage plant grown for its rounded, scallop-edged leaves with silvery-white veins above and purple undersides. A member of the mint family, it spreads readily and bears small tubular white to pale-lilac flowers. It makes an excellent low-maintenance hanging-basket or ground-cover houseplant and is confirmed pet-safe.

What size pot to step plectranthus oertendahlii up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Plectranthus Oertendahlii 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 plectranthus oertendahlii

Spring or summer, while plectranthus oertendahlii 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 plectranthus oertendahlii

Repot dry. Do not water plectranthus oertendahlii 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 light, free-draining peat-free potting 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 plectranthus oertendahlii 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 plectranthus oertendahlii 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 plectranthus oertendahlii

Plectranthus Oertendahlii wants light, free-draining peat-free potting mix. A standard well-aerated houseplant mix with added perlite suits its fast, soft growth. Good drainage is key, as the succulent-ish stems rot in heavy, waterlogged compost. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting plectranthus oertendahlii — frequently asked questions

How often should you repot plectranthus oertendahlii?

Every 2–3 years, into bone-dry mix for plectranthus oertendahlii. Repot plectranthus oertendahlii every 2–3 years into a snug pot of light, free-draining peat-free potting 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 plectranthus oertendahlii need?

When is the best time of year to repot plectranthus oertendahlii?

Should you water plectranthus oertendahlii after repotting?

No — not straight away. Repot plectranthus oertendahlii 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 plectranthus oertendahlii after repotting?

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