Repotting guide

When & how to repot Strobilanthes gossypinus (Strobilanthes gossypinus)

Also called Hairy strobilanthes, Silvery strobilanthes.

More about strobilanthes gossypinus

About Strobilanthes gossypinus

Strobilanthes gossypinus · also called Hairy strobilanthes, Silvery strobilanthes · tropical

Strobilanthes gossypinus is an unusual shrub from southern India clothed in dense silvery, woolly hairs that give the silver-grey foliage a felted, almost metallic sheen. Unlike most prayer-loving relatives it prefers good light and sharp drainage, tolerating drier conditions. It is grown as a striking foliage feature in warm gardens and conservatories.

Mature size: Roughly 0.6-1 m tall and wide in cultivation.

Watch for — Leggy, sparse growth: Insufficient light makes stems stretch and the felted silver effect thin out. Move to a brighter spot and pinch the growing tips to restore density.

How to tell strobilanthes gossypinus needs repotting

Repotting on a calendar is less reliable than reading the plant. For strobilanthes gossypinus, 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 strobilanthes gossypinus

Every 2–3 years, into bone-dry mix. Strobilanthes gossypinus's growth habit — bushy, branching evergreen shrub with opposite, densely hairy silver-grey leaves; pinch tips to keep it compact and prevent sprawling. — sets the pace. Strobilanthes gossypinus is an unusual shrub from southern India clothed in dense silvery, woolly hairs that give the silver-grey foliage a felted, almost metallic sheen. Unlike most prayer-loving relatives it prefers good light and sharp drainage, tolerating drier conditions. It is grown as a striking foliage feature in warm gardens and conservatories.

What size pot to step strobilanthes gossypinus up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Strobilanthes gossypinus 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 strobilanthes gossypinus

Spring or summer, while strobilanthes gossypinus 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 strobilanthes gossypinus

Repot dry. Do not water strobilanthes gossypinus 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 gritty, free-draining 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 strobilanthes gossypinus 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 strobilanthes gossypinus 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 strobilanthes gossypinus

Strobilanthes gossypinus wants gritty, free-draining potting mix. Use a loam-based mix with added grit, perlite, or coarse sand for sharp drainage. Slightly acidic to neutral pH suits it. Excellent drainage is the single most important factor for this species. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting strobilanthes gossypinus — frequently asked questions

How often should you repot strobilanthes gossypinus?

Every 2–3 years, into bone-dry mix for strobilanthes gossypinus. Repot strobilanthes gossypinus every 2–3 years into a snug pot of gritty, free-draining 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 strobilanthes gossypinus need?

When is the best time of year to repot strobilanthes gossypinus?

Should you water strobilanthes gossypinus after repotting?

No — not straight away. Repot strobilanthes gossypinus 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 strobilanthes gossypinus after repotting?

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