Repotting guide

When & how to repot Purple Vygie (Drosanthemum hispidum)

Also called Purple Vygie, Hairy Dewflower, Purple Ice Plant.

More about purple vygie

About Purple Vygie

Drosanthemum hispidum · also called Purple Vygie, Hairy Dewflower · flowering

A distinctive, mat-forming succulent from South Africa, covered in fine hair-like papillae that give leaves a dewy shimmer and stems a fuzzy appearance — hence 'hairy dewflower'. In summer it produces a vivid display of bright pink to reddish-purple, daisy-like flowers. Drought-hardy to -7°C when dry, it suits gravel gardens, sunny banks, and containers in frost-light climates.

Mature size: 45–60 cm tall; spreading 60–90 cm wide at maturity

Watch for — Leggy, non-flowering growth: Plants grown in insufficient light become straggly and bloom poorly. Trim back after flowering to encourage compact regrowth, and move containers to the sunniest available position. Replace plants that have become too woody after 3–4 years.

How to tell purple vygie needs repotting

Repotting on a calendar is less reliable than reading the plant. For purple vygie, 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 purple vygie

Every 2–3 years, into bone-dry mix. Purple Vygie's growth habit — mat-forming, spreading succulent subshrub with rough hairy stems and cylindrical, pale green to red-flushed succulent leaves — sets the pace. A distinctive, mat-forming succulent from South Africa, covered in fine hair-like papillae that give leaves a dewy shimmer and stems a fuzzy appearance — hence 'hairy dewflower'. In summer it produces a vivid display of bright pink to reddish-purple, daisy-like flowers. Drought-hardy to -7°C when dry, it suits gravel gardens, sunny banks, and containers in frost-light climates.

What size pot to step purple vygie up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Purple Vygie 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 purple vygie

Spring or summer, while purple vygie 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 purple vygie

Repot dry. Do not water purple vygie 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 very free-draining, lean sandy or gritty soil 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 purple vygie 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 purple vygie 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 purple vygie

Purple Vygie wants very free-draining, lean sandy or gritty soil. Performs best in nutrient-poor, sandy or gravelly soil with excellent drainage. Add 50–70% coarse grit or pumice to a standard cactus compost when growing in containers. Tolerates slightly acidic to alkaline conditions. Rich soil produces lax, disease-prone growth with fewer flowers. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting purple vygie — frequently asked questions

How often should you repot purple vygie?

Every 2–3 years, into bone-dry mix for purple vygie. Repot purple vygie every 2–3 years into a snug pot of very free-draining, lean sandy or gritty soil, 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 purple vygie need?

When is the best time of year to repot purple vygie?

Should you water purple vygie after repotting?

No — not straight away. Repot purple vygie 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 purple vygie after repotting?

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