Growli
Let's go

Repotting guide

When & how to repot Tulbaghia (Tulbaghia violacea)

Also called society garlic, pink agapanthus, wild garlic.

More about tulbaghia

About Tulbaghia

Tulbaghia violacea · also called society garlic, pink agapanthus · herb

Society garlic is a clump-forming South African perennial with grassy, garlic-scented foliage and long-stemmed umbels of fragrant lilac-pink flowers through summer into autumn. Tough, drought-tolerant and long-flowering, it suits sunny borders, gravel gardens and containers. The leaves are edible with a mild garlic flavour, but the plant contains organosulphur compounds that make it risky for pets.

Mature size: 30-60 cm tall and 25-40 cm wide, slowly clumping.

Watch for — Frost damage to crowns: Only borderline hardy; in cold areas mulch deeply or grow in pots that can be moved under cover for winter.

How to tell tulbaghia needs repotting

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

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 tulbaghia

Every 2–3 years, into bone-dry mix. Tulbaghia's growth habit — evergreen to semi-evergreen clump-forming perennial spreading slowly by fleshy rhizomes, with grassy foliage and tall, bare flower stems held above the leaves. — sets the pace. Society garlic is a clump-forming South African perennial with grassy, garlic-scented foliage and long-stemmed umbels of fragrant lilac-pink flowers through summer into autumn. Tough, drought-tolerant and long-flowering, it suits sunny borders, gravel gardens and containers. The leaves are edible with a mild garlic flavour, but the plant contains organosulphur compounds that make it risky for pets.

What size pot to step tulbaghia up to

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

Spring or summer, while tulbaghia 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 tulbaghia

  1. Repot dry. Do not water tulbaghia for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
  2. Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty fertile, free-draining loam or gritty mix ready.
  3. 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.
  4. Pot into dry mix. Set tulbaghia at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
  5. 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 tulbaghia 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 tulbaghia

Tulbaghia wants fertile, free-draining loam or gritty mix. Grows in most well-drained soils and copes with poor ground. For containers use a loam-based compost with added grit. Avoid heavy, waterlogged soils that rot the rhizomes. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting tulbaghia — frequently asked questions

How often should you repot tulbaghia?

Every 2–3 years, into bone-dry mix for tulbaghia. Repot tulbaghia every 2–3 years into a snug pot of fertile, free-draining loam 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 tulbaghia need?

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Tulbaghia 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. Use our pot size calculator to size it from the plant's current pot and root spread.

When is the best time of year to repot tulbaghia?

Spring or summer, while tulbaghia 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.

Should you water tulbaghia after repotting?

No — not straight away. Repot tulbaghia 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 tulbaghia after repotting?

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

Related guides