Repotting guide

When & how to repot New Zealand Spinach (Spinacia oleracea 'New Zealand')

Also called New Zealand Spinach, Warrigal Greens, Kokihi.

More about new zealand spinach

About New Zealand Spinach

Spinacia oleracea 'New Zealand' · also called New Zealand Spinach, Warrigal Greens · edible

A warm-season leafy green that fills the summer gap when true spinach bolts in the heat. Trailing, succulent stems produce small, thick, arrow-shaped leaves with a mild spinach-like flavour. Heat and drought tolerant once established. Harvest shoot tips regularly to encourage bushy, continuous growth throughout summer. Matures in 55–70 days.

Mature size: 20–30 cm (8–12 in) tall, spreading 60–100 cm (24–39 in) wide

How to tell new zealand spinach needs repotting

Repotting on a calendar is less reliable than reading the plant. For new zealand spinach, 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 new zealand spinach

Every 2–3 years, into bone-dry mix. New Zealand Spinach's growth habit — spreading, trailing annual with succulent stems and small, thick, triangular leaves; forms a dense groundcover — sets the pace. A warm-season leafy green that fills the summer gap when true spinach bolts in the heat. Trailing, succulent stems produce small, thick, arrow-shaped leaves with a mild spinach-like flavour. Heat and drought tolerant once established. Harvest shoot tips regularly to encourage bushy, continuous growth throughout summer. Matures in 55–70 days.

What size pot to step new zealand spinach up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. New Zealand Spinach 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 new zealand spinach

Spring or summer, while new zealand spinach 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 new zealand spinach

Repot dry. Do not water new zealand spinach 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 well-draining, fertile soil; tolerates sandy or average soils 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 new zealand spinach 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 new zealand spinach 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 new zealand spinach

New Zealand Spinach wants well-draining, fertile soil; tolerates sandy or average soils. pH 6.8–7.0. Not as demanding as true spinach — grows in average garden soil with modest organic matter. Good drainage is essential; waterlogged soil causes root rot. Tolerates coastal, slightly saline soils. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting new zealand spinach — frequently asked questions

How often should you repot new zealand spinach?

Every 2–3 years, into bone-dry mix for new zealand spinach. Repot new zealand spinach every 2–3 years into a snug pot of well-draining, fertile soil; tolerates sandy or average soils, 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 new zealand spinach need?

When is the best time of year to repot new zealand spinach?

Should you water new zealand spinach after repotting?

No — not straight away. Repot new zealand spinach 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 new zealand spinach after repotting?

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