Repotting guide

When & how to repot Zamia Pumila (Zamia pumila)

Also called coontie, guayiga, Puerto Rico zamia.

More about zamia pumila

About Zamia Pumila

Zamia pumila · also called coontie, guayiga · flowering

Zamia pumila, the coontie, is a slow, low cycad from Florida and the Caribbean, not a true palm. It forms a stout underground stem topped with stiff, glossy, fern-like fronds. Tough and drought-hardy once established, it favours bright light and sharp drainage. Every part is dangerously toxic to pets and people because of cycasin.

Mature size: Typically 0.6-1.5 m tall and wide; fronds 0.5-1 m long. Very slow, often taking years to add a new flush.

Watch for — Caudex or root rot: The most common killer, caused by overwatering or poor drainage. Use a gritty mix, water only when dry, and never let the swollen stem sit in wet soil.

How to tell zamia pumila needs repotting

Repotting on a calendar is less reliable than reading the plant. For zamia pumila, 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 zamia pumila

Every 2–3 years, into bone-dry mix. Zamia Pumila's growth habit — slow-growing evergreen cycad with a mostly subterranean swollen stem (caudex) and a rosette of stiff, arching, pinnate fronds. new growth flushes in occasional bursts. dioecious, producing separate male and female cones rather than flowers. — sets the pace. Zamia pumila, the coontie, is a slow, low cycad from Florida and the Caribbean, not a true palm. It forms a stout underground stem topped with stiff, glossy, fern-like fronds. Tough and drought-hardy once established, it favours bright light and sharp drainage. Every part is dangerously toxic to pets and people because of cycasin.

What size pot to step zamia pumila up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Zamia Pumila 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 zamia pumila

Spring or summer, while zamia pumila 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 zamia pumila

Repot dry. Do not water zamia pumila 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 fast-draining sandy or gritty 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 zamia pumila 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 zamia pumila 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 zamia pumila

Zamia Pumila wants fast-draining sandy or gritty mix. Use a sandy, gritty medium such as a cactus/palm mix amended with coarse sand or perlite. Sharp drainage is essential to protect the caudex. Slightly acidic to neutral pH; never leave the crown sitting in waterlogged soil. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting zamia pumila — frequently asked questions

How often should you repot zamia pumila?

Every 2–3 years, into bone-dry mix for zamia pumila. Repot zamia pumila every 2–3 years into a snug pot of fast-draining sandy 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 zamia pumila need?

When is the best time of year to repot zamia pumila?

Should you water zamia pumila after repotting?

No — not straight away. Repot zamia pumila 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 zamia pumila after repotting?

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