Repotting guide

When & how to repot Florida Arrowroot (Zamia floridana)

Also called Florida Arrowroot, Coontie Palm, Seminole Bread.

More about florida arrowroot

About Florida Arrowroot

Zamia floridana · also called Florida Arrowroot, Coontie Palm · houseplant

Florida Arrowroot is the only cycad native to the continental United States, found in Florida's sandy scrub and pine flatwoods. Its stiff, dark-green pinnate fronds emerge from a mostly subterranean trunk. Although historically used for food starch after detoxification, all parts are severely toxic to pets and humans if ingested without processing.

Mature size: 30–90 cm tall; frond spread 60–120 cm

Watch for — Overwatering and crown rot: The most common cause of death indoors. If the central crown becomes soft or the base turns brown and mushy, the plant is rotting. Remove from pot, cut away rotten tissue, dust with fungicide, and allow to dry for several days before repotting in fresh dry sandy mix.

How to tell florida arrowroot needs repotting

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

Thick roots out of the drainage holes, or circling the surface and lifting the plant.
The pot dries out unusually fast and florida arrowroot wilts between waterings it used to shrug off.
The plant is visibly top-heavy and tips over easily.
Stalled growth and small new leaves over a full season — though with a big specimen, top-dressing is often the better first response before a full repot.

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 florida arrowroot

Every 2–3 years; top-dress in the in-between years. Florida Arrowroot's growth habit — low-growing, clumping cycad with a largely subterranean or barely emergent trunk; produces arching, pinnate fronds from a central crown. spreads slowly via basal offsets. — sets the pace. Florida Arrowroot is the only cycad native to the continental United States, found in Florida's sandy scrub and pine flatwoods. Its stiff, dark-green pinnate fronds emerge from a mostly subterranean trunk. Although historically used for food starch after detoxification, all parts are severely toxic to pets and humans if ingested without processing.

What size pot to step florida arrowroot up to

Move up exactly one pot size. A heavy florida arrowroot dropped into a vastly bigger pot sits in a reservoir of wet soil its roots cannot reach, which rots them and destabilises the plant. In the years between repots, lift off and replace the top 3–5 cm of soil (top-dressing) instead — it refreshes nutrients without the shock of a full repot.

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 florida arrowroot

Early spring, just as new growth restarts, is the ideal window for florida arrowroot. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting florida arrowroot

Consider top-dressing first. If florida arrowroot is not badly root-bound, scrape off and replace the top 3–5 cm of soil instead — far less shock for a big plant that hates moving.
Get help and one size up. For a full repot, choose a pot just one size larger. A heavy plant needs two people and a stable, free-draining pot.
Ease it out on its side. Lay the plant down, slide the pot off, and gently loosen the outer roots. Do not bare-root a mature specimen.
Repot at the same depth. Add fresh sandy, sharply draining mix beneath and around the rootball, keeping the original soil line. Firm it so the trunk is stable and upright.
Water and leave it put. Water thoroughly, then leave florida arrowroot in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave florida arrowroot in exactly the same spot and light it was in before — moving and repotting at the same time is what makes a big specimen drop leaves. Water it in well, then let the top of the soil dry before watering again so the larger volume of fresh soil does not stay sodden. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for florida arrowroot

Florida Arrowroot wants sandy, sharply draining mix. Recreate its native sandy scrub habitat: use 60% coarse sand or perlite with 40% quality potting compost. Neutral to slightly acidic pH (6.0–7.0). The large starchy taproot needs room to expand — use a deep container. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting florida arrowroot — frequently asked questions

How often should you repot florida arrowroot?

Every 2–3 years; top-dress in the in-between years for florida arrowroot. Fully repot florida arrowroot only every 2–3 years; in the in-between years just top-dress the top 3–5 cm of soil. Step up one pot size in spring with sandy, sharply draining mix. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does florida arrowroot need?

When is the best time of year to repot florida arrowroot?

Should you top-dress or fully repot florida arrowroot?

For a big, heavy florida arrowroot, top-dressing — replacing the top 3–5 cm of soil — is the gentler option most years, with a full repot only every 2–3 years. A mature specimen sulks and drops leaves when fully repotted, so do it as rarely as the roots allow.

Should you fertilise florida arrowroot after repotting?

Not immediately. Wait about 4 weeks after repotting florida arrowroot. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.