Growli

Plant care

Old Man Palm (Miraguano Palm) care

Coccothrinax crinita

Also called Miraguano Palm, Thatch Palm, Cuban Old Man Palm.

RHS H1CUSDA 10-12Pet-safeIndoor Up to 10 m outdoors

Watering rhythm

10-14days

When the top 4-5 cm of soil is dry, roughly every 10-14 days

Light

Direct sun (at least 4-6 hours)

Soil

Sandy, fast-draining loam or cactus/palm mix

Humidity

50-75%

Temp

12-35°C

Pet safety

Pet-safe

Mature size

Up to 10 m outdoors

Care at a glance

Light

Old Man Palm needs sun on the leaves, not just bright ambient room light. Full sun is essential for healthy trunk fibre development and compact growth. Will survive in partial shade but the distinctive woolly sheath is less pronounced and growth is even slower. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water old man palm when the top 4-5 cm of soil is dry, roughly every 10-14 days. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Drought-tolerant once established; moderately water young container plants during the growing season. Reduce in winter. Overwatering causes root rot — drainage is critical.

Soil and pot

Old Man Palm grows best in sandy, fast-draining loam or cactus/palm mix. Grows naturally in thin, rocky alkaline soils in Cuba. A gritty, fast-draining mix replicates these conditions best. Add coarse perlite or horticultural grit to standard potting compost for container culture. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Old Man Palm sits happiest at around 50-75% humidity and 12-35°C (54-95°F). Native to seasonally dry tropical zones; tolerates moderate humidity fluctuations. The woolly trunk fibres appear to function partly as an adaptive buffer against moisture loss. If you keep the room above 12 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed old man palm sparingly. Feed sparingly with a balanced palm fertiliser in spring and summer; excess nutrients promote rapid but thin, less attractive growth. One or two light applications per year is sufficient. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on old man palm in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Very slow growthInherently slow; do not mistake this for poor health. Overfeeding or overwatering in an attempt to accelerate growth causes more harm than good.
  • Root rotThe primary cultural failure; ensure excellent drainage in all potting or planting situations.
  • Spider mitesIn dry, warm conditions; treat with insecticidal soap or neem oil, taking care to reach the dense trunk fibres where mites can shelter.
  • Scale insectsCan colonise the woolly trunk sheath; inspect regularly and treat with horticultural oil.
  • Trunk fibre lossOld fibres naturally shed over time; this is normal and does not indicate disease unless accompanied by other symptoms.

Companion plants

Old Man Palm pairs well with Agave, Cycas revoluta, Aloe, and Bismarckia nobilis. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Seed only; sow fresh seed at 28–30°C in a warm, humid propagator. Germination is slow and unpredictable, taking 3–8 months. Seedlings grow extremely slowly and require patience and warm conditions. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Old Man Palm is pet-safe. Coccothrinax crinita is not individually listed by the ASPCA. As a true palm (Arecaceae), it does not contain known toxic compounds relevant to dogs or cats. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Old Man Palm care — frequently asked questions

What is the common name for Coccothrinax crinita?

Coccothrinax crinita is most commonly called Old Man Palm, but it is also known as Miraguano Palm, Thatch Palm, Cuban Old Man Palm. The names refer to the same species, so care instructions for Old Man Palm apply identically to anything sold as Miraguano Palm.

How much light does old man palm need?

Old Man Palm grows best in direct sun (at least 4-6 hours). Full sun is essential for healthy trunk fibre development and compact growth. Will survive in partial shade but the distinctive woolly sheath is less pronounced and growth is even slower.

How often should I water old man palm?

Water old man palm when the top 4-5 cm of soil is dry, roughly every 10-14 days. Drought-tolerant once established; moderately water young container plants during the growing season. Reduce in winter. Overwatering causes root rot — drainage is critical. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is old man palm toxic to cats and dogs?

Old Man Palm is pet-safe. Coccothrinax crinita is not individually listed by the ASPCA. As a true palm (Arecaceae), it does not contain known toxic compounds relevant to dogs or cats.

What USDA hardiness zone does old man palm grow in?

Old Man Palm is rated for USDA zone 10-12 and RHS hardiness H1C. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Old Man Palm deep-dive guides

Every aspect of old man palm care, each with its own calibrated guide:

Featured in these plant shortlists

Old Man Palm qualifies for 9 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Old Man Palm is also known as Miraguano Palm, Thatch Palm, and Cuban Old Man Palm.