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Plant guide

Acai palm.

Euterpe oleracea

Pronounced yoo-TER-pee oh-ler-AY-see-uh

Also known as Assai Palm, Açaí, cabbage palm, euterp-palm, manicola-palm

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Açaí Palm
Photo by B. Phalan (CC BY) via iNaturalist

The acai palm is a tall, slender tree native to the rainforests of South America. It is famous for its dark purple berries that are packed with nutrients. You will need plenty of space and humidity to keep this palm happy.

Another photo of Acai palm
Photo by liriodobrejoufscar (CC BY) via gbif

At a glance

Care level
Difficult
Plant type
Palm
Light
Bright indirect light
Indoor light
Bright indirect
Water
Every 2 to 4 days
Mature size
20 to 30 meters
Growth rate
Medium
Hardiness
USDA 10 to 11
Bloom time
Year round in tropical climates

Care

Keep the soil consistently moist and provide high humidity to mimic its tropical home. Watch for brown leaf tips which often signal that the air is too dry. Ensure the plant stays in a warm environment as it cannot handle cold temperatures.

Watering
Keep the soil evenly moist but never waterlogged.
Feeding
Use a balanced palm fertilizer during the active growing season.
Pruning
Remove dead or yellowing fronds at the base to keep the plant tidy.
Repotting
Repot only when the roots have completely filled the current container.
Soil
Rich, well-draining, acidic soil
Soil pH
5.0 to 6.5
Temperature
15 to 35°C
Humidity
70 to 95%
Drought tolerance
Low
Lifespan
Perennial, typically 20 to 30 years
Fragrance
Light
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of the drainage holes
  • Stunted growth despite regular feeding
  • Soil drying out too quickly

Safety

People
The plant is not considered toxic, but the fruit pits are hard and pose a choking hazard if swallowed whole.
Children
The tall, slender trunks are not suitable for climbing, and the fallen fruit pits are a choking hazard for small children.
Contact allergens
The fibrous material around the trunk can be abrasive to sensitive skin.
Airborne allergens
Pollen from the inflorescence may cause mild irritation in sensitive individuals.
Edibility
The fruit must be processed correctly to remove the hard pit and extract the pulp safely.

How to identify it

  • Slender, multi-stemmed gray trunks
  • Long, arching pinnate fronds
  • Small, dark purple round fruits
  • Drooping leaflets on mature fronds
Height
15 to 30m
Spread
3 to 6m
Leaves
green, evergreen
Flowers
white, cream, 0.5 to 1cm
Fruit
purple, black, Year round

Problems to watch for

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    Growing it

    Propagation
    seed, division
    When to plant
    spring, summer
    Overwintering
    Keep the plant in a warm, frost free environment with high humidity during the winter months.
    In containers
    They are not well suited for long term container growth due to their height, but can be kept in large tubs for several years.

    Seed

    1. 1. Clean the pulp from the seed immediately after harvest.
    2. 2. Plant seeds in a moist, well draining potting mix.
    3. 3. Maintain a temperature of at least 25 Celsius for germination.
    4. 4. Keep the soil consistently wet until sprouts appear.

    Group these palms with other moisture loving tropical plants to create a microclimate that retains high humidity.

    Grows well with

    • Heliconia · They share similar moisture and shade requirements in a tropical garden.
    • Ginger · These plants thrive in the same humid, rich soil conditions.

    Similar species

    • Cabbage Palm · It is a closely related palm that also produces edible fruit.

    Science

    Family
    Arecaceae
    Genus
    Euterpe
    Order
    Arecales
    Class
    Liliopsida
    Native range
    Northern South America and the Amazon basin.
    Conservation
    It is widely cultivated and not currently threatened in its native range.

    It is a flood tolerant species that dominates swampy areas and riverbanks in tropical rainforests.

    Value to wildlife
    nectar source, fruit source for birds
    Pollinators
    bees, beetles
    Uses
    culinary fruit pulp, ornamental landscaping, heart of palm harvest

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    2/9
    Soil reaction
    5/9
    Light
    7/9
    Temperature
    9/9
    Moisture
    9/9
    Nutrients
    6/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Can I grow açaí in a pot?
    It is difficult due to their massive size, but they can be kept in very large containers while young.
    How long until it fruits?
    Plants typically begin producing fruit within 4 to 5 years from seed.

    Where the name comes from

    The genus name Euterpe honors one of the Greek Muses, while oleracea refers to its use as a vegetable.

    Good to know

    • Açaí palms naturally grow in clumps of several stems.
    • The name açaí comes from the Tupi word for fruit that cries or expels water.
    • These palms thrive in waterlogged soils where other plants struggle.

    Keep your acai palm growing

    This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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    This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.