Pineapple

Ananas comosus (L.) Merr., 1917

Also known / common namesSpanish – Piña, Ananá; Bribri – Bëtchï; Cabécar – Íka

Pineapple(s) General Description

Robust, terrestrial bromeliad forming a tight rosette 60 – 150 cm tall. Leaves 50 – 120 cm long, linear‑lanceolate, waxy‑blue‑green with coarse marginal spines; leaf bases overlap to create a water‑holding tank. The terminal inflorescence bears 50 – 200 purple‑violet flowers subtended by red‑tipped bracts; post‑pollination, individual berries fuse into a single multiple fruit (syncarp) 10 – 30 cm long and 0.5 – 4 kg. Crown of leafy “slips” develops atop the fruit. Stem short and fibrous; adventitious roots arise along its length. Wild types exhibit stronger spination and smaller fruits; cultivated clones vary in flesh colour from pale‑yellow to deep‑gold.

Has Sexual Diamorphism?

LIFE‑HISTORY & VITAL STATISTICS OF THE Pineapple(S)

Average Height / Length / Diameter

Plant 0.6 – 1.5 m tall; rosette Ø 1 m

Average Adult Weight / Mass

Fruit 0.5 – 4 kg (cultivar dependent)

Typical Lifespan / Longevity

 Individual plant 2 – 3 yr; ratoon cycle 4–5 yr

Typical Lifespan / Longevity for males

Typical Lifespan / Longevity for Females

Not applicable (monoecious)

Age at Sexual Maturity

Flower induction at 12 – 18 mo under tropical conditions

Breading Season

Commercial flowering induced year‑round; natural peak late dry season

Gestation

Fruit maturation 5 – 6 mo after flowering

Reproductive Outcome

Ecology and Behaviour for Pineapple(s)

Robust, terrestrial bromeliad forming a tight rosette 60 – 150 cm tall. Leaves 50 – 120 cm long, linear‑lanceolate, waxy‑blue‑green with coarse marginal spines; leaf bases overlap to create a water‑holding tank. The terminal inflorescence bears 50 – 200 purple‑violet flowers subtended by red‑tipped bracts; post‑pollination, individual berries fuse into a single multiple fruit (syncarp) 10 – 30 cm long and 0.5 – 4 kg. Crown of leafy “slips” develops atop the fruit. Stem short and fibrous; adventitious roots arise along its length. Wild types exhibit stronger spination and smaller fruits; cultivated clones vary in flesh colour from pale‑yellow to deep‑gold.

Habitat

Predominantly active during Day

Trophic Chain

Primary producer; inflorescences supply nectar to hummingbirds and native bees; ripe fruit eaten by agoutis, coatis and parrots, aiding seed dispersal in non‑commercial stands.

Interespecies relationships noted for Pineapple

Mutualism + / +

Long‑tongued hummingbirds pollinate pineapple flowers while feeding on nectar—fruit set increases, birds gain energy.

Symbiosis + / +

Arbuscular mycorrhizal fungi (Rhizophagus spp.) colonize roots, enhancing phosphorus uptake; fungi receive photosynthate.

Commensalism + / 0

Leaf axil tanks supply drinking water to green anoles (Anolis biporcatus); plant structure is unaffected.

Inquilinism + / 0

Mosquito larvae (Wyeomyia spp.) develop exclusively within pineapple phytotelmata, gaining habitat; no impact on plant.

Phoresy + / 0

Decomposing pineapple stems are used by orchid bees (Euglossa spp.) as nesting substrate after harvest.

Parasitism + / –

Mealybugs (Dysmicoccus brevipes) and the fungus Phytophthora nicotianae feed on sap/roots, causing “mealybug wilt” and heart rot.

Predation + / –

White‑faced capuchins shred ripe fruit for pulp, destroying seeds; collared peccaries uproot whole plants to eat the core.

Amensalism 0 / –

Bromelain‑rich leaf litter inhibits germination of nearby herbaceous seedlings without affecting pineapple.

Competition – / –

Competes with aggressive C‑4 grasses (Imperata cylindrica) for nitrogen and light in abandoned fields, lowering both species’ growth rates.

Social behaviour of Pineapple

“Social” Traits & Reproductive Behaviour

  • Reproductive strategy: each plant produces a single terminal inflorescence holding 50 – 200 bisexual flowers. In wild or land‑race stands, flowers are pollinated primarily by hummingbirds (Phaethornis, Chlorostilbon spp.) and native stingless bees; commercial plantations often suppress pollinators to avoid seed formation.

  • Floral biology: exhibits partial self‑incompatibility; protogynous phase lasts ~12 h before anthers dehisce.

  • Vegetative propagation: farmers detach slips, suckers and crowns from the mother plant, creating clonal “social clusters” (ratoon cycles).

  • Phenology: natural flowering peaks in the late dry season; industrial farms apply ethylene (ethephon) to synchronize bloom.

  • Axil micro‑ecosystems: overlapping leaves form water‑holding tanks (phytotelmata) that host diverse aquatic invertebrates and provide hydration sites for tree frogs.

Distribution and Sighthings ofPineapple(s) in Costa Rica

General Regions of Costa Rica where to find Pineapples

Tropical
Seasonal dry forest (Guanacaste)
Tropical rainforest (Caribbean and North Pacific slopes)

National Parks and Reserves of Costa Rica where to find Pineapples

Parque Nacional Tenorio

Best Time to seePineapple(s) in Costa Rica

Dry Season
January
February
March
April
June
July
August
September
October
November
December

Media

Videos

Sounds and calls

Taxonomy

Conservation Status

Status IUCN

Threats

⚠️Monoculture expansion causing soil erosion, pesticide runoff and genetic erosion of heirloom varieties.
⚠️Phytophthora heart rot and mealybug wilt complex reducing yields and threatening smallholder livelihoods.
⚠️Climate‑driven shifts in rainfall patterns altering flowering induction cues.
⚠️Public backlash against agro‑chemical use may reduce pollinator diversity essential for seed‑bank conservation.

Fun Facts

  • The pineapple “fruit” is a multiple fruit: 100–200 individual berries fused around a central axis.

  • Contains the proteolytic enzyme bromelain, used medically to reduce inflammation and to tenderise meat.

  • Christopher Columbus first encountered pineapple on Guadeloupe in 1493 and introduced it to Europe.

  • A ripe pineapple can contain up to 16 % sugar yet remains low on the glycemic index thanks to high fibre.

  • Traditionally a symbol of hospitality in the Caribbean; carved pineapples adorn colonial door‑knockers.

Origins & Record

Origin Status

Introduced

Population trend

Increasing

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