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Guide botanique

Guava.

Psidium guajava

Prononciation SID-ee-um GWAH-hah-vah

Aussi appelée Guava, Guava Tree, Guava, Common guava, Yellow guava, Lemon guava, Guave Tree, Guyaba, abas

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Guava
Photo de Daniel Dias (CC BY-SA) via iNaturalist

The guava is a tropical evergreen tree prized for its sweet, fragrant fruit and attractive, peeling bark. It thrives in warm climates and makes a lovely addition to a sunny garden or a large container. You will love watching it produce beautiful white flowers followed by delicious fruit.

Une autre photo de Guava
Photo de Damien Wallace (CC0) via gbif

En un coup d'œil

Niveau d'entretien
Moyenne
Type de plante
Tropical fruit tree
Lumière
Full sun
Lumière en intérieur
Soleil direct
Arrosage
Tous les 3 à 7 jours
Taille adulte
10 to 30 feet
Croissance
Rapide
Rusticité
USDA 9 à 11
Floraison
Late spring to early summer

Entretien

Keep the soil consistently moist but never waterlogged to ensure healthy growth. Watch for yellowing leaves which can indicate overwatering or nutrient deficiencies. Provide plenty of warmth and sunshine to help your tree produce the best fruit.

Arrosage
Water deeply whenever the top inch of soil feels dry to the touch.
Engrais
Apply a balanced fertilizer every two months during the active growing season.
Taille
Prune once a year after harvest to maintain shape and encourage fruit production.
Rempotage
Repot young trees every year or two until they reach their desired size.
Sol
Well draining loamy soil
pH du sol
5.0 to 7.0
Température
5 à 35°C
Humidité
50 à 80%
Résistance à la sécheresse
Moyenne
Durée de vie
Perennial, typically 20 to 40 years
Parfum
Fort
Résistance aux chevreuils et lapins
Moyenne

Signes qu'il faut rempoter

  • Roots growing out of the drainage holes.
  • Water running straight through the pot without soaking in.
  • Stunted growth despite regular feeding.

Sécurité

Humains
The plant is generally considered non-toxic, though excessive consumption of leaves or bark may cause mild stomach irritation.
Enfants
The fruit contains small, hard seeds that pose a potential choking hazard for very young children.
Allergènes de contact
The leaves have a slightly rough texture that may cause minor skin irritation in sensitive individuals.
Allergènes aéroportés
Pollen from the flowers can trigger mild hay fever symptoms in susceptible people during the bloom period.
Comestibilité
Ensure fruit is fully ripe before consumption to avoid potential digestive upset from unripe flesh.

Comment l'identifier

  • Smooth, peeling reddish brown bark
  • Opposite, oval shaped green leaves
  • Prominent veins on leaf undersides
  • Fragrant white flowers with many stamens
  • Round or pear shaped edible fruit
Hauteur
3 à 6m
Envergure
3 à 6m
Feuilles
green, evergreen
Fleurs
white, 2 à 4cm
Fruits
yellow, green, pink, white, Late summer to winter

Problèmes courants

  • Guava fruit fly — Larvae tunnel into the fruit, causing premature drop and rot.
  • Anthracnose — Fungal infection causing dark, sunken spots on leaves and fruit.

La cultiver

Multiplication
seed, cuttings, air layering
Quand planter
spring
Hivernage
Move container plants indoors before the first frost. In the ground, cover young trees with frost cloth if temperatures dip near freezing.
En pot
It grows well in containers, provided you use a pot at least 50 liters in size with excellent drainage.

Seed

  1. 1. Clean seeds from fresh fruit pulp.
  2. 2. Soak seeds in warm water for 24 hours.
  3. 3. Plant in well-draining seed starting mix.
  4. 4. Keep warm and moist until germination.

Planting aromatic herbs beneath the canopy can help confuse pests that target the fruit.

Bonnes associations

  • Basil — Its strong scent helps mask the tree from certain pests.
  • Souci — These help deter soil nematodes that can affect the roots.

Espèces similaires

  • Psidium cattleyanum — A smaller, hardier relative with similar fruit characteristics.

Science

Famille
Myrtaceae
Genre
Psidium
Ordre
Myrtales
Classe
Magnoliopsida
Région d'origine
Tropical Americas
Préservation
This species is widely cultivated and not considered threatened in its native range.

It thrives in sunny, frost-free environments and spreads easily through seeds dispersed by birds and mammals.

Intérêt pour la faune
nectar source, provides food for birds
Pollinisateurs
abeilles, papillons
Utilisations
culinary fruit, ornamental tree, traditional medicine

Au fil des saisons

JFMAMJJASOND
Floraison
Fructification
Feuillage

Repères écologiques

Salinité
2/9
Réaction du sol
6/9
Lumière
8/9
Température
8/9
Humidité
6/9
Nutriments
6/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

How do I know when a guava is ripe?
The fruit is ripe when it yields slightly to pressure and emits a sweet, fragrant aroma.
Can I grow guava in a pot?
Yes, dwarf varieties perform well in large containers with proper pruning.

D'où vient le nom

The genus name Psidium comes from the Greek word psidion, meaning pomegranate, while guajava is derived from the Arawak word for the fruit.

Bon à savoir

  • Guavas are native to tropical regions of the Americas.
  • The wood is very dense and is sometimes used for smoking meats.
  • Guava leaves are often brewed into a tea to help with digestive issues.
  • The tree has beautiful, smooth, peeling bark that reveals different colors underneath.

Ta plante a mauvaise mine ?

Cette page est un guide général. Pocket Botanist diagnostique les problèmes directement à partir d'une photo de ta plante, adapte l'arrosage à sa luminosité et te prévient quand il faut t'en occuper.

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Ce guide a été généré par IA et vérifié avec la taxonomie du GBIF. Il s'agit d'informations générales, et non de conseils horticoles ou vétérinaires. Découvre comment nous concevons ces guides.