Saguaro.

En un coup d'œil

Niveau d'entretien

Moyenne

Type de plante

Succulent

Lumière

Full sun

Lumière en intérieur

Soleil direct

Arrosage

Tous les 14 à 30 jours

Taille adulte

40 to 60 feet

Croissance

Lente

Rusticité

USDA 9 à 11

Floraison

Late spring to early summer

Entretien

Provide as much direct sunlight as possible to mimic their natural desert habitat. Ensure the soil drains extremely well to prevent root rot, which is the most common cause of failure. Watch for soft spots on the stem, as these indicate the plant is holding too much moisture.

Arrosage

Water deeply during the summer growing season, but let the soil dry out completely between waterings.

Engrais

Apply a low nitrogen cactus fertilizer sparingly during the active growing months.

Taille

Pruning is rarely needed, but you can remove dead or damaged tissue with a sterilized blade.

Rempotage

Repot only when the plant becomes top heavy or clearly outgrows its container.

Sol

Sandy, rocky, well draining cactus mix

pH du sol

6.0 to 7.5

Température

-7 à 45°C

Humidité

10 à 40%

Sécurité

Humains

The plant is not toxic, but its sharp spines pose a significant physical injury risk.

Enfants

Keep children away from the plant to prevent severe injury from the long, sharp spines.

Allergènes de contact

The sharp spines can cause skin punctures and irritation.

Allergènes aéroportés

The pollen may cause mild allergic reactions in sensitive individuals.

Comestibilité

The fruit is edible, but harvesting from wild plants is strictly prohibited and illegal.

Comment l'identifier

• Tall, columnar, ribbed green stem
• Sharp spines along vertical ribs
• Large, white, nocturnal blooming flowers
• Develops characteristic arm branches with age

Hauteur

3 à 12m

Envergure

1 à 3m

Feuilles

green, evergreen

Fleurs

white, 7 à 12cm

Fruits

red, Summer

Problèmes courants

• Bacterial necrosis — A bacterial infection that causes soft, mushy rot in the stem tissue.

La cultiver

Multiplication

seed

Quand planter

spring, summer

Plant young saguaros near nurse plants to protect them from extreme sun and frost during their early years.

Bonnes associations

• Encelia farinosa — It provides light shade for young saguaros in the wild.
• Parkinsonia microphylla — This tree acts as a nurse plant for young cacti.

Espèces similaires

• Stenocereus thurberi — It shares a similar desert habitat but has a different branching habit.

Science

Famille

Cactaceae

Genre

Carnegiea

Ordre

Caryophyllales

Classe

Magnoliopsida

Région d'origine

Sonoran Desert in Arizona and Mexico.

Préservation

The saguaro is protected by law in its native habitat, and wild collection is strictly prohibited.

It survives by storing vast amounts of water in its pleated stem to endure long periods of drought.

Intérêt pour la faune

nectar source, nesting site

Pollinisateurs

abeilles, papillons, papillons de nuit, colibris

Utilisations

ornamental, wildlife habitat

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Can I grow a saguaro in a pot?

Yes, they grow slowly in containers but require excellent drainage and intense light.

How often should I water it?

Water sparingly during the growing season and keep it completely dry in winter.

D'où vient le nom

The genus honors Andrew Carnegie, while the species name refers to its massive size.

Bon à savoir

• Saguaro cacti can live for over 150 years.
• They do not grow their first arm until they are 75 to 100 years old.
• A mature saguaro can weigh several tons after absorbing heavy rainfall.
• The white flower is the state wildflower of Arizona.