Giant sequoia.

En un coup d'œil

Niveau d'entretien

Moyenne

Type de plante

Conifer

Lumière

Full sun

Lumière en intérieur

Soleil direct

Arrosage

Tous les 7 à 14 jours

Taille adulte

250 feet

Croissance

Rapide

Rusticité

USDA 6 à 9

Floraison

Late spring

Entretien

Plant in deep, well draining soil and ensure the tree has plenty of room for its roots to spread. Watch for signs of drought stress like browning needles during hot, dry summers. Provide consistent moisture while the tree is young to help it establish a strong root system.

Arrosage

Keep the soil consistently moist but not waterlogged, especially during the first few years of growth.

Engrais

Apply a balanced, slow release fertilizer in early spring to support healthy growth.

Taille

Pruning is rarely needed, but you can remove dead or damaged branches in late winter.

Rempotage

These trees are generally grown outdoors, but if kept in containers, repot them every few years until they are ready for the ground.

Sol

Deep, moist, well draining soil

pH du sol

5.5 to 7.5

Température

-25 à 35°C

Humidité

40 à 70%

Sécurité

Humains

The plant is not considered toxic to humans.

Enfants

The large, heavy cones can pose a falling hazard if children are playing directly beneath the tree.

Allergènes de contact

The rough, fibrous bark can cause minor skin irritation if handled without gloves.

Allergènes aéroportés

Pollen may cause mild seasonal allergies in sensitive individuals.

Comestibilité

The foliage and cones are not considered edible for humans.

Comment l'identifier

• Massive, reddish brown fibrous bark
• Awl shaped, blue green needles
• Small, egg shaped woody cones
• Conical shape when young
• Extremely thick, fire resistant trunk

Hauteur

15 à 80m

Envergure

5 à 20m

Feuilles

blue-green, dark green, evergreen

Fleurs

yellow, 0,5 à 1cm

Fruits

brown, Autumn

Problèmes courants

• Botryosphaeria canker — A fungal infection that causes branch dieback and lesions on the bark.
• Spider mites — Tiny pests that suck sap from needles, causing yellowing and webbing.

La cultiver

Multiplication

seed

Quand planter

spring, autumn

Plant in large open spaces to allow for the massive root system to spread without damaging structures.

Bonnes associations

• Abies concolor — They naturally occur together in mixed conifer forests.
• Pinus lambertiana — This pine shares the same habitat requirements and ecological niche.

Espèces similaires

• Sequoia sempervirens — It is a related giant conifer that prefers coastal fog rather than mountain snow.
• Séquoia d'eau — It is a deciduous relative that is much smaller and more suitable for home gardens.

Science

Famille

Cupressaceae

Genre

Sequoiadendron

Ordre

Pinales

Classe

Pinopsida

Région d'origine

Western slopes of the Sierra Nevada mountains in California.

Préservation

This species is listed as endangered in its native range due to habitat loss and climate change.

They thrive in mountain climates with deep, well-drained soils and regular winter snowpack.

Intérêt pour la faune

nesting habitat, cover for small mammals

Pollinisateurs

abeilles

Utilisations

ornamental specimen, timber, reforestation

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Can I grow a giant sequoia in a small garden?

No, they require significant space to reach their massive mature size.

How fast do they grow?

They grow relatively quickly when young but slow down as they age.

D'où vient le nom

The genus name honors Sequoyah, the creator of the Cherokee syllabary, while the species name refers to its immense size.

Bon à savoir

• Their bark can be up to two feet thick to protect against fire.
• They rely on fire to open their cones and release seeds.
• They can live for over 3,000 years.
• They are the most massive trees on the planet by volume.