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Guía de plantas

Grass tree.

Xanthorrhoea preissii

Pronunciación zan-thor-REE-uh PREE-see-eye

También se conoce como Balga

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Grass tree
Foto de Millie Brady (CC BY) vía iNaturalist

This iconic Australian native is a slow growing plant that develops a thick, blackened trunk over many years. It produces a tall, dramatic flower spike that can reach several feet in height. You will love how it adds a unique, architectural look to your garden.

Otra foto de Grass tree
Foto de Rob Beattie (CC BY) vía gbif

De un vistazo

Nivel de cuidados
Media
Tipo de planta
Perennial shrub
Luz
Full sun
Luz en interior
Sol directo
Riego
Cada 14 a 30 días
Tamaño adulto
3 to 5 meters
Ritmo de crecimiento
Lento
Rusticidad
USDA 9 a 11
Floración
Winter to spring

Cuidados

Ensure the soil drains exceptionally well to prevent root rot, as these plants are very sensitive to excess moisture. Watch for yellowing leaves or a soft trunk, which are clear signs of overwatering. They thrive best when left undisturbed in a sunny spot.

Riego
Water sparingly, allowing the soil to dry out completely between sessions.
Abonado
Use a low phosphorus native plant fertilizer during the growing season.
Poda
Only remove dead, brown leaves from the base of the crown.
Trasplante
These plants dislike root disturbance, so only repot when absolutely necessary.
Suelo
Sandy, well draining soil
pH del suelo
Acidic to neutral
Temperatura
-5 a 40°C
Humedad
20 a 60%
Tolerancia a la sequía
Alta
Longevidad
Perennial, can live for several hundred years.
Fragancia
Suave
Resistencia a ciervos y conejos
Alta

Señales de que necesita trasplante

  • Roots growing out of the drainage holes.
  • Water sitting on the surface for too long.
  • The plant appears stunted or stops growing.

Seguridad

Personas
The resin is generally considered non-toxic, but ingestion is not recommended.
Niños
The stiff, needle-like leaves are sharp and pose a puncture risk to small children.
Alérgenos por contacto
The sharp, stiff leaf tips can cause mechanical skin irritation.
Alérgenos en el aire
The pollen produced during flowering can trigger mild allergic reactions in sensitive individuals.
Comestibilidad
The plant is not considered edible and should not be consumed.

Cómo identificarla

  • Long, thin, grass like leaves
  • Thick, blackened, resinous trunk
  • Tall, cylindrical flower spikes
  • Dense, rounded foliage crown
Altura
1,5 a 3m
Anchura
1 a 2m
Hojas
green, blue-green, evergreen
Flores
cream, white, 1 a 2cm
Frutos
brown, Summer

Problemas frecuentes

  • Root rot — Fungal decay caused by overly wet soil conditions.

Cómo cultivarla

Propagación
seed
Cuándo plantar
spring, autumn
Cuidados en invierno
Ensure the plant is kept in a frost-free environment if temperatures drop below freezing. Keep the soil very dry during the winter months to prevent rot.
En maceta
It can be grown in large, deep pots with excellent drainage, but prefers being planted in the ground.

Seed propagation

  1. 1. Collect mature seeds from the dry flower spike.
  2. 2. Sow seeds in a well-draining sandy potting mix.
  3. 3. Keep the soil lightly moist until germination occurs.
  4. 4. Transplant seedlings carefully once they are large enough to handle.

Group with other drought-tolerant Australian natives to ensure consistent water needs.

Buenas compañeras

  • Banksia — They share similar requirements for well-draining, nutrient-poor soil.
  • Anigozanthos — They provide a striking textural contrast in dry, sunny gardens.

Especies parecidas

  • Xanthorrhoea australis — It is a closely related species with a similar growth habit and appearance.

Ciencia

Familia
Asphodelaceae
Género
Xanthorrhoea
Orden
Asparagales
Clase
Liliopsida
Distribución natural
Southwestern Australia
Conservación
This species is protected in its native range and wild collection is strictly regulated.

It is a fire-adapted species that relies on periodic burning to clear competition and stimulate flowering.

Valor para la fauna
nectar source, habitat for insects
Polinizadores
abejas, mariposas, escarabajos
Usos
ornamental specimen, xeriscaping, coastal garden

A lo largo del año

EFMAMJJASOND
Floración
Fructificación
Follaje

Indicadores ecológicos

Salinidad
4/9
Reacción del suelo
5/9
Luz
8/9
Temperatura
7/9
Humedad
2/9
Nutrientes
1/9

Taxonomía cotejada con GBIF.

Lo que más preguntan

How fast does it grow?
It is extremely slow, growing only 1 to 2 centimeters of trunk per year.
Does it need fertilizer?
It is adapted to nutrient-poor soils and generally does not require supplemental feeding.

De dónde viene el nombre

The genus name comes from the Greek words for yellow and flow, referring to the resin. The specific epithet honors the German botanist Ludwig Preiss.

Bueno saberlo

  • It is commonly known as a grass tree.
  • The trunk is actually a dense accumulation of old leaf bases and resin.
  • It often flowers more prolifically following a bushfire.
  • The resin was historically used as a glue by Indigenous Australians.

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Esta guía se ha generado con IA y se ha cotejado con la taxonomía de GBIF. Es información general, no asesoramiento botánico ni veterinario. Descubre cómo elaboramos estas guías.