Grevillea banksii

Red Spider Flower

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A striking Australian shrub with distinctive red spider-like flowers and needle-like foliage. Thrives in sunny spots requiring well-draining acidic soil for optimal growth and flowering performance.
yard Outdoor plants wb_sunny Sun pets Not pet-safe
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Plant Details

Common Name Red Spider Flower
Family Proteaceae
Genus Grevillea
Species Banksii
Origin Australia
Blooming Spring to Summer, occasionally year-round in warm climates
Leaf Color Grey-green to deep green
Sunlight Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Acidic, well-draining sandy loam or specialized Proteaceae mix with perlite and pumice.

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Watering

Allow soil to dry between waterings. Drought tolerant once established. Reduce watering significantly in winter dormancy.

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Sunlight & Care

Requires full sun exposure for best flowering. Indoors, place in a south-facing window or under strong grow lights to prevent legginess.

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Fertilization

Apply low-phosphorus fertilizer monthly during growing season (Spring/Summer). Avoid high phosphorus which harms Proteaceae roots.

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Pruning

Prune after flowering to maintain shape and encourage bushiness. Remove dead branches promptly.

Pest Control Aphid Scale Insect Thrip

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 6 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
50° – 90°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 60%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
5000 – 25000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
2000 – 3500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
20% – 50%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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