Protea cynaroides Red Rex

King Protea 'Red Rex'

WhatsApp
Striking shrub with large crimson flower heads and grey-green foliage. Native to South African fynbos, requires well-drained acidic soil.
yard Outdoor plants wb_sunny Sun pets Not pet-safe
info

Plant Details

Common Name King Protea 'Red Rex'
Family Proteaceae
Genus Protea
Species Protea Cynaroides
Variety Red Rex
Origin South Africa
Blooming Winter to Spring, large flower heads with red bracts
Leaf Color Grey-green / Silvery-grey
Sunlight Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Sandy, acidic, low nutrient soil (calcifuge). Mix with coarse perlite for drainage.

water_drop
Watering

Water deeply but infrequently. Allow soil to dry out completely between waterings. Sensitive to root rot.

light_mode
Sunlight & Care

Requires full sun exposure. Not suitable for deep shade indoors unless supplemented with grow lights.

science
Fertilization

Low phosphorus fertilizer only. Apply sparingly in spring during active growth phase.

content_cut
Pruning

Prune after flowering to maintain shape. Remove spent flower heads to prevent seed set.

Pest Control Aphid Psyllid Scale Insect

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

calendar_month

Seasonal Periods

local_florist Flowering Period 5 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
41° – 95°
Fahrenheit
Ideal ambient air temperature range for healthy growth
water_drop
Humidity
25% – 70%
% relative
Optimal relative air humidity the plant thrives in
light_mode
Light (LUX)
2500 – 60000
Lux
Ambient illuminance level at the plant's surface
wb_sunny
Light (PAR)
800 – 5000
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
10% – 40%
% volumetric
Water content in the growing medium
bolt
Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

Related Plants

You might also like these plants

Browse All ›
Protea cynaroides
parkOutdoor plants
Protea cynaroides

King Protea

account_treeProteaceae location_onSouth Africa

info Price unavailable

Protea cynaroides white
parkOutdoor plants petsPet friendly
Protea cynaroides white

White King Protea

account_treeProteaceae location_onSouth Africa (Western Cape)

info Price unavailable

Protea cynaroides Venus
parkOutdoor plants
account_treeProteaceae location_onSouth Africa (Western Cape)

info Price unavailable

Protea Red Repens
parkOutdoor plants
Protea Red Repens

Red Sugarbush

account_treeProteaceae location_onSouth Africa

info Price unavailable

favorite