Eucalyptus erythrocorys
Images by part: leaf (0) · flower (1) · fruit (3) · bark (0) · habit (0) · other (0)

Eucalyptus erythrocorys

Bookara gum · Red-cap gum · Illyarrie

Tier 1 Difficulty: easy Water: low Light: full_sun
Temperature
20–37 °C
Soil pH
6–8
Hardiness
Zone 9–11
Click count
17
Observations
20

Description

Source: leafsnap

Eucalyptus erythrocorys, commonly known as illyarrie, red-capped gum or helmet nut gum, is a species of tree or mallee from Western Australia. It has smooth bark, sickle-shaped to curved adult leaves, characteristically large flower buds in groups of three with a bright red operculum, bright yellow to yellowish green flowers and sculptured, bell-shaped fruit.

Care Guide

💧 Water

Illyarrie, native to Australia's arid regions, is highly drought-tolerant and should be watered weekly to prevent soil saturation. It thrives in dry conditions and maintains lush foliage even with little rainfall, making it ideal for xeric landscapes.

☀️ Light Full sun

Illyarrie comes from open habitats, like sunny meadows and the edges of forests, which offer abundant light. It performs best in Full Sun but can tolerate Partial Sun, adjusting well to different light conditions.

Ideal: Full sun
FAQ
What are the sun requirements for Illyarrie (Eucalyptus erythrocorys)?

Illyarrie, known botanically as Eucalyptus erythrocorys, thrives under specific sunlight conditions to ensure its health and growth. It requires full sun exposure, which means it needs to be in a spot that receives more than 6 hours of direct sunlight daily. However, it can also grow in partial sun locations, where it would get about 3-6 hours of sunlight each day. It's important to observe the way sunlight moves through your garden throughout the day. This will help you find a spot that offers the right balance of light and shade, assuring that your Illyarrie remains healthy and happy.

🌡️ Temperature 20–37.8°C

Illyarrie adapts well to temperature, able to endure higher heat and wider temperature fluctuations. In hot weather, attention should be paid to irrigation and providing suitable shade to avoid sunburn. However, Illyarrie is fairly sensitive to low temperatures. While it can tolerate some cold, overly frigid conditions may cause frost damage.

Ideal temperature: 20–37.8°C
FAQ
What is Illyarrie?

Illyarrie, known botanically as Eucalyptus erythrocorys, is a type of Eucalyptus.

💨 Humidity
Humidity:
🪴 Soil 6-8
Soil pH: 6-8
🌱 Fertilizer

The timing of fertilizing Illyarrie is critical. Begin fertilizing in early spring and continue once a month until early summer. Fertilizer promotes attractive blooms and supplies energy during both dormant and active growth periods.

🪴 Pot & Repot
✂️ Pruning

Illyarrie is known for its striking red-capped flowers and aromatic foliage. To encourage growth and blooming, it's important to prune the plant from early to late winter. Key pruning techniques include removing dead branches, thinning to improve airflow, and shaping young plants. Pruning not only enhances flowering but also helps prevent disease, making it an essential task for gardeners.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Tree
Life Cycle
Perennial
Genus
Eucalyptus
Family
Myrtaceae
Hardiness Zone
9-11
Mature Height
20.12 m
Mature Spread
7.92 m
Leaf Color
Dark Green, Gray
Leaf Type
Evergreen
Flower Color
Red, Yellow
Flower Size
4.06 cm to 5.08 cm
Bloom Time
Mid winter, Late winter, Early spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Mid spring, Late spring, Early summer

Tags (7)

Common Names (3)

en Bookara gum
en Red-cap gum
en Illyarrie