Jarrah
Eucalyptus marginata
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Description
Jarrah (Eucalyptus marginata) is a large evergreen tree native to the southwestern region of Western Australia, reaching heights of up to 40 meters. It plays a crucial role in agroecology and regenerative agriculture as a keystone species, providing habitat and food for a variety of wildlife, including birds and insects. Its deep root systems stabilize soil and prevent erosion, making it ideal for ecosystem restoration projects. Jarrah trees are particularly valued for their ability to thrive in nutrient-poor, sandy soils, and their canopy offers shade and microclimate benefits in food forest systems. Historically, Indigenous Australians have used Jarrah for tools and medicinal purposes. In a guild, Jarrah can be paired with nitrogen-fixing shrubs like Acacia species to enhance soil fertility.
Growing Details
Jarrah trees prefer well-drained, sandy soils with a slightly acidic to neutral pH. Mulching around the base helps retain moisture and suppress weeds. Companion planting with nitrogen-fixing plants like Acacia can improve soil fertility. Avoid overwatering young trees, as this can lead to root rot. Harvest Jarrah honey when flowers are in full bloom, typically in late spring. Store honey in a cool, dark place to preserve its quality.
Tags
Keystone Specie
Carbon Farming
Attracts Wildlife
Fire Wood
Building Wood
Windbreak
Erosion Preventing
Bee Friendly
Visual Appeal
Sweetener
Range (Based on GBIF Data)
The map shows known occurrence points of <strong>Eucalyptus marginata</strong> recorded in scientific biodiversity databases.
Source: <a href="https://www.gbif.org" target="_blank">GBIF.org</a> โ Global Biodiversity Information Facility
Location & Timing
native geo location: Southwestern Australia
applicable geo region: Australia
language used: en
Flowering:
beginning
of September for 90 days
Harvest:
?
Seed Start:
beginning
of September
Indoor Start:
Transplant:
Uses & Benefits
Edible Rating:
(2/5)
edible uses: Jarrah honey, derived from the nectar of its flowers, is highly prized for its unique flavor and medicinal properties. It is often used as a natural sweetener and in traditional remedies.
Medicinal Rating:
(4/5)
medicinal uses: Jarrah honey is renowned for its potent antibacterial properties, making it effective in wound care and as a natural remedy for sore throats and coughs. It is also used in skincare for its healing properties.
health concerns: While Jarrah honey is generally safe, individuals with allergies to bee products should exercise caution.
other uses: The wood of Jarrah is highly sought after for its durability and resistance to termites, making it ideal for flooring, furniture, and high-quality firewood due to its density and slow-burning properties.
Scientific Literature
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Botanical data
specie: Eucalyptus marginata
common names: Jarrah; Swan River mahogany; Western Australi
family: Myrtaceae
sub family:
tribe:
sub tribe:
genus: Eucalyptus
Growing Conditions
area needed: 10.0 m
spacing: 10.0 m
growing difficulty: High
Deciduous / Evergreen:
Seed Temp (Opt/Min/Max): 25ยฐC / 15ยฐC / 30ยฐC
Plant Temp (Opt/Min/Max): 20ยฐC / 10ยฐC / 35ยฐC
water demands: Low
humidity:
light demands: High
root type: Deep
frost tender: Medium
hardness:
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(9/10)
first harvest: 0 years
life span: 500 years
succession: Pioneer
growth rate: Slow
max height: 40.0 m
max width: 10.0 m
soil preference:
Poor Soil
pH preference:
Acid
flower type:
Hermaphrodite
growth details: Jarrah trees prefer well-drained, sandy soils with a slightly acidic to neutral pH. Mulching around the base helps retain moisture and suppress weeds. Companion planting with nitrogen-fixing plants like Acacia can improve soil fertility. Avoid overwatering young trees, as this can lead to root rot. Harvest Jarrah honey when flowers are in full bloom, typically in late spring. Store honey in a cool, dark place to preserve its quality.
Potential Disturbances: Jarrah is susceptible to Phytophthora cinnamomi, a soil-borne pathogen causing dieback. To manage this, ensure good drainage and avoid waterlogged conditions. Introduce beneficial fungi like Trichoderma to suppress pathogen growth. Use companion plants such as marigolds to deter soil-borne pests.
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