Marri
Corymbia calophylla
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Description
Corymbia calophylla, commonly known as Marri, is a significant tree native to the southwest of Western Australia. It plays a crucial role in agroecological systems as a keystone species, providing habitat and food for a wide range of wildlife. Marri trees can reach up to 60 meters in height and are characterized by their rough, fibrous bark and large, urn-shaped fruit known as 'honky nuts'. The tree is particularly valued for its ability to stabilize soil and improve biodiversity, making it an excellent choice for ecosystem restoration projects. Its flowers, which bloom from December to May, are a vital nectar source for bees and other pollinators, supporting biodiversity. In regenerative agriculture, Marri serves as a windbreak, provides shade, and contributes to microclimate regulation. Historically, Indigenous Australians have utilized various parts of the tree for food and medicinal purposes.
Growing Details
Marri trees thrive in well-drained, sandy to loamy soils with a slightly acidic to neutral pH. Prior to planting, enrich the soil with organic matter such as compost to improve fertility. Mulching around the base helps retain moisture and suppress weeds. Companion plants like Acacia species can enhance soil fertility through nitrogen fixation. Avoid planting in areas prone to waterlogging. Harvest seeds when the fruit is mature and dry, typically in late summer. Store seeds in a cool, dry place
Edible Parts
Seed
Sap
Nectar
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>Corymbia calophylla</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: Southwest of Western Australia
applicable geo region: Australia
language used: en
Flowering:
beginning
of December for 150 days
Harvest:
beginning
of March for 180 days
Seed Start:
beginning
of September
Indoor Start:
Transplant:
Uses & Benefits
Edible Rating:
(2/5)
edible uses: The sap of Marri can be fermented to create a sweet drink. Indigenous Australians have traditionally consumed the seeds, which are available seasonally. The nectar is also edible and can be used as a natural sweetener.
Medicinal Rating:
(3/5)
medicinal uses: Marri gum has been traditionally used by Indigenous Australians for its antiseptic properties and to treat wounds and sores. It can be applied directly to the skin or used in poultices.
health concerns: Consumption of seeds should be moderate due to potential tannin content.
other uses: The wood of Marri is prized for furniture and flooring due to its durability and attractive grain. It is also used as firewood. The tree's presence in landscapes enhances biodiversity and provides critical habitat for native species.
Scientific Literature
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Botanical data
specie: Corymbia calophylla
common names: Marri; Red Gum; Eucalyptus calophylla
family: Myrtaceae
sub family:
tribe:
sub tribe:
genus: Corymbia
Growing Conditions
area needed: 10.0 m
spacing: 10.0 m
growing difficulty: High
Deciduous / Evergreen:
Seed Temp (Opt/Min/Max): 20ยฐC / 15ยฐC / 25ยฐC
Plant Temp (Opt/Min/Max): 20ยฐC / 5ยฐC / 35ยฐC
water demands: Medium
humidity:
light demands: High
root type: Deep
frost tender: Medium
hardness:
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(9/10)
first harvest: 3650 years
life span: 200 years
succession: Pioneer
growth rate: Medium
max height: 60.0 m
max width: 10.0 m
soil preference:
Medium (Loam)
pH preference:
Neutral
flower type:
Hermaphrodite
growth details: Marri trees thrive in well-drained, sandy to loamy soils with a slightly acidic to neutral pH. Prior to planting, enrich the soil with organic matter such as compost to improve fertility. Mulching around the base helps retain moisture and suppress weeds. Companion plants like Acacia species can enhance soil fertility through nitrogen fixation. Avoid planting in areas prone to waterlogging. Harvest seeds when the fruit is mature and dry, typically in late summer. Store seeds in a cool, dry place
Potential Disturbances: Marri is generally resilient but can be affected by psyllids and lerps. Encourage natural predators like ladybugs and lacewings to manage these pests. Planting aromatic herbs such as rosemary or lavender nearby can help repel insects. Neem oil can be used as an organic spray to deter infestations.
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