Facts about Bunya Nuts ~ Araucaria bidwillii

Plant Description

Bunya nuts is a large, evergreen, broadleaf, coniferous tree that normally grows about 45 meters (about 148 feet) tall, a diameter of 1.5 meters (around 4 feet), and a spread of 15 meters (49 feet) wide. The tallest presently living is one in Bunya Mountains National Park, Queensland which was reported by Robert Van Pelt in January 2003 to be 169 feet (51.5 m) in height. These softwood trees have horizontal branches which are evenly spaced and arranged in regular tiers till the apex of the tree. The thick and sturdy trunk is very straight and is brown to black in color. The trunk is often said to resemble the leg of an elephant or a dinosaur in appearance. The bark of the tree varies between dark brown to black. The thickness of the bark ranges from 5 to 10 cm (2 to 4 inches) and deeply furrowed on mature trees. Bunya trees are characterized by its symmetrical dome shaped crown. The branches grow until they are long enough and eventually fall off as they get hit by a falling cone. Hence the tree retains a dome shaped profile. The branches below the dome do not reach the size of the crown branches.

Leaves

Like the trunk and branches, the leaves of the bunya pine are unusual. The leaves are up to 7 cm (3 in) long, narrow, lance-shaped on young trees, changing to triangular-shaped on older branches. These emerge lime green, become dark glossy green with age and are stiff, sharply pointed and near stalkless. They are spirally arranged along the branches and remain on the tree in all seasons.

Seed Cone

Seed cones usually appear in April and mature in between September or October about 17 months after pollination. Trees begin to bear cones at about 14 years of age. Bunya Pine usually bears female and male cones on the same tree. But as is common with many conifers, male and female cones tend to appear at different stages of the tree’s life. Usually, male cones appear first. Then, in middle-age, female cones appear too, and the tree commences fruiting. Fertile cones are dark green, ovoid-sub globose, 30 cm (12 in) long, 20 cm (8 in) wide, weighing up to 20 kg (44 lbs.), though are more typically 5 to 10 kg (11 to 22 lbs.). They take two to three years to reach maturity, at which time they self-detach and fall to the ground, landing with a bump.

It is dangerous to hang around under the bunya trees during their fruiting time as the ripe cones fall to the ground. Once the cones become ripe, they should be harvested and processed or kept frozen within a week. Inside the cone, the nuts are enclosed in a wooden shell. Boiling the nuts can help in removing the shell easily. Bunya nuts are nutritionally rich and offer several health benefits.

Nuts and Seeds

Each cone consists of 50-100 seeds that are about 1 inch (2.5 cm) long, elongate-elliptic, wingless and encased in a thin, tough, buff-colored protective shell, which will split when boiled or put in a fire. Once this is done, the seed coat or shell of the nut must be opened with a nutcracker or hammer to reveal the large and very tasty seed inside. The flavor of the kernel is similar to a chestnut. They are opened by large birds, such as cockatoos, or disintegrate when mature to release the large seeds or nuts.

Medicinal benefits

Research showed the results that extract of bunya nuts has anti-bacterial properties. Thus, bunya nuts have the ability to be used as an additional substance in foods that serve to slow the decay of foods that normally caused by bacteria. In addition, with these properties of bunya nuts may also be used to inhibit foodborne illness.

Instead of using chemical preservatives, people can start using these nuts to preserve food, because of their natural addictive properties. In the medical field, the anti-bacterial properties of bunya nuts may also be useful for use as antibiotic or anti-microbial agents. However the medicinal properties of the tree are unknown. Professional discussion is always suggested before using the plant medically.

Culinary Uses

• Seed can be consumed raw, cooked or ground into a powder.
• Starchy and delicious, it has the texture of a waxy boiled potato with the flavor of chestnuts.
• Germinating seed produces an underground ‘earth nut’ which has a coconut-like flavor.
• Nuts were additionally ground and made into a paste, which was eaten directly or cooked in hot coals to make bread.
• Nuts were also stored in the mud of running creeks, and eaten in a fermented state.
• When the nuts are boiled in water, the water turns red, making a flavorsome tea.
• Bunya nut is nowadays used as an ingredient in making a vast variety of dishes including casseroles, pies, quiches, pastas, pancakes, porridge, hummus, pesto, biscuits, desserts, cakes, and breads.

Different Uses

Bunya nuts have several uses which can be categorized into the following:

Edible Uses

Seeds of the bunya pine are edible. They are eaten raw, roasted or grounded into a powder. These nuts are an important source of food and a delicacy for the Aborigines of Australia. Its taste has a texture of chestnut and a boiled potato.

Functional Uses

Bunya nuts tree provides valuable timber for cabinets, wood makers and flooring. The soft wood of the bunya pine are in great demand for making acoustic guitar soundboards. The branches are used by the locals for fencing and fuel.

Service Uses

The tall bunya trees act as a wind breaker and also provide shade and shelter.

Ornamental Uses

The distinctive trees are placed as a decorative plant for parks, landscape, avenues and can also be used as a house plant.

Storing bunya nuts

Bunya nuts taste best when eaten fresh. However, if you want to store them, the ideal way is to freeze the nuts in their shells. Before putting the nuts in the refrigerator, you can store the nuts in a string bag and place the bag in a dry and well-aired place away from direct sunlight. This will help to prevent the growth of fungus. Storing the nuts inside the refrigerator keeps them fresh and prevents them from sprouting.

Method of preparing the bunya nut for cooking

Bunya nuts come in different sizes and shapes. While some are white, small and round, others are brown and oval in shape. The brown colored ones have a creamy texture and the white ones have a coarse texture. Bunyas fall to the ground when they are ready to harvest. If the cones are intact after hitting the ground, you need to break open the cone and separate the nuts from it. Unlike other nuts like the walnuts, the bunya nuts have a leathery and tough shell and will not break open easily. You may need to use tools like a cleaver or serrated knife to get the job done. Once the nuts are extracted, keep them in water for a few minutes to get rid of the thin brown skin. Boiling is the most recommended way of preparing the bunya nut, because other methods like frying and roasting may cause the flesh to dry out. The nuts need to be cooked for a good 30 to 45 minutes. Some people choose to boil them in brine, as this method tends to give the nuts a salty and savory taste.

Bunya Nuts Recipe

Charred Courgette, Bunya Nuts and Herbs

Ingredients

• 4 yellow courgettes
• 1/2 cup bunya nuts, roasted and chopped (or replace with pine nuts or almonds)
• 2 cups mixed herbs like parsley, mint, dill and whatever you like the flavour of
• 1 lemon

Directions

1. Slice the courgette lengthways about 5mm thick.
2. Drizzle with oil and cook on a really hot wood grill, chargrill or griddle-pan. Only cook on one side.
3. Once done place into a bowl with the bunya nuts or roast almonds.
4. Zest in the lemon rind then squeeze in the juice.
5. Add the herbs and a dash of good olive oil.
6. Season with salt and black pepper. Serve.

Other Facts

• Branches are used for fencing and fuel.
• Tallest presently living is one in Bunya Mountains National Park, Queensland which was reported by Robert Van Pelt in January 2003 to be 169 feet (51.5 m) in height.
• Indigenous Australians ate bunya shoots, and utilized the tree’s bark as kindling.
• Wood pulp is used for making paper.
• General purpose softwood is used in making plywood, interior joinery, flooring, linings, moldings, furniture and general, interior construction.
• Musical instruments, especially sought after for guitar soundboards.

References:

https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=506779#null

https://pfaf.org/user/Plant.aspx?LatinName=Araucaria+bidwillii

https://plants.usda.gov/core/profile?symbol=ARBI12

https://www.cabi.org/isc/datasheet/7151

https://landscapeplants.oregonstate.edu/plants/araucaria-bidwillii

https://davesgarden.com/guides/pf/go/54481/#b

https://en.wikipedia.org/wiki/Araucaria_bidwillii

https://www.conifers.org/ar/Araucaria_bidwillii.php

https://www.flowersofindia.net/catalog/slides/Bunya%20Pine.html

http://www.theplantlist.org/tpl1.1/record/kew-14343

https://gd.eppo.int/taxon/ARUBI

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