Mango 'New Guinea Long'
Mangifera indica
Anacardiaceae family
Grafted
A ripe New Guinea Long has green-yellowish skin with light brown dots, which may not make it the prettiest of mango; however, its sweet deep yellow to orange coloured flesh is thick yet soft, not watery and fibrous. An unripened New Guinea Long can be used for rujak (Indonesian Mango salad), as it is not too sour and the flesh is crisp.
Each Mango can be quite large - weighing up to 800g, with the average weight of 500g per mango. The fruit is prone to splitting as it ripens on the tree, so keep a close eye on it. Harvest from approximately January to March.
This particular tree was kept in a pot for too long, and a root has wrapped around the trunk (visible at the base of the tree). This is restricting the tree's growth and may in fact have a dwarfing effect, which will be beneficial because it is planted with a cluster of Mango trees at Lennox Community Gardens, planted fairly close together (approximately 3 m apart). A compact form will need to be maintained so that all of the trees have access to adequate light. Alternatively, the twisted form may strangle the tree and it may not survive - it is an experiment!
Also known as Cedar Bay Mango in Australia, and Mangga Golek Mango, Rabaul Mango, Foo Fat Mango, Carrot Mango and PawPaw Mango in other regions like Papua New Guinea.
Tree Provenance
Grant Jenkins obtained the scion wood (small branch/twig from a mature tree) from Boyd Kellner, and grafted it onto a 'Kensington Pride' rootstock in 2020.
Tree Maintenance
Mangifera indica
Anacardiaceae family
Grafted
A ripe New Guinea Long has green-yellowish skin with light brown dots, which may not make it the prettiest of mango; however, its sweet deep yellow to orange coloured flesh is thick yet soft, not watery and fibrous. An unripened New Guinea Long can be used for rujak (Indonesian Mango salad), as it is not too sour and the flesh is crisp.
Each Mango can be quite large - weighing up to 800g, with the average weight of 500g per mango. The fruit is prone to splitting as it ripens on the tree, so keep a close eye on it. Harvest from approximately January to March.
This particular tree was kept in a pot for too long, and a root has wrapped around the trunk (visible at the base of the tree). This is restricting the tree's growth and may in fact have a dwarfing effect, which will be beneficial because it is planted with a cluster of Mango trees at Lennox Community Gardens, planted fairly close together (approximately 3 m apart). A compact form will need to be maintained so that all of the trees have access to adequate light. Alternatively, the twisted form may strangle the tree and it may not survive - it is an experiment!
Also known as Cedar Bay Mango in Australia, and Mangga Golek Mango, Rabaul Mango, Foo Fat Mango, Carrot Mango and PawPaw Mango in other regions like Papua New Guinea.
Tree Provenance
Grant Jenkins obtained the scion wood (small branch/twig from a mature tree) from Boyd Kellner, and grafted it onto a 'Kensington Pride' rootstock in 2020.
Tree Maintenance
- When mature prune immediately after harvest to contain the tree size and maintain production. Also remove dead, damaged or diseased branches and open the centre of the tree for air flow
- Apply Sulphate of Potash to encourage healthy stem and leaf growth, as well as promote flowering and fruiting. Do not apply any nitrogen rich fertilisers to mature mango trees. Apply late summer and late autumn.
- Mangoes will do well with a feed of seaweed solution especially during the warmer months.
- Keep soil well composted and mulched, leaving a gap around the trunk to avoid collar rot.
- When young, keep watered from spring to autumn; as a rule once mature the tree will not require much watering unless it is a particularly dry period, with the following notes: Adequate water is crucial during the early stage of fruit set. Once fruit reach 6-10cm in length this is less critical and minimal water is ideal as fruit approach maturity so they can sweeten up.
- To increase fruit set, spray with wettable sulphur when blooms develop to help keep powdery mildew in check. This should be done as per manufacturer's instructions up until fruit is set.
- Spray with Copper late autumn and after fruit set. Spray both sides of leaves but try to minimise copper dripping onto soil as too much will impact soil microbes. Copper helps reduce Mango Bacterial Black Spot (MBBS) and Anthracnose which mangoes are particularly susceptible to.
Mango 'New Guinea Long' at LCG January 2025 (photo credit: Jacqui Lachmann)
Mango 'New Guinea Long' at LCG August 2022. Note twisted form at the base of the tree - it may self-dwarf or it may die (Photo credit: Graham Bond)
