Big Tree Project
If you know of a big indigenous tree, the DSSA’s Big Tree Project wants to hear from you!
What?
How?
The biggest
Nominate
National Register of Big Trees in South Africa
The Dendrological Society of South Africa (DSSA) is the proud initiator of the National Register of Big Trees of South Africa (Big Tree Project). This ambitious project, launched in 1982, aims to identify and list the largest specimens of each indigenous tree species across South Africa.
How it works:
Nominate a Tree:
If you know of an exceptionally large tree, you can nominate it for the Big Tree Project. Simply fill out the nomination form below.
Expert Measurement:
Our accredited tree measurers will assess the nominated tree to determine if it’s a contender for the largest of its species and meets the criteria for inclusion in the register.
Size Calculation:
The size of a tree is calculated using a formula that considers three key measurements:
- Circumference at 1.4 meters above ground level: The girth of the tree’s trunk.
- Height: The tree’s height from ground level to the topmost point.
- Crown Spread: The diameter of the tree’s canopy.
A higher index number indicates a larger tree. This system allows for fair competition among different species, as larger trees naturally have higher index numbers.
Celebrating the Giants
The tree with the highest index number within its species is crowned the champion. Until a larger one comes along!
Privacy and Recognition
If a significant tree is measured on your property, you will receive a certificate from the DSSA recognizing its size. Please note that the location of trees on private property will remain confidential.
The History of the Big Tree Project
Established in 1982, the Big Tree Project has cataloged over 220 large trees, including some from neighboring Botswana. The project continues to grow, with re-measurements planned to ensure the accuracy of the register.
Ownership and Usage
The National Register of Big Trees of South Africa is the property of the DSSA. Any use of information or images from the register requires written permission from the DSSA.