Macadamia is an evergreen tree that grows to a height of about 20 metres and has a wider ecological suitability. A number of varieties are planted locally, but one must select that which is well-adapted to their ecological conditions. During heavy rainfall, inadequate pollination takes place, which results in flower abortion or even the nuts fall off prematurely. An extended dry season can lead to the dropping of the tree, especially if it is planted in sandy soils that dry quickly. Most trees planted in sandy soils thus concentrate their energy on few number of nuts they can support during dry season.

Source: Daily Nation July 10, 2020 21:00 UTC