In gardening and horticulture, topping refers to the practice of cutting off the tips or growing points of certain plants in order to control their growth. This method is often used with trees, shrubs, and other plants that have a central leader or main stem which needs to be kept at a specific height.
Topping involves removing the topmost branches or shoots of the plant by cutting them off close to the base. The idea behind this practice is to stimulate the growth of lateral buds, causing the plant to produce new side branches that will eventually become the main stem. This can help to create a more compact and bushy shape for the plant.
However, topping is not without its controversies as it can cause stress to the plant and may even weaken it over time. It can also reduce the amount of fruit or flowers produced by some plants. As such, it's important that topping be done carefully and only when necessary, with consideration for the specific needs and characteristics of each individual plant.