Topping Method Topping is a good method to keep your cannabis plants short and bushy. This technique also helps your plants to produce several kolas instead of one. After you have topped and if the plants have several healthy shoots and they are growing vertically, you need to pull back the branches downwards and outwards. Most farmers attach the branches to the pots with strings. These plants need to have a slight amount of built intension and you can use an elastic band between two lengths ...