One of the most beautiful flowers, that is also used in order to decorate balconies and gardens is the bougainvillea. South America is the native home of bougainvillea plants, and in its natural tropical growing environment, it flowers all year. Bougainvilleas are a popular garden plant, due to their stunningly coloured bracts and their versatility in the garden. You can successfully kill bougainvillea shrubs by cutting back the growth severely and applying glyphosate herbicide to the cut stems. Many of today’s bougainvillea are the result of interbreeding among only three out of the eighteen South American species recognised by botanists.