First of all, landscape architecture and horticulture of south china agriculture University are both in the College of Horticulture, but they are two completely different majors. Generally speaking, the former studies planting and the latter studies design. Specifically, I hope you can Baidu, and you'd better check the professional courses, and you will understand everything.
Which major is good depends on which you like, but from the perspective of employment, landscape architecture seems to be better. However, if you are a girl, I suggest you don't choose these two majors. You will find it very troublesome to get a job. Gardening, girls should not do other majors, or continue to study, do molecular physiology, be teachers and civil servants. This is not discrimination against girls. Planting and sales are really not suitable for girls, and enterprises are not easy to arrange. In gardening, girls can also consider designing and giving up construction (PS: gardening boys can consider this). Of course, if you are not very picky, Nannong can find a job.
Secondly, from a professional point of view, gardening seems to be more like agronomy, but the varieties of crops (vegetables, fruit trees and flowers) are different, so it is easier to learn and can be used for scientific research in the future. Gardens seem to be more like buildings, which need drawing design and painting software, and may look better. But in my opinion, the starting salary of landscape architecture is indeed higher and the working environment is more comfortable, but the undergraduate pressure is not small (but there are many things to learn). Becoming a designer in the future requires a lot of ability and hard work, and you need to know what you want, not what others say; In contrast, gardening is much easier and the course is much simpler. Although you may not learn anything, it is easy to get high marks (going abroad will have an advantage). Compared with yourself, you have a lot of time to do what you want to do. Maybe other majors don't have time to do it (but you must know what to do). It is not difficult to apply for this major and there are many places, so the relative requirements for parole are relatively high. You have to work hard on your grades and activity papers!
Other good majors are also relative, such as food, soil management, economy and finance, animal medicine, plant protection, resource management and so on.