Answer : Yes, you can be a landscape designer without a degree. However, having a degree in landscape design will give you more credibility in the field. There are many online courses and tutorials that can teach you about landscape design. There are also many books on the subject.
It is important to have a strong understanding of horticulture, botany, and earth science if you want to be a successful landscape designer. It is also helpful to have experience working with plants and landscaping materials. Some people may choose to become certified in landscape design through an organization like the Professional Landscape Architects Network (PLANET).