This phrase describes a type of succulent plant that has a gradient of red colors. Succulents are a diverse group of plants adapted to arid environments, characterized by their thick, fleshy leaves and stems. The red coloration in succulents can be a result of various factors, including environmental conditions, seasonal changes, and genetic variations. Some popular succulent varieties known for their red hues include Echeveria, Aeonium, and Graptopetalum.