Robust plant species are those that can thrive in a variety of environmental conditions, including extreme temperatures, poor soil quality, and limited water availability. These plants often have strong root systems, thick leaves, and other adaptations that help them survive in challenging habitats. Examples include cacti, succulents, and grasses. These species play a crucial role in ecosystems by providing food and shelter for wildlife. Their resilience makes them important for restoration projects, as they can help stabilize soil and prevent erosion. Additionally, robust plants are often used in landscaping for their low maintenance and ability to withstand harsh conditions.