The answer to 'when to landscape design' is that the best time to start landscaping your home is typically in the spring or fall. These seasons provide the ideal conditions for planting, establishing new lawns, and making other landscape improvements. In the spring, the soil is moist and temperatures are mild, allowing plants to take root and establish themselves before the heat of summer. In the fall, the cooler weather and ample rainfall make it an excellent time to plant trees, shrubs, and other perennials, which will have time to develop strong root systems before going dormant in the winter.
However, the specific timing can vary depending on your local climate and the types of plants you want to incorporate. It's generally best to consult with a local landscaping professional or nursery to determine the optimal time for your area and desired landscape design.