What is the name of the spade-like tool used to open holes for planting trees?

The spade-like tool specifically designed for opening holes for planting trees is called a dibble bar. This tool is particularly effective because it features a narrow, flat blade that can penetrate the soil easily, creating a hole which is just the right size for planting seedlings. The design allows for minimal soil disturbance, making it ideal for planting in various soil types, especially in conditions where keeping the root system intact is crucial.

In contrast, while a shovel is often used for digging and moving larger quantities of soil, it may not provide the precision needed for individual planting. A trowel, although useful for smaller gardening tasks, is generally too small and less effective for the requirements of tree planting. A post hole digger is designed for creating deeper holes for fence posts and similar applications, rather than the specific depth and width needed for planting trees. Thus, the dibble bar stands out as the most suitable tool for this task, emphasizing its unique design and functionality in forestry practices.