What tool is most appropriate for sawing limbs from shrubbery and trees?

The best choice for sawing limbs from shrubbery and trees is a pruning saw. This tool is specifically designed for the purpose of cutting through the branches of trees and shrubs. Pruning saws typically feature a curved blade which aids in making clean cuts on live wood and are often lightweight and manageable, making them suitable for use in gardens and landscapes.

In contrast, other tools such as a jigsaw are primarily intended for cutting materials like wood or metal in various shapes and are not designed for outdoor use on living plants. A portable circular saw, while powerful for cutting boards and planks, is not maneuverable enough for detailed work on branches and can pose a risk when used on live plants. On the other hand, an electric sander is not a cutting tool at all; it is used for smoothing surfaces, making it unsuitable for any form of saw work. Therefore, the pruning saw stands out as the most appropriate tool for this specific task.