The tool being used in the image is a watering can. A watering can is a portable container, usually fitted with a handle and a spout, used to water plants by hand. It allows for a controlled and gentle distribution of water, preventing damage to delicate plants and soil erosion. Watering cans come in various sizes and materials, including plastic and metal, and are essential tools for gardeners and plant enthusiasts. The watering can in the image appears to be made of green plastic and is being used to water tomato plants and sweet alyssum flowers.