Repurposing everyday objects into garden decor has become a popular way to add character to outdoor and indoor spaces. The metal watering can, with its classic shape and often weathered appearance, is a favored item for this transformation. Converting this functional tool into a decorative planter offers a charming, rustic aesthetic that complements various garden styles. This project allows gardeners to create unique, eye-catching displays. The appeal lies in combining utility and ornamentation in a single, versatile piece of garden art.
Preparing the Watering Can for Planting
The first step in converting a watering can into a healthy plant container is ensuring proper drainage. Unlike traditional pots, metal watering cans are sealed, meaning water retention will quickly lead to root rot if not addressed. Creating several small drainage holes, approximately one-quarter inch in diameter, in the bottom of the can is necessary to allow excess water to escape efficiently. For galvanized steel or thin copper, a standard power drill fitted with a metal-specific bit is the appropriate tool for this modification.
The watering can’s spout presents a unique design element that requires consideration during preparation. Leaving the spout open allows it to act as an additional drainage point, especially if the can is angled slightly in the display. Alternatively, the spout can be sealed using silicone caulk if a cleaner aesthetic is preferred or if the can will be used indoors with a collection saucer. Inserting a plastic pot or liner inside the metal shell extends the planter’s life by preventing direct contact between the moist soil and the metal surface.
Selecting Plants and Growing Medium
Because the watering can offers a restricted volume for the root system, selecting appropriate plant species is important for long-term success. Shallow-rooted plants naturally thrive in this environment, making smaller annuals like petunias or impatiens excellent choices. Herbs such as thyme, oregano, or small succulents are also well-suited due to their minimal root requirements and tolerance for drier conditions. Selecting plants that naturally trail or cascade, such as creeping jenny, creates a visually appealing effect as they spill over the rim and down the spout.
The limited container size dictates a specific approach to the growing medium. Standard garden soil or topsoil is generally too dense and can compact, which quickly suffocates the roots in a small container. Utilizing a high-quality, well-draining potting mix is necessary to ensure adequate aeration and prevent the soil from becoming waterlogged. Mixing amendments like perlite, coarse sand, or pumice into the potting mix further enhances porosity and drainage in a non-porous metal container.
The small soil volume means the planter will have a low nutrient reserve and dry out faster than large garden beds. Regular, diluted applications of a balanced liquid fertilizer are necessary to sustain plant growth throughout the season. Checking the moisture level by inserting a finger two inches deep into the soil should be done daily during warm weather to prevent dehydration.
Display and Long-Term Care
The metal watering can planter is versatile and can be incorporated into various display settings, both indoors and out. Placing the can on a patio table or front porch provides an immediate focal point, especially when grouped with other potted plants of varying heights. For a dynamic look, the planter can be mounted onto a wall or fence, allowing trailing plants to hang freely and utilize the spout’s unique shape. If the planter is placed indoors, ensuring it rests on a waterproof saucer is necessary to protect surfaces from any unexpected drainage.
The primary concern for long-term care of a metal planter is preventing corrosion, particularly if the base material is galvanized steel or iron. Constant exposure to moisture from the soil and rain accelerates the oxidation process, leading to rust formation. Applying a clear, exterior-grade protective sealant spray to the can’s exterior and interior before planting can significantly delay this deterioration. Reapplying this sealant annually is necessary to maintain the structural integrity and aesthetic of the metal surface.
Because metal is an excellent heat conductor, the can’s small volume of soil is prone to rapid temperature fluctuations. On hot, sunny days, the dark metal exterior absorbs intense solar radiation, causing the soil temperature to rise quickly and desiccate the roots. This thermal effect necessitates more frequent monitoring and watering compared to traditional ceramic or plastic containers. Watering thoroughly until water runs out of the drainage holes ensures the entire root ball is moistened, but it is important to avoid letting the can sit in a pool of water for extended periods.