Turn Empty Tin Cans into Practical Herb Planters

In spring, plenty of people clear out their kitchens and balconies without giving it much thought. One everyday item almost always ends up in the bin or recycling bag – although it really should not. Gardeners now swear by turning it into practical, surprisingly attractive herb planters.

Why empty tin cans are suddenly in demand

For most people, an empty tin can is simply packaging waste. Open it, remove the contents, throw the can away – that is the usual routine. Gardeners, however, increasingly view tins differently: as sturdy, free plant pots that can work wonders, especially on compact balconies and terraces.

With just a few simple steps, kitchen waste becomes a decorative herb pot – without buying any new containers.

Their appeal is obvious: tins are durable, stackable and easy to arrange closely together. They can fit on balcony railings, steps, an old fence or straight onto an exterior wall. Wherever there is too little room for large planters, these narrow metal containers can slot in neatly.

Many amateur gardeners embrace this upcycling idea to cut costs and avoid plastic. Anyone already feeling the impact of rising living costs will appreciate not having to buy another set of plant pots from the garden centre. Reusing tins also reduces waste, which is a bonus for anyone aiming for a more sustainable lifestyle.

The method is especially useful for tenants with a tiny balcony or a narrow windowsill. Where there is no space for a raised bed, ten or twelve tins fixed to a wooden batten can quickly create a vertical herb garden.

Turning tin cans into attractive herb containers

Transforming an empty tin into a “rustic herb pot” takes remarkably little effort. No specialist tools or professional knowledge are required. The basic process is always the same, though it can be adapted to suit personal taste.

Step 1: Clean and prepare the tin

• Thoroughly rinse away any remains of beans, sweetcorn or tomatoes.
• Peel off the label and remove adhesive under warm water.
• If necessary, smooth sharp edges around the rim with a little sandpaper.

Cleaning is not only important for appearance. Food residue can encourage mould or attract insects. A completely clean interior gives young plants better conditions in which to grow.

Step 2: Make drainage holes for excess water

This is essential: plants must not be left sitting in water. Each tin therefore needs small holes in its base to allow surplus watering water to drain away.

• Use a nail and hammer, or a small drill, to make several holes in the base of the tin.
• Place the tin on a wooden board while doing this to protect the table.
• Wear protective gloves if the metal edges bend slightly.

If the tins are to be hung up later, make an additional small hole in the back, just below the rim. A wire or cord can then be threaded through it.

Step 3: Make a hanger – wire loops instead of costly brackets

An old wire coat hanger or some sturdy cord is often enough to create a hanging effect.

• Straighten the wire hanger with pliers.
• Shape two hooks that fit through the hole at the side of the tin.
• The loop can then hang from a nail, hook or trellis.

Anyone who does not want a metal hanger can wrap the tins in jute string and tie knots in it for hanging. This creates more of a country-house look while also concealing the bare metal.

Herbs that thrive particularly well in tin cans

Not every plant enjoys a confined container, but many kitchen favourites cope well with limited space. The following varieties have proved particularly suitable:

Herb	Suitable for	Special features
Parsley	Soups, stews, potatoes	Likes even moisture and no fierce midday sun
Chives	Salads, scrambled eggs, soft cheese	Hardy and grows back quickly after every cut
Thyme	Roasted vegetables, meat, Mediterranean dishes	Manages well with little water and loves sunshine
Mint	Tea, lemonade, desserts	Spreads vigorously – a tin keeps it under control
Basil	Pasta, pizza, pesto	Needs plenty of light and regular watering

A high-quality, peat-free growing medium is ideal. Peat-free compost protects peatland habitats while still providing good nutrient levels for container plants. One extra tip: a thin layer of expanded clay or gravel at the bottom of the tin improves drainage further.

Anyone who plants a dozen tins side by side has a small, fragrant “herb wall” – perfect for a balcony, fence or windowsill.

Design ideas: from industrial to brightly coloured

At first, empty tins can look rather plain. That is exactly what makes them so versatile. A few easy changes allow them to suit almost any personal style.

Minimalist: let the metal stay visible

For a modern look, simply leave the tins unpainted. They create an appealing contrast against concrete walls, black railings or wooden battens. The shiny surface paired with lush green foliage can look almost like a designer piece from a shop.

Bright and playful: add a splash of colour

Many amateur gardeners choose weatherproof acrylic paint or spray paint. Pastel shades such as sage green, pale blue or blush pink work well with seat cushions and outdoor rugs. Those who wish can paint small motifs onto the tins, including herb names, little sprigs or dots.

• Lightly sand the tins before painting so that the colour adheres better.
• Spray only outdoors or with an open window.
• Allow the paint to dry before filling the tins, so compost does not stick to the fresh finish.

Flowers instead of foliage: trailing plants for romantic corners

Tin cans are not only suitable for culinary herbs. Trailing flowers such as nasturtiums, trailing petunias or so-called “snowflake flowers” also do well in these metal containers. For a wilder appearance, simply sow a colourful wildflower mix.

Many of these flowering plants attract insects. Bees and butterflies can therefore find food even on a small urban balcony. Placing a few tins of nectar-rich plants among the herbs makes the spot noticeably more valuable ecologically.

Watering and positioning tin-can herbs

Herbs may seem easy to care for, but they can quickly become sensitive when grown in pots. In metal containers, compost heats up rapidly in strong sunshine and dries out fast.

• Choose sunny positions that are not exposed to wind.
• In summer, water moderately in the morning and evening rather than giving too much at once.
• Avoid waterlogging – it is better to let the compost dry slightly between watering.
• A little liquid fertiliser every few weeks supports growth.

If herbs look droopy despite regular watering, check the drainage holes. They are often blocked by compost or limescale. Gently tap out the tin and reopen the holes if needed.

How safe is growing plants in metal containers?

Many people wonder whether vegetables and herbs can really be grown safely in old tins. As a rule, food tins are made from tin-plated steel. Plant roots barely come into direct contact with the metal rim because the compost sits between them.

For extra reassurance, use tins with an internal coating or insert a thin plastic liner with drainage holes drilled into it as well. This reduces contact between the compost and metal even further. For ornamental plants, the issue is not a concern in any case.

Making more of tins: leftover herbs and family projects

The tin-can idea is ideal for an impromptu gardening activity with children. Give every tin a name, then let the children plant and paint their own pots. It is a playful way for them to learn how plants grow – and that not everything needs to go straight in the bin.

This mini herb garden is also useful for rescuing leftovers from the supermarket: a bunch of slightly wilted parsley, a pot of basil drooping in its plastic tray, or mint sprigs left over from the last cocktail evening. Some can be placed in water to root before being planted in a tin. This extends their useful life considerably.

Anyone who watches their kitchen closely soon notices that many households collect enough tins each week to fill an entire herb wall.

The next time a tin is opened while cooking, there is no need to dispose of it without a second thought. With a nail, some compost and a small herb plant, apparent rubbish becomes a useful and unexpectedly decorative feature – making even the smallest balcony a little greener.