How Toilet Paper Tubes Are Transforming Home Gardens

Across Europe and North America, an increasing number of home gardeners are reconsidering what should be thrown away. One of the more unexpected stars of this low-tech movement is the ordinary cardboard toilet roll tube, which is being reused as a small plant guard, seedling pot and soil improver.

Why an empty toilet roll matters in the garden

A cardboard tube may initially appear to be worthless packaging. Once placed in soil, however, it performs rather differently. Its fibres retain water, protect delicate roots and gradually nourish the soil as they decompose. For gardeners dealing with hot weather, slugs or compacted beds, this may be the difference between a disappointing growing season and a respectable crop.

Cardboard tubes act like tiny biodegradable plant collars: they guide water, soften temperature swings and disappear into the soil.

Cardboard consists largely of cellulose, a plant-derived material that works much like a sponge. It takes in water from rainfall or watering, then slowly gives it back as the ground dries out. This steady process makes conditions around roots more consistent than in uncovered soil, particularly in shallow beds, containers and balcony planters.

Soil life also regards the tube as a food source. Fungi and bacteria begin breaking down the fibres from the outer surface, while earthworms pull pieces further underground and combine them with minerals and organic matter. Rather than relying on extra plastic pots or synthetic materials, gardeners gain a small amount of additional humus and a more open upper layer of soil.

The tube’s circular form provides practical benefits too. It shelters the ground-level area from some wind, reduces evaporation from the surface and forms a slim channel that directs water down towards the stem instead of allowing it to flow across the bed.

How gardeners are using toilet paper tubes now

Starting seeds without plastic pots

Small growers in the UK, US and Germany have begun arranging these tubes in trays or reused food cartons before filling them with seed compost. Positioning the tubes closely together helps them stay upright while the compost settles and seedlings emerge.

• Slice every tube into two or three smaller cylinders.
• Arrange them snugly in a shallow tray or a milk carton cut in half.
• Add a light, peat-free compost mixture.
• Sow one or two seeds in each tube, then cover them lightly.
• Water carefully, preferably from below so that the compost is not washed away.

After seedlings develop four to six true leaves, the complete compost plug can be planted into the garden or transferred to a larger container, cardboard included. As time passes, roots grow through the moist tube, helping to prevent the transplant shock that can happen when seedlings are removed from plastic modules.

Instead of disturbing young roots, the whole soil plug moves into the bed. The tube breaks down where the plant needs food most.

Toilet paper tube protection from slugs, wind and cutworms

A further growing use is as an inexpensive barrier for vulnerable stems. Gardeners can cut tubes into rings measuring five to ten centimetres high, then press them a few centimetres into the soil. This creates a coarse, dry collar that many slugs are reluctant to cross. It will not prevent every pest attack, but it can slow the initial wave that often destroys newly planted lettuces and beans.

The collars can also limit harm from cutworms, the soil-dwelling larvae that bite through stems at ground level. A sturdy cardboard barrier makes plants more difficult for them to reach, so many will move on elsewhere.

At exposed locations, including coastal allotments and balcony railings, a ring can additionally support thin stems and make them less likely to break close to the soil during a sudden gust.

Mulch and compost: every tube’s second use

When the tubes no longer hold their shape, gardeners are cutting them into strips to use as dry “brown” material. Spread loosely around plants, without pressing them against stems, the pieces can:

• protect the soil surface from direct sunlight and reduce evaporation,
• form a light obstacle that deters certain weeds,
• supply carbon as they rot down, balancing nitrogen-rich kitchen waste.

In compost heaps, shredded cardboard from toilet and kitchen rolls addresses a frequent issue in urban gardens: an excess of wet vegetable peelings with too little dry material for structure. When combined with food waste, the tubes absorb moisture, lessen odours and allow air to move through the heap, enabling microbes to warm it effectively.

What to use – and what to avoid

Not all bathroom packaging should be added to the soil. Gardening specialists recommend using only plain, uncoated cardboard. Heavily printed or shiny tubes can contain inks, adhesives or thin plastic coatings that decompose slowly or could introduce unwanted chemicals to beds used for growing food.

Type of tube	Garden use	Notes
Plain brown toilet roll tube	Seed pots, collars, mulch, compost	Best option; breaks down quickly
Coloured or heavily printed tube	Compost only, in small amounts	Choose if dyes are labelled as water-based
Glossy or coated tube	Avoid	May contain plastics or slow-to-rot coatings

Gardeners also advise against fitting tubes too closely around plant stems. Plants require air circulation so they can dry after rain or watering. Where cardboard sits directly against a stem, persistent dampness may encourage fungal disease. Leaving a gap roughly the width of a finger around the plant generally provides sufficient space.

How this small habit reflects a wider gardening shift

Reusing toilet paper tubes is part of a wider move towards affordable, low-waste gardening. Increasing costs for plastic pots, peat-based compost and branded pest barriers have led many people to reconsider the items already available in their homes.

The most effective garden hacks often start with ordinary rubbish, reimagined as tools.

Public allotments from Manchester to Milwaukee are seeing increasing interest in “no-dig” and regenerative methods, which focus less on feeding plants and more on feeding the soil. Cardboard, tubes included, fits easily into this method as a straightforward carbon source suitable for small-scale containers and raised beds.

Environmental organisations identify an additional advantage: reduced use of single-use plastic. Once damaged or dirty, seed trays and cell packs are famously difficult to recycle. Biodegradable pots are available, yet their cost can be hard to justify for many renters and community gardeners. Toilet tubes, on the other hand, appear almost weekly in most homes and would ordinarily be put straight into the bin.

Risks, limitations and when cardboard tubes are unsuitable

Gardeners should not regard tubes as a miracle solution. In especially wet areas or clay soils with poor drainage, extra cellulose around a stem may leave the base of the plant excessively damp. This can encourage slugs, mould and rot. In such gardens, tubes are better used as seed pots for raised beds or containers rather than planted into heavy soil.

Scale is another limitation. Several dozen tubes may be ideal for a compact urban garden or balcony, but a market gardener raising thousands of seedlings is unlikely to generate sufficient household waste and may instead opt for commercially made biodegradable trays.

Those with chemical sensitivities may prefer not to use printed cardboard near edible plants, even if the inks are promoted as plant-based. For these gardeners, only plain tubes without labels belong in the vegetable bed, while all other cardboard is kept for ornamental borders or mulching paths.

Practical ways to test the method at home

Gardeners wanting to try the approach can make a simple comparison using two rows. Start equal quantities of tomatoes, beans or marigolds, growing one half in cardboard tubes and the remainder in conventional plastic cells or open seed trays. Plant both groups out on the same date, provide equal watering, and record:

• the number of seedlings that survive being transplanted,
• the speed at which they establish roots and produce fresh growth,
• whether one group suffers greater losses from wind or slugs.

Even a basic notebook kept for six to eight weeks can reveal whether tubes increase survival rates in your own conditions. Soils and climates react differently, which means a small trial at home can often be more useful than broad guidance from books or social media.

Parents and teachers are also using tube planting as an affordable classroom project. Children may decorate the exterior with pencils, write their names on each tube and observe roots appearing when the compost plug is lifted gently. Seeing how stems, roots and soil work together directly can often be more memorable than a science worksheet.

For gardeners who already apply coffee grounds, eggshells or kitchen scraps to their beds, cardboard tubes fit easily into the same approach. They provide structure, help seedlings compete and cut waste without requiring purchases or complicated arrangements. When the next bathroom roll is finished, many gardeners are now asking one straightforward question: bin, or bed?