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Plastic has become deeply embedded in all aspects of our lives. That includes in our gardens, from pots and seed trays to plant labels, weed mats, tools and packaging.

While plastic is undoubtedly convenient, it also comes with significant environmental and health concerns. Globally, plastic pollution is prevalent in our waterways and oceans,1 leaching harmful chemicals into our soils, and contributing to climate change through its fossil-fuel-based production.

The good news? There are many simple, effective ways to reduce plastic in your garden without changing too much about how you do things or sacrificing plant health. It starts with making thoughtful choices and considering some alternatives.

Here are four key principles to guide a more sustainable approach:

  1. Shop carefully and consciously – seek out plastic-free options and consider the lifecycle of what you buy.
  2. Choose natural materials where possible – you may be surprised at the large selection of non-plastic gardening tools and supplies available.
  3. Opt for local, home-made, and thrifty solutions – reducing your reliance on mass-produced goods and embrace creativity is usually the most sustainable option.
  4. Care for and maintain your garden supplies and gear – reuse and repurpose whenever possible and dispose of items responsibly when they reach the end of their life.

The following table offers practical ways to put these principles into action. These tips will help you to grow your plants without growing your plastic footprint.

Do you have other ideas for reducing plastic in the garden? Get in touch, we’d love to hear them!

Item

Plastic-free alternatives

Seed trays and punnets

  • DIY wooden seedling trays
  • DIY newspaper or toilet roll pots, egg cartons
  • Soil blocks
  • Coir or peat-free biodegradable pots
  • Grow from seed rather than buying seedlings

Pots and containers

  • Terracotta, ceramic, wine barrels
  • Coir or peat-free biodegradable pots
  • Reuse black plastic pots as many times as possible; recycle at a PP5.com.au collection point (not in council recycle bins)
  • Get creative and thrifty with alternatives!

Plant labels

  • Paddle pop sticks
  • Bamboo, slate, metal or copper labels
  • Refuse labels at community nurseries or when buying in bulk

Plant ties

  • Jute, hemp, hessian or cotton twine or ties
  • Cotton t-shirt cut into strips

Stakes and trellises

  • Bamboo or timber
  • Grow your own eg bamboo, hazel
  • Use plants as supports eg three sisters

Tree guards

  • Cardboard or coir tree guards
  • Cardboard boxes (milk cartons for small plants)

Weed mat

  • Wool, jute or coir weed mat or squares
  • Sheet mulch using newspaper or cardboard
  • Hessian sacks, used coffee roasters’ bags and clothing made from natural fibres
  • Mulch
  • Plant to fill gaps and bare soil

Fake turf

  • Lawn
  • No-mow lawn alternatives or garden beds
  • Mulch or timber decking if lawn is not needed

Bird and insect netting

  • Plant-based netting is available but not in Australia
  • Make individual bags by stapling metal fly screen mesh
  • Reuse light fabric or lace curtains making sure it meets wildlife friendly netting criteria

Frost covers

  • Wrap frost-sensitive plants in hessian or layers of newspaper overnight (must remove the next day)
  • Mound straw around frost-sensitive plants
  • Delay planting frost-sensitive plants

Shade cloth

  • Reuse curtains or fine fabric making sure it meets wildlife friendly netting criteria

Tabletop greenhouses

  • Start seeds indoors
  • Use berry punnets as mini greenhouses then transplant (*plastic reuse rather than avoidance)
  • Delay planting then plant outdoors in warmer weather

Soil, potting mix and compost

  • Buy in bulk
  • Make your own compost and worm castings
  • Make your own seed raising mix
  • Reuse soft plastic soil bags as garbage bags (they are often too dirty for soft plastic recycling)

Hand tools

  • Timber or metal
  • Buy good quality and clean and maintain tools to extend their use

Gloves

  • Cotton, canvas, bamboo and leather options available

Pesticide, herbicide and fertilizer bottles

  • Consider physical, cultural and biological alternatives
  • Make your own using non-toxic household ingredients and store in glass jars
  • Buy concentrates to reduce amount of packaging

Spray bottles and tanks

  • No alternative
  • Clean and maintain to prolong their useful life
  • Some pesticides and herbicides can be applied with a watering can (follow manufacturer’s advice)

Watering cans

  • Metal

Garden hoses

  • No alternative
  • Care for hoses to prolong their useful life

Garden hose fittings

  • Brass fittings and watering wands
  • Keep plastic fittings out of direct sunlight when not in use

Irrigation systems

  • No alternative?

Water tanks

  • Galvanised metal
  • Get expert advice on the most appropriate material for your site, needs and budget

Garden edging

  • Timber or metal (eg corten)
  • Opt to do without edging

Garden furniture

  • Timber, metal or glass furniture
  • Keep furniture with plastic fittings out of direct sunlight when not in use to prolong its life

References and further reading

  1. Sally Nex ‘How to Go Plastic Free in Your Garden‘ Royal Horticulture Society
  2. Jennifer Howell ‘Comparing Biodegradable Plant Pots‘ Garden Gate Magazine 
  3. Greening Australia 10 tips for plastic-free planting 
  4. Gardening with the RHS podcast ‘Plastic – not Fantastic
  5.  GuardnGrow Natural weed mats, pots and tree guards
  6. Veggiemesh biodegradable garden netting
  7. Wool Valley wool weed matting
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