White cabbage moth butterfly caterpillar organic pest control

How to beat pests naturally and grow an organic balcony food garden

Pest control in balcony and small space food gardens is a massive topic and a series of blog posts will deep dive into some practical tips and tricks for conquering the pests.

Our biggest predators have been caterpillars and slugs, although the Summer months have also brought their share of aphids and the dreaded mealybugs. Allowing the natural eco-system to evolve has supported the garden to manage pests naturally. We have several small spiders living on our balcony. Flowers are interspersed through our garden and these attract birds which eat the caterpillars and slugs.

We believe in organic gardening as a long-term solution

We garden organically so do not use snail or slug pellets or chemicals to deter any of our pests for several reasons:
  • Chemical pesticides are a short-term solution- They work by killing the pest but often kill beneficial insects too which can lead to more of the original pest with less beneficial pests
  • Birds, cats, dogs and even children can accidently ingest harmful snail and slug pellets which can be lethal.
  • Spraying pesticides on plants that are for human consumption means ultimately you too end up ingesting the pesticide
  • The pesticide can end up in the soil, leading to microbiome imbalance in the soil which leads to further problems down the track and inhibiting plant growth
  • Birds, cats and dogs sometimes end up eating slugs, snails or caterpillars that have died from pesticide. This can then harm or even kill them.
  • We see the health of our balcony food garden as intrinsically linked to our families health. It is too important to use harmful chemicals.
  • In small space gardening, if you spray chemicals there is a high chance that spray could enter your home.

What are organic solutions to pesticide for a balcony food garden

  1. Plant flowers- We used to have a big problem with mealybugs and aphids but we planted a beneficial insect mix of seeds and we have had this incredible increase in the activity of ladybugs and even birds in our garden. These feed on the pests in our balcony garden and help the natural balance of our garden stay in check. We are now visited daily by birds in the local area.
  2. Try a snail and slug beer trap- place some beer in a saucer, big enough for the snails and slugs to fall into and leave overnight. Be sure to cover it so the poor birds don’t get more than they bargain for with their breakfast…
  3. Manual removal- The benefit of small space gardens in that it is actually not that difficult to spend 5 minutes a day checking for snails and slugs by torch light in the evening, and caterpillars during the day. You can relocate them to bush land or parks nearby and the birds will thank you for the feast! Tony and I laugh that before we started a family, we would bond late at night over a glass of wine in a candlelit room. Now, we have just as much fun bonding, still often with a glass of wine but now while on a slug and caterpillar hunt! We still find it just as fun though!
  4. Install a bee hotel- We are planning on installing a bee hotel for the native stingless bees. We have a lot of them in our area so why not give them somewhere to stay. There is a wonderful range on the market. Eco-Friendly Bug House Hotel – Insect Nest Box for Gardens and Yards
  5. Focus on the health of your soil rather than on the problem at hand- often pests are opportunistic. Aphids for instance tend to thrive when a plant is not very healthy. By ensuring your plants have enough light, air-flow and well nourished soil, your plants health can improve and that can prevent pest problems.
  6. Try a milk bath for powdery mildew
  7. Decoy butterflies- Believe it or not, the white cabbage butterfly moth is very territorial. We had a great time erecting our stunt double butterflies and have noticed a decrease although not total elimination, in our caterpillars. See video of the process below. Decoy butterfly video- numbers decreased initially but some have been reappearing
  8. Order beneficial bugs to destroy pests- We ordered Cryptolaemus larvae, the natural predator, of the mealy bug. Mealy bugs are incredibly destructive and infestations take off very quickly and spread from plant to plant. They will kill a plant if not dealt with. Only the females are visible to the naked eye. They feed on plant juices. Cryptolaemus for mealy bugs

Your balcony garden is its own micro-ecosystem

When you start seeing your balcony or small space garden as an ecosystem just like any other, you realise that by making slight changes you can actually maximise its ability to work symbiotically and the amount of work that you need to do decreases.

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How to start a balcony garden

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