Why a Plastic Bottle Greenhouse?

If you follow gardening groups on social media you will have seen lots of pictures of people making a plastic bottle greenhouse. But why?

Well people are making them beacuse they are wanting to recycle them rather than them going to landfill. It’s a great way to make use of them. It is also a great little project for you to try and at not much cost. If you know someone who drinks a lot of pop or hotels or cafes you could ask them to save them for you.


Allotment and Kitchen Garden Book

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How many plastic bottles to make a greenhouse?

To make your plastic bottle greenhouse you would need around 1400 bottles. That is a large amount of pop or water to drink. But if you do know a hotel or shop, friends or neighbours you could soon collect all these. Plus you can keep adding the extra bottles as and when you collect them

What are the advantages of a Plastic bottle greenhouse?

  • It is very cheap to build. Altogether for a 8×6 greenhouse you will need around 1400 plastic 2 litre bottles. This is a lot but if you ask restaurants, hotels, friends and neighbours you will soon collect them all.
  • It lets the rain in. As the water bottles are not sealed together it will let the rain though – not good if you are working in it but the rain water is better for the plants than tap water..
  • They are warm. The temperature inside this bottle greenhouse will be around 10 degrees warmer than outside. So this will be perfect for starting those seedlings off and expanding the growing season.
  • Easy to repair. If a bottle breaks all you have to do is drink another bottle of water and unhook the frame and attach the new bottle.
  • Great in windy conditions. As there are gaps in the bottles the wind will just blow straight through it so will withstand the winter wind. It will make it rattle about but it will stand strong.
  • Recycles the plastic. It stops anymore plastic going into the landfill and rivers. We need to look at not wasting plastic and reusing it.

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