Category Archives: help blog

‘What can I do to prevent guava moth attacking our feijoa tree this year?’

This is a tricky one. We understand there isn’t a specific solution yet for the guava moth.
What seems to work is having a lot of beneficial insects around the trees. Plant herbs and flowers that attract beneficial predators near the trees – things like borage, alyssum, hyssop, sage, lavender, and echinacea.
If you spot guava moth this season, you could try spraying a mix of neem oil and water all over your fruit trees including the fruit. It works best when sprayed on developing fruit.
And if you do get an infestation, then infected fruit should be removed. Don’t put them in your compost, as this will allow them to continue breeding on your property.
Finally, keep your trees in good health as healthy trees are usually less likely to be attacked.

‘We are about to build our first green house using recycled windows. Is it best to sit the house on a solid surface?

Full question:
We are about to build our first green house using recycled windows. Is it best to sit the house on a solid surface i.e. concrete or paving? I understand this will give thermal mass making the house warmer. A solid surface will also make it easier to sweep out and keep clean.
Or is it better to site it on a dirt floor and therefore be able to grow some plants directly in the soil to get the benefit of the soil bacteria. Is growing in very large pots as beneficial as growing in the ground?
The house will be fairly small 3m x 2m.

Our response:
Growing in the ground will always be better than in pots. A solid floor may warm up more quickly but it can also cool off quicker than soil.
You could consider a concrete strip in the centre as a walkway which will help make the house warmer. 🙂