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How can I prevent Fruit Fly on Guava trees

I have feijoas (planted in the ground where the soil is clay) and cherry guavas (planted in pots) and this season I found fruit fly in the fruit so I was unable to eat them. I am wondering what I can do to prevent this happening for next season. Now that they have finished flowering and fruiting, am I able to prune them back? Is there natural remedies I can use? How often do I need to fertilise / repot these?

Fruit and Citrus • Pests

Fruit fly can ruin your hard work put into producing fruit. You can use Yates Nature's Way Fruit Fly Control. This product contains a bait and an insecticide which attracts the female fruit fly after they hatch and gives them a dose of insecticide. You should start applying this product as soon as fruit flys are present. Now is the best time to start pruning your feijoa trees, focus on shaping the tree and thinning inner branches to increase light in the centre of the tree. This link has a good guide to pruning You don't need to prune your cherry guava's much just to maintain the shape you like, cut off suckers and remove dead, diseased and spindly stems. You should fertilise both of these trees in spring and summer with a complete fertiliser like Yates Thrive Natural Citrus & Fruit Pelletised Plant Food. It's enriched with Dynamic Lifter and has added nitrogen, phosphorus and potassium to give your fruiting plants the right balance of nutrients for their growing needs. You should only need to repot the plants if they are growing too large for their pots (breaking them) or the mix has collapsed and compacted stopping water from entering the mix. This happens about every 5 years or so but it can be highly variable.



Answered: 28 Apr, 2015

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