Hi @PhilSS,
Thank you for your question about your Guava tree.
It certainly looks like the main issue is that your guava tree needs a good drink.
Are you watering it regularly? If so, how frequently are you watering it?
Depending on the weather and the quality of the soil, your Guava tree may need to be watered 2-3 times a week. Water deeply initially, wait a few days and then check the soil before watering again. Place your finger into the top layer of soil about 5cm deep. If the soil is still damp, wait a day before watering, if it is bone dry, water again deeply.
You can also use a plant tonic such as PowerFeed 600mL Fertiliser Liquid Concentrate to give the tree a burst of nutrients in the short term. This will help it bounce back to better health quickly.
In the longer term, an application of Scotts Osmocote 500g Citrus and Fruit Controlled Release Fertiliser every 6 months will provide the key nutrients that the guava tree needs to thrive.
You might like to check out How To Grow Your Own Fruit And Veg for some further guidance.
Let me know if you have any further questions.
Jacob
