Rust looking spots on most of the leaves of an Indian Guava (Psidium guajava)

Gardening & Landscaping Asked by Shane Gadsby on October 24, 2021

My Indian Guava (18 months) has been getting more and more rust looking spots on its leaves.

Front side: enter image description here enter image description here

Back side: enter image description here enter image description here enter image description here

  • Is this a nutrition issue? (They are given a weak fertiliser about once every 3 months)
  • A type of insect? (I couldn’t find any active bugs, and they get sprayed about once a fortnight)
  • Too hot? (Days are around 36C)
  • Too cold? (Nights are around 5C, but it lives in a greenhouse)
  • Mould? (I mould spray every month)

I found this: What are these red spots on my guava leaves? but the pics they have seem very different to mine, so I thought it would be OK to ask separately.

I rescued this plant when it was a tiny little sapling about to be thrown out by my local hardware store (Bunnings Australia), so I’ve got quite an attachment to it and would really like to figure this out.
I’ve tried so much without effect, so I’m happy to take whatever steps people recommend to get it back to health!

Thanks in advance!

One Answer

It is disease.

What is important to know here (Australia) is whether this is puccinia psidii (Myrtle Rust) because the nursery will have to be informed.

official info at Contact details for help in Victoria at:

This is Myrtle Rust on Psidium spp.

Answered by Polypipe Wrangler on October 24, 2021

Add your own answers!

Related Questions

Not sure what is happening to tomato plant

2  Asked on January 8, 2021 by continue270


Very heavy smell while growing oyster mushrooms

2  Asked on January 7, 2021 by user27663


Venus flytrap to catch fungus gnats and mosquitos

2  Asked on January 3, 2021 by ina


unwanted small. dense roots

1  Asked on December 22, 2020 by ralph


What’s wrong with pine tree?

2  Asked on December 21, 2020 by rbhat


My Cat Palm is yellowing then browning :(( help!

0  Asked on December 17, 2020 by alexis


What is this willow-like tree?

5  Asked on December 15, 2020 by jonathanc


What are these bugs and spots on my Chilli Plant

1  Asked on December 8, 2020 by mani-deep


Lemon tree losing leaves

1  Asked on December 7, 2020 by catherine


Cold Weather Trees with Buttress Roots?

1  Asked on December 5, 2020 by coryg


Monstera random new brown spots

0  Asked on December 4, 2020 by emily-grombach


Apple tree – Is this a disease?

1  Asked on December 4, 2020 by kane


Areca palm dying

1  Asked on November 30, 2020 by paromita-banerjee


Sansevieria laurentii snake plant

1  Asked on November 11, 2020 by joycelyn-mullins


Ask a Question

Get help from others!

© 2022 All rights reserved. Sites we Love: PCI Database, MenuIva, UKBizDB, Menu Kuliner, Sharing RPP