It’s common, particularly after rain, to see some brown rot developing in your apricots. You might also see it in peaches and nectarines. Warm, rainy weather is such a risk to fruit growers that the Bureau of Meteorology even issues brown rot warnings.
Notice how the brown rot often starts around a hole?
The holes might be caused by a tiny pest called Carpophilus beetle, insects called garden weevils, or in this case, earwigs.
How do we know? Because earwigs classically leave tell-tale round holes in fruit, as you can see in this photo.
The combination of a small hole in the fruit, and a bit of rain can lead to a bit of a brown rot outbreak in your apricot tree.
A lot of the infected fruit tends to fall to the ground. Be sure to clean up any fallen fruit from the ground. If they’re not too far gone, you should be able to cut out the rotten part, and eat or cook with the rest of the fruit.
If they’re not good enough to eat, they can safely go in the compost, or animals like goats or chooks will love to eat them. This will help stop the spread of the disease this season. It will also help keep the tree disease-free next year.
It’s important to remove any rotten apricots that you see in the tree, to stop the disease from spreading from one piece of fruit to another. Pieces of fruit that are touching are particularly vulnerable.
How to prevent brown rot from developing
Controlling brown rot, like all fruit tree diseases, relies on the 8 principles of disease prevention:
- Love your soil
- Prevention is easier than cure
- Protect the predators
- Encourage variety in your garden
- Hygiene, hygiene, hygiene
- Maintain your trees
- Monitor your trees regularly
- Plan your fruit tree garden.
You’ll find more detail about the 8 principles, and details of how to manage 27 different diseases of fruit trees in What’s That Spot? Common diseases of deciduous fruit trees.
Is it too late to prevent brown rot if I’ve already got it?
Some fungal diseases are untreatable once you have them. Leaf curl in peaches and nectarines is a classic example. But others, like brown rot, are definitely worth treating to stop them spreading and getting worse.
The main solution is to use a “cover spray” of an allowable organic fungicide. We prefer sulphur, as we explain in our free Pest and Disease webinar. It’s one of the least harmful, it’s relatively easy to use, and (if you use the right type) it can be very effective.
Thank you for sharing.
Our pleasure @Keven, glad you found it useful. Cheers, Katie and Hugh
My dwarf peach tree had leaf curl. My nectarine also had it for many years and the fruits have worms so had not had nectarine for years. For the first time, this year the cherries had worm in them. What is causing this? Ive had many small flies in the backyard and not sure if these are fruit flies.
I also have chickens and I have traps for the flies.
What is the most effective method to treat this? Until now I have stayed away from spraying but may have to do that next season.
Thank you
Hi Norma, that sounds pretty terrible, but don’t give up! Each of these problems is fixable, you just need specific information so you can take the right action at the right time. Leaf curl is usually preventable if you spray at the right time – the trick is that the right time can be different for different varieties. Fruit fly – it’s important to make sure you have the right traps out for them, and you get a positive ID on the worms to make sure what you’re dealing with. We have different short courses that will help with each course, but we really recommend you do our webinar on pests and diseases – https://growgreatfruit.com/pest-and-disease-webinar/, and take up our trial offer to try out the GGF program. We can definitely help!