What is Garlic Rust
Garlic or allium rust is a fungus that can really reduce the vigor of your garlic patch and it’s a common problem NZ & Australia wide now.
It flourishes with high humidity and low sunlight. Garlic rust starts as small white or yellow flecks that become darker orange or black raised spots on the leaves of your garlic plants.
How to Prevent Garlic Rust
Good spacing appears to be one of the simplest methods for dealing with rust. as plants spaced closely together can be devastated much more easily.
The only sure way to keep rust from your garlic is to keep it dry. A good option here is a small cloche system, or if you’re already lucky enough to have a greenhouse. Keeping your garlic covered will ensure it doesn’t develop rust when the warm spring rains arrive.
Another trick is to always avoid watering your garlic leaves, only try to water the base of your garlic plants.
Removing infected leaves at the first sign of rust infection , and binning them is also helpful – look out for small white or yellow flecks on the oldest leaves, these leaves are best removed before the rust turns bright orange.
If you spray with a fungicide at the first sign of infection, you should be able to slow it down enough to get a good harvest, and if necessary repeat every couple of weeks until harvest.
Tips for avoiding garlic rust:
- Minimise water splashes onto the leaves. Avoid watering the leaves (especially if they won’t have time to dry before evening), and avoid watering your garlic plants late in the day.
- Remove and discard infected leaves if you catch rust early (look out for small white or yellow flecks on the oldest leaves, best removed before they turn bright orange).
- If you can grow it under cover to keep it dry (e.g. in a cloche system or greenhouse) this should help to prevent rust hugely.
Therefore, How to Prevent Garlic Rust is very important to grow heathy and good garlics.
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