Chrysanthemums in Aberdeen

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Common Pests:
- Thrips
- Leafminer
- Earwigs
- Slugs 
- Whitefly
- Capsid Bug
- Caterpillars
- Red Spider Mite
- Vine Weevil
- Sciarid Fly
- Stool Miner

Common diseases: 
- White Rust
- Verticillium Wilt
- Powdery Mildew
- Crown Gall
- Chrysanthemum Rust
- Botrytis

Common disorders:
- Nitrogen 
- Phosporus
- Potassium 
- Magnesium
- Manganese
- Copper
- Iron
- High Salt levels

Suggested settings:
- Monitor

- contact me

Date last updated: 
02 July 2008


Chrysanthemum Rust (last updated 02 July 2008 )

Chrysanthemum Rust 
(Puccinia chrysanthemi)

First found in England in 1895 but known in Japan long before this. It spread throughout Europe and now is fairly common although its importance has been eclipsed by Chrysanthemum White Rust.

Usually appearing in late summer, most common on indoor plants and less common on outdoor chrysanthemums. Dirty brown pustules on the undersides of the leaves and yellowish green spots on the upper surface of the leaf. 

The disease produces urediniospores, other types of spores are unknown to this disease, and it either over winters as urediniospores or as Mycelium on old leaves within plant tissue. 

This disease has been little seen for many years but has re-emerged again recently. Consequently recommended treatments are for old fungicides like Bordeaux mixture and copper fungicides.

It would be worth trying modern fungicides used against Chrysanthemum White Rust as these were not available when Chrysanthemum Rust was prevalent.

Hot water treatment has been found to have some affect in its control.

Other information 


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Copyright 2008 Paul Barlow.