Expert Centre
Pest and disease advise

Pest & Disease Advice

The more we understand a pest of disease life cycle, the easier they are to control. Knowing at which stage your particular infestiation is will ensure you are able to target them with your crop protection programmes to ensure maximum control.

In the pages below, you will find information on all the main pests and diseases we face in East Africa when growing floriculture crops. This includes what symptoms indicate the diseases and infestations; management best practices, resistance management guides and life cycles to help you identify your issues and most importantly, find the best product for you. 


Botrytis primarily attacks tender, weak, wounded or dead tissue.

Downy Mildew

Symptoms are yellowing leaves surrounding angular areas which can vary from green islands, to purple or dark brown lesions.

Powdery Mildew

Severe mildew damage reduces leaf growth, aesthetic value of plants, photosynthetic efficiency and thereby plant growth.


Each type of rust has its own distinctive symptoms and its own specific plant hosts. Rust symptoms are initially characterised with light green coloured lesions.


Aphids damage crops directly by distorting leaves and flowers as they feed.


Caterpillars feed on leaves, buds, growing points and flowers. Leaf damage reduces leaf area which can slow plant growth.


The nymphs and females cause damage to host plants with their piercing-sucking mouthparts which they use to suck sap and remove nutrients.

Leaf miner

Leaf miners are members of Diptera group like flies and mosquitoes.

Root-Knot Nematode

They enter plant roots, cause distinct root knots and severe deformation on the roots.

Spider Mites

Spider mites are especially abundant during dry seasons and typically colonize the under-surface of leaves.


Adults are mainly flower-feeders but will also feed on stems and leaves of plants as well.


Both adult and larvae feed on plant phloem by injecting enzymes and removing the sap, reducing vigor of the plant.