How to join in
Herbicide phytotoxicity testing on a range of container-grown ornamental plant species
Visual summary of the first viewing event, 21 April 2026
Event staged at Darby Nursery Stock to view and discuss the various symptoms generated 7 and 14 days after herbicide treatment.
This project has been funded by HCP Ltd using returned grower’s AHDB levy monies in the form of a grant payment to support plant protection improvements.
A range of short-term crop protection focused projects will be funded across all of horticulture using the funds, a number of which will cover the various sectors of ornamental horticulture including hardy nursery stock, bedding and pot plants, cut flowers, and bulbs (narcissus).
Various trade and crop associations, and grower groups are involved in the generation of the project proposals.
Treatment and symptom discussion
Inspecting the treatment blocks
Leaf chlorosis symptoms
Stem twisting symptoms
Leaf necrosis symptoms
Handout from the event
The handout containing the herbicide treatment list, information about each one, the full list of plants treated, and the symptoms noted after 7 and 14 days post treatment can be found below.
Related documentation
Look out for promotion of the next trial viewing event after the second herbicide application in late summer.
Project consortium members
