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Grower Technical Workshops and Masterclasses

The workshops and masterclasses are a great opportunity to catch up with developments in key areas of production, see a range of trials and demonstrations undertaken within a commercial environment, hear about new products, exchange findings and results, and generally network with other growers and colleagues. 

Workshop and masterclass programme for 2026

There will be two workshops and two masterclasses as part of the 2026 programme of events, commencing on 16 June. Topics include two-spotted mite control, maintaining soil structure and fertility, nursery hygiene and disinfectant use, and devising an integrated pest management programme, all specific to ornamental crops. Workshops will be capped at 30 delegates, two per business, and because of the format of the masterclasses, they will be capped at 10 delegates, one per business. Please click on the links in the table below to book your place. Please notify us if you are unable to attend any workshop or masterclass having booked on.

Title and format

Location

Date

Provisional content

Two-spotted spider mite control

 Masterclass

Book your place here

Harper Adams University, Newport

16 June 2026

This masterclass will include presentations on spider mite identification, the lifecycle of the two-spotted spider mite and other common pest mite species and integrating the use of their corresponding biocontrol agents and plant protection products. The event will include an exercise to devise and implement a two-spotted spider mite integrated pest management programme and will be rounded off with a summary quiz.

Places will be limited to 10, one per business.

Maintaining soil structure and fertility

Workshop

Book your place here

J&A Growers Ltd,

Warwick

28 July 2026

This demonstration nursery-based workshop will examine the management of soil health in the production of field-grown ornamental crops. Discussion will cover the appropriate use of farmyard manures, soil improvers, and the management of cover crops, along with nursery soil sampling plans, result interpretation and implementing fertiliser recommendations.  

Places will be limited to 30, two per business.

Nursery hygiene and disinfectant use

Workshop

Book your place here

Kinder Garden Plants,
Spalding (TBC)

29 September 2026

This workshop will feature presentations covering the disinfectants currently used in horticulture, nursery hygiene maintenance and sources of pest, disease, and weed infestations.  The biocidal regulations will be introduced and how they may impact the ornamentals sector, along with a review of mechanical cleaning machines and the various benefits they provide.  

Places will be limited to 30, two per business.

Devising an integrated pest management programme

Masterclass

Book your place here

Robin Tacchi Plants,

Thetford

17 November 2026

This masterclass will include presentations on optimising the use of biological control agents in commercial crops, integration with plant protection and biorational products, and building an integrated pest management programme for three key pests of protected and outdoor ornamental crops. The event will include a practical demonstration of a number of biocontrol product types and will be rounded off with a summary quiz.

Places will be limited to 10, one per business.

 

Previous workshops and masterclasses

After the delivery of each event, content is recorded on a webpage for future reference. Each webpage contains a technical summary of the key points discussed on the topic, relevant images from each event, videos of some of the presenters answering key questions, and the presentations and handout from each event, which can be downloaded. All the workshops and masterclasses delivered so far are summarised below, with links to the relevant webpage.

Plant Protection Product Management and Best Practice Masterclass
  • An appreciation of the legislation with emphasis on the Code of Practice
  • Understanding the available information and keeping up to date
  • Correct storage of plant protection products
  • Personal protective equipment options
  • Spraying and sprayer maintenance
Optimising Nutrition and Nutrient Delivery in Peat-Free Crops Workshop
  • Nutritional challenges faced when transitioning to peat-free production
  • Output from the RHS Peat-Free Fellowship
  • Practical advice on nutrient deficiencies
  • Development of biodegradable coated Osmocote
  • Use of specific fertilisers and biostimulants to address issues
Cultural Control of Plant Growth, and Optimising the Use of Plant Growth Regulators to Manage Crop Growth and Development Workshop
  • Mechanical and environmental manipulation
  • Growth control via irrigation and nutrition
  • Available plant growth regulator products
  • Getting the best from plant growth regulators
  • Bonzi case study
Aphid Management in Ornamental Crops Masterclass
  • Aphid identification
  • Feeding symptoms on plants
  • Monitoring
  • Biological control
  • The importance of aphid identification to optimise control strategies
New Developments in Biological Pest Control Workshop
  • New macro-biological control species
  • Biocontrol supplementary nutrition
  • Sticky trap monitoring
  • Dashboards to assist with management
  • Air assisted applicators
Root Disease Management of Ornamentals Workshop
  • Pathogen biology and life cycles
  • Sources of infection
  • Baiting stored water
  • Cultural control and disease prevention
  • Control programmes
Herbicides for Container-Grown Hardy Nursery Stock Masterclass
  • The key weed species of container-grown hardy nursery stock crops
  • The regulatory requirements behind herbicide use
  • The herbicide options available
  • Avoiding weed resistance
  • Herbicide damage symptoms
Irrigation Water Treatment for Chemical, Physical and Biological Contaminants Workshop
  • Water sources for irrigation
  • The range of irrigation water contaminants
  • Impact on crops and production
  • Matching treatment to the contaminant
  • New treatment techniques
Correct Use of Adjuvants Masterclass
  • Adjuvants and the regulations governing their use
  • Types of adjuvants and their properties
  • Influence of leaf type, crop, and water quality
  • Commonly used adjuvants
  • Selecting the correct adjuvant
Vine Weevil Control Strategies, Including Growing Media Considerations Workshop
  • Vine weevil biology
  • Other weevil species
  • Research into smart traps
  • Update on suitable plant protection products
  • How to improve control strategies
Tips for Establishment of Crops in Peat-Free Growing Media Workshop
  • Priming input plant material
  • The transplanting and potting process
  • Conditions immediately post-potting
  • Potential of plant growth promoting rhizobacteria and mycorrhizal fungi
  • Aftercare of crops
Managing Environmental Conditions in Protected Structures Workshop
  • Understanding the climate within protected structures
  • The importance of air movement
  • Alternative plastic structures
  • Securing sustainable energy sources
  • Digital crop monitoring
Nutrient Management of Field-Grown Ornamentals Workshop
  • Understanding soil structure and health
  • Crop nutrient requirements
  • Nutrient disorders
  • Fertiliser application techniques and timings
  • Developments in Europe

Getting to Grips with Biological Pest Control Workshop

  • Regulations governing biological control agents
  • Basics of biological pest control
  • Application of products
  • Agent compatibilities with plant protection products
  • Pest vs agent ratios when managing pests to maintain plant quality, cost effectively

Autumn Potting Deadlines and the Effects of Late Potting on Overwintering and Pathogen Susceptibility Workshop

  • Importance of potting date for different plant species
  • How do plants prepare for winter?
  • Improving crop hardiness through nutritional and crop protection products
  • Use of physical covers for frost protection
  • Use of frost protectants and the various types available

Herbicide Tolerance in Container- and Field-Grown Herbaceous and Hardy Nursery Stock Workshop

  • Importance of end of season weed control
  • Use of residual herbicides with contact activity
  • Selection of selective and total contact herbicides
  • Product reviews
  • Herbicide experiences from other sectors

Propagation in Peat-Free Substrates Workshop

  • Physical properties of peat-free substrates
  • The substrate and the container
  • Impact of bottom heat
  • Micronutrients and propagation
  • Water quality in propagation

Nutrient and Water Management in Peat-Free Substrates Workshop

  • Types of substrate raw materials and common blends
  • Back to basics with plant nutrition
  • Nutrient monitoring and planning
  • Matching irrigation need to blend
  • Tools and equipment

Non-Chemical Weed Control in Field-Grown Crops Workshop

  • The drivers for non-chemical weed control
  • Difficulties in implementing non-chemical weed control strategies
  • Cover crops and mulches, and the challenges in their implementation
  • Available non-chemical control methods and related costs

Improving Nursery Water Use Efficiency Workshop

  • The latest on legislation and water use parameters
  • Water sources and monitoring
  • Water capture and storage
  • Water filtration and treatment
  • Irrigation systems and efficiencies

Biostimulant Use Workshop

  • Current regulatory status of biostimulants
  • Types of biostimulants
  • How to differentiate them from plant protection products
  • What they are used to achieve
  • Tips for using biostimulants as part of an IPM programme