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Grower Technical Workshops

The workshops 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.

Grower Technical Workshops and Masterclasses for 2025

Note, that the workshop format is the same as in previous years, up to 30 delegates, nursery and local venue based, with various presentations and practical applications; while the new masterclass format is up to 10 delegates, nursery based, more in-depth detail, a chance to modify your own programmes and procedures. Click on the download link under each event title for the detailed, final agenda (when available). To book a place (maximum of two per business for the workshops and one per business for the masterclasses) complete the booking form below the summary table.

Title and format

Location

Date

Provisional content

New developments in biological pest control

Workshop

(Download the agenda here)

Agrii, Throws Farm, Dunmow

6th May 2025

Presentations from various biocontrol suppliers on innovative products and approaches to using commercially available biocontrol agents and equipment, and new monitoring options, and learnings from other horticultural sectors and organic crop production. Demonstrations of biocontrol release formats with samples from biocontrol companies, handheld mechanised application techniques including a ‘sprayable’ form of Phytoseiulus, monitoring, and the use of aids and feeds to establish biocontrol agents within crops.

Aphid management in ornamental crops

 Masterclass

(Download the agenda here)

Harper Adams University, Newport

3rd June 2025

Presentations covering aphid identification, lifecycles, and the biology of commonly occurring aphids and their biocontrol agents. Two PhD student presentations covering aphid control.  Exercises on identifying aphid species, and devising a biocontrol programme for aphids by crop along with integrating plant protection products within programmes.  A tour of the entomology department at Harper Adams University. Summary quiz at the end of the event.

Cultural control of plant growth, and optimising the use of plant growth regulators to manage crop growth and development

Workshop

Wyeplants, Spalding

9th September 2025

Presentations on the impact of different irrigation regimes on plant growth and control using different soluble fertiliser feeding regimes, environmental and physical control options, plant growth regulator (PGR) approvals and product uses, best practice guide for PGR application, use of adjuvants with PGRs, mixtures and mixes with fertilisers. How to integrate PGRs within integrated pest management including addressing compatibilities and side effects on biocontrol agents.

Optimising nutrition and nutrient delivery in peat-free crops

Workshop

Chapel Cottage Plants, March

21st October 2025

Presentations from growing media and fertiliser manufacturers covering controlled release fertiliser coatings, incorporation of fertilisers within peat-free growing media, commonly used biostimulants with peat-free growing media and what they achieve, the most frequent nutritional problems in relation to peat-free production and the fertiliser options for correcting them. Information from the RHS Peat-free Fellowship. (The following day will see a Member Regional Event staged at the same venue).

Plant protection product management and best practice

Masterclass

Darby Nursery Stock, Norfolk

18th November 2025

Presentations covering the legislative requirements for plant protection product application, storage, and records, interpreting label and off-label approvals, recommendation sheets, spray task sheets and record keeping. Chemical store mini audit. An exercise on completing LERAP and operator record sheets. Summary quiz at the end of the event.

 

Booking Form

Please fill in all the required fields, and select which events you would like to attend. Should you have any questions or queries please use the contact details below for additional support

Contact Details

Previous workshops

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

 

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