31 March - Nutritional top-ups

Top dressing - Wait for at least three weeks after a fertiliser application before applying any herbicides to avoid destroying the herbicide layer. Stock plants will benefit from a nutritional top-up.

Liverwort - Clean up liverwort on cleared outdoor growing beds with Venzar Flowable. Projects carried out by AHDB Horticulture have shown that Chikara and Springbok (EAMUs required) applied to non-cropped areas will also provide some control effect. Mogeton (EAMU 2015-2273) is also available, as is sodium bicarbonate applied as a powder at the rate of 122kg per hectare.

Moles - Control adults before they breed and have young. Trapping is the common control but needs skill and care. Gas tablets also work well but staff need to be trained and qualified to apply them. See www.ramps-uk.org.

Pesticides - Check that any alternatives offered to you by your pesticide suppliers are approved for use in ornamental plant production. This may require an EAMU so check before you buy. Pitfalls include using Plenum WG instead of Chess WG where only Chess WG has an ornamentals approval using an EAMU.

Gleditsia pea gall - Apply Gazelle SG or Hallmark WZT (EAMU 2008-2844) as leaves start to emerge to prevent midge egg-laying inside new buds.

Health and safety - Check your health and safety policy statement now for all the hazards on your site and bring it up to date. You should regularly review your policy statement to ensure that all new hazards are included. Check that your staff who carry out pesticide applications are suitably trained and certificated.

Root rots - Some crops are prone to Pythium, Phytophthora and Fusarium so keep them on the drier side. Drench affected plants, within their irrigation regime, with Fenomenal, Previcur Energy (EAMU 2011-1557) or Subdue depending on temperatures. T34 Biocontrol (EAMUs required) and Trianum P can also be used if temperatures are high enough on protected crops.

Eelworm - Apply Vydate 10G (EAMUs required) or Movento (EAMU 2011-1987) to previously affected abelia, anemone, Brunnera, buddleia, hellebore and weigela crops. Trial Vydate 10G on a small number of plants first to check for phytotoxicity. Movento will not provide total control.

Leaf crinkle - Cold nights and warm days can affect large-leaved shrubs and some herbaceous crops. Although it is purely cosmetic, leaf crinkle can harm sales. Vent protected structures on warmer days and fleece vulnerable crops at night to reduce extreme fluctuations between day and night temperatures.


Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Before commenting please read our rules for commenting on articles.

If you see a comment you find offensive, you can flag it as inappropriate. In the top right-hand corner of an individual comment, you will see 'flag as inappropriate'. Clicking this prompts us to review the comment. For further information see our rules for commenting on articles.

comments powered by Disqus

Read These Next



These elegant plants feature a variety of striking flower shapes in a range of colours, writes Miranda Kimberley.

Business planning: The labour challenge

Business planning: The labour challenge

With staffing becoming increasingly problematic, Neville Stein looks at the alternatives to finding good recruits.

Products special: machinery upgrades

Products special: machinery upgrades

Flexibility, accuracy and speed are the main areas where the latest equipment is improving on older models, Sally Drury finds.

Editorial ... Supporting horticultural excellence

Editorial ... Supporting horticultural excellence

The team at Horticulture Week are delighted to launch the leading industry awards schemes for 2018 supporting, encouraging and broadcasting excellence across all areas of horticulture business, people and places.

Opinion... Pepper breeders' wealth of knowledge

Opinion... Pepper breeders' wealth of knowledge

Peter Seabrook looks forward to garden centre pepper-tasting weekends.

Opinion... Shining a light on trading with Europe

Opinion... Shining a light on trading with Europe

Accurate figures are notoriously difficult to get at, but without doubt the UK imports a great deal of its ornamental plant requirement.

Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +
Horticulture Jobs
More Horticulture Jobs

Tim Edwards

Boningales Nursery chairman Tim Edwards on the business of ornamentals production

Read Tim Edwards

Ornamentals ranking

Top 30 Ornamentals Nurseries by Turnover 2017

Top 30 Ornamentals Nurseries by Turnover 2017

Tough retail pricing policies and Brexit opportunities drive the top 30 growth strategies.

Pest & Disease Tracker bulletin 

The latest pest and disease alerts, how to treat them, plus EAMU updates, sent direct to your inbox.

Sign up here

Are you a landscape supplier?

Horticulture Week Landscape Project Leads

If so, you should be receiving our new service for Horticulture Week subscribers delivering landscape project leads from live, approved, planning applications across the UK.

Peter Seabrook

Inspiration and insight from travels around the horticultural world

Read more Peter Seabrook articles