8 July - Weevils and weeds

Adult vine weevil - Control feeding adults by spraying Chess WG or Steward during the day and apply Hallmark WZT (EAMU 2008-2944) during late afternoon onto foliage of vulnerable ornamentals for an effective control. Note that Hallmark WZT is not IPM-friendly.

Grass - For the control of annual meadow grass and some perennial grass weeds, apply Aramo (EAMU 2015-0454) on a range of outdoor shrub, heather and herbaceous crops. The optimum time for application is before the tillering of the weeds has started.

Bark-boring beetles - Adults lay eggs from July by boring small holes under joints or leaf axils. Eggs hatch and grubs bore into the tree. Suppress adult activity by spraying Decis, Hallmark WZT (EAMU 2008-2944) or Toppel 100 (EAMU 2015-1454) on stems of outdoor-grown trees.

Mare's tail - Products containing amitrole, dicamba or MCPA will give good knock-down control but are safer applied to non-crop areas. With products containing glufosinate-aluminium, use a hooded sprayer near crops. Bruise the weed first, if glyphosate is used, for better uptake and control.

Sucker insects - Apply Decis, Dimilin Flo, Hallmark WZT (EAMU 2008-2944) or Toppel 100 (EAMU 2015-1454) if seen on ornamental crops. Control sooty moulds on ornamental crops using Octave or Rovral WG (EAMU 2011-3200).

Hellebores - Apply Cercobin WG (EAMUs and restrictions apply), Octave, Signum (EAMU 2012-2141) or Switch to control leaf spotting caused by Coniothyrium hellebori.

Flea beetles - Apply Chess WG (EAMU 2013-2016), Calypso (EAMUs required), Decis (non-IPM, EAMU 2014-1011), Majestik, SB Plant Invigorator, Hallmark WZT (non-IPM, EAMU 2008-2944), Pyrethrum 5EC or Spruzit to Crambe, fuchsia, wallflowers and others. Weed hosts are willowherb and bittercress.

Red bud mite - Ensure ties are tight during tree budding to prevent mites entering behind buds.

Irrigation - If aluminium irrigation pipes or irrigators in fields are laid where there are overhead power lines, get staff involved to read the fourth edition of Health & Safety Executive leaflet GS6 for practical advice before starting.

Leaf miner - Maintain preventive sprays on young Aesculus spp. using Gazelle SG, dimethoate or Hallmark WZT (EAMU 2008-2944). Pests attack the white varieties more than the reds.

HorticultureWeek.co.uk/nursery


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

Business planning - improving productivity through training

Business planning - improving productivity through training

How to create a structured training programme for your staff to give your business a competitive edge, by Neville Stein.

Pest & Disease Management - Nursery hygiene

Pest & Disease Management - Nursery hygiene

How to create an effective hygiene programme that will support profitable growing.

Zantedeschia

Zantedeschia

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


Opinion... Winning support for nursery stock

Opinion... Winning support for nursery stock

Regardless of whether or not you voted for Brexit (I voted to remain), most politicians seem to think that it is now going to happen. What will that mean for nursery stock production in the UK?

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.


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