From the nursery

Metam-sodium A revocation notice has been issued for this active ingredient. Advertising, storage and use has been extended until 31/12/2014 for essential uses, ie the treatment of nursery, outdoor, potting and glasshouse soils prior to planting. Metam-sodium (Discovery, Sistan 51 and others) or Dazomet (Basamid) are still effective at this time of year, especially after the warmer periods.

Wind, rain and Botrytis For some areas the wet August and September have brought constant demands to keep diseases under control, but after last week's rain even those in the east should start to be more diligent and check for levels of Botrytis. Make sure the ventilation fans are all running in tunnels and glasshouses; this is one of the most important times for them to be fully operational. Open the doors of polythene tunnels on all the days when the wind and temperature allow. This will reduce the incidence of Botrytis and ensure adequate air changes in a closed tunnel. Applications of Amistar (SOLA 2009-0443), Rovral WG, Scala, Serenade ASO (SOLA 2009-0246) or Switch need to have adequate wetting agent for good penetration on dense cropping.

Cyclamen Keep the humidity of Cyclamen under tight control to avoid the need to spray. Spraying when the flowers are opening can result in petal spotting. My experience has shown that not all products are safe on open flowers, so wider spacing, careful watering and adequate ventilation are your best forms of defence.

Downy mildew The weather is still suitable for downy mildew to spread on Hebe, pansies and roses under cover. For stock plants and crops under protection spray with Aliette 80 WG, Amistar (SOLA 2009-2443), Filex/Proplant, Fubol Gold WG (SOLA required) or Signum (SOLA 2009-1842); watch for petal spotting on flowering plants. Using high potash and phosphate liquid feeding in the autumn with potassium phosphite products can improve a plant's resistance to downy mildew.

Water abstraction records Some of these have to be in as soon as possible after the end of October. Fill in the details and post the records now to your local Environment Agency office. Check to see whether your licence for spray irrigation stops on 31 October, so you do not abstract water beyond your licensed period.

Oxalis If corms are showing signs of mould at compost level spray the tops with Rovral WG, Switch or chlorothalonil.

Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Read These Next



Brightening up gardens in autumn, these daisies are seen as a gem in the gardener's arsenal, writes Miranda Kimberley.

Are tree suppliers seeing the benefit of the health message of trees?

Are tree suppliers seeing the benefit of the health message of trees?

The message that health, the environment and business all benefit from trees is finally getting through, but are nurseries seeing an upturn? Sally Drury reports.



These evergreen trees and shrubs have decorative bark and can flower and fruit simultaneously, says Miranda Kimberley.

Opinion... Why no-deal Brexit should worry you

Opinion... Why no-deal Brexit should worry you

Whether you voted leave or remain all those years ago, a "no-deal" Brexit should worry you.

I will not be importing oaks this season. Will you?

I will not be importing oaks this season. Will you?

I find myself in a difficult situation. A few weeks ago I was fortunate to be present to hear details of imminent changes to regulations concerning Oak Processionary Moth (OPM) and oak trees. I heard details, asked questions and probed the implications of these changes. That may not sound like a difficult position to be in, yet I am uneasy.

Opinion... Better targets to tackle pollution

Opinion... Better targets to tackle pollution

Lobby groups jumping onto fashionable campaigns, often to promote their own interests, can do much more harm than good. Take, for example, the move against black polythene plant pots and containers.

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

Horticulture Week Top 60 Ornamentals nurseries

See our exclusive RANKING of ornamentals nurseries by annual turnover plus the FULL REPORT AND ANALYSIS

Tim Edwards

Boningales Nursery chairman Tim Edwards on the business of ornamentals production

Read Tim Edwards

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