Capsid bugs - Bright-green insects feed by piercing holes on buds and young leaves of Caryopteris, choisya, dahlia, forsythia, hydrangea and roses. Control with Calypso (EAMUs required), Decis, Dursban WG, Hallmark WZT (EAMU 2008-2944) or Toppel 100 (EAMU 2013-2410).
Ronstar 2G - The end use date is 30 June. Ensure that bark mulches are deep enough and completely cover compost surfaces.
Tortrix moths - Once identified, control with Conserve, Dimilin Flo, DiPel DF, Explicit (EAMU 2011-2090), Insegar WG, Pyrethrum 5EC, Runner (EAMU 2012-0448), Toppel 100 (EAMU 2013-2410) or Tracer (EAMU 2008-2908).
Aphids - Increase Aphidius spp. on protected crops alongside selective insecticides such as Aphox, Chess WG (EAMU 2013-2016), Majestik, Savona and SB Plant Invigorator. Large pest populations will require a spray before predator levels are increased.
Phoma - Infections cause tip and stem dieback on ceanothus and Viburnum. Control with Octave, Serenade ASO (EAMUs required), Switch or Signum (EAMU 2012-2141).
Rose black spot - Control on outdoor crops with Amistar (EAMU 2009-0443), Signum (EAMU 2012-2141), Stroby WG Switch or Systhane 20EW.
Scab - Check Chaenomeles, Crataegus, ornamental Malus and pyracantha. Use prediction tables for timely applications of protectants including Bravo 500 (EAMU 2011-1130), Captan 80WDG (EAMU 2014-2510, nursery fruit trees only), Scala (EAMU 2011-1315), Systhane 20EW or Topas.
Rust - Control using Amistar (EAMU 2009-0443), Bumper 250EC (EAMU 2014-1274), Signum (EAMU 2012-2141) or Systhane 20EW if seen.
Spider mites - With higher humidity, use Naturalis-L, which will also control aphid, whitefly and thrips. In warm weather and for non-IPM systems, include Borneo (EAMU 2008-1216) in your spray programme. It controls all moving stages, has an ovicidal effect on female adults and can persist for up to 60 days on foliage.