Pest and Disease Control – General Guidelines

To be effective, the spraying of roses for the control of pests and diseases needs to be carried out properly and with the correct understanding of both the pest and the applicable pesticides. Pesticide is the generally understood term for chemical compounds which control insects and diseases on plants.

Read more about environmentally responsible pest and disease control, benefical insects and much more in Johan Gerber’s book called The Garden Guardian, Aardvark Press.

Pesticides are dived into:

  • insecticides – for the control of insects
  • fungicides – for the control of fungus diseases such as powdery mildew and black spot
  • acaricides (these control red spider)

For best results spray regularly:

  • In warm dry conditions – at least fortnightly
  • Rainy, humid weather conditions – on a weekly basis.

To be able to control the different pests and diseases one combines several pesticides in a ‘COCKTAIL’ to avoid having to spray the roses several times in one week. Pests and Diseases become resistant to specific chemicals if these are used continuously. For this reason it is good practice to alternate the pesticides.

  • Approximately one litre of spray solution is needed for 10 roses.
  • Mix powders first in a small quantity of water then add to the rest of the water.
  • Shake the spray pump well before spraying
  • Do not premix and store any pesticides – use immediatley

Warning : Pesticides can be poisonous – so please practice caution when using them.
Keep out of reach from children. Read the instructions carefully

COCKTAIL 1 for 10 litres of water – highly recommended

For powdery mildew, black spot, aphids, boll worm, stem borer, thrips and beetles.
Mix the following in 10l of water: (10 litres of spray mixture is enough for approx. 90-100 roses)

  • 50 ml LUDWIGS INSECT SPRAY+
  • 12 ml CHRONOS,
  • 12 ml LUDWIGS SPRAY STAY,
  • optional extra 10 g Phostrogen as a foliar feed (25 g MultiFeed)

COCKTAIL 2 for 10 litres of water

For black spot, downy mildew, aphids, boll worm, beetles, thrips & stem borer.
Mix the following in 10l of water: (10 litres of spray mixture is enough for approx. 90-100 roses)

  • 20 g DITHANE WG,
  • 12 ml LUDWIGS SPRAY STAY,
  • 10 ml GARDEN RIPCORD
  • 20 ml FUNGINEX