Let's Keep Your Roses Pest And Disease Free

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Always a difficult one! For most of the year you need to spray every two weeks, mostly as a preventative spray.

Different pests and diseases appear at different time of year, so the pesticides used will differ. It would be impossible to list every possible pest or disease which may affect your roses, so we have given a list of the commonest ones, and their remedies.

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Pest Control Advice

Bollworm – Ludwig’s Insect Spray plus Pyrol OR Asadirachtin = Bioneem.

C.M.R./Flower Beetles or Fruit Chafer – A direct contact spray of natural pyrethrins (add a wetter to this) OR Hand Picking (Wear gloves when doing this!)

Chafer Beetles – As for C.M.R – apply just after sunset when they appear. OR you can use a light trap – hang a light somewhere near the roses, suspended over a large basin or old bath of water with a little paraffin or cooking oil poured on – switch light on at dusk, off in the morning. (Make sure you use a proper outdoor fitting!)

Aphid  – Ludwig’ Insect Spray, Pyrol, Vegol, Margaret Robert’s Organivc Insecticide or Bioneed. You can also spray with soapy water – 5ml. dishwashing liquid in 1 litre water.

Thrips – Can appear all year, more in hot, dry conditions. Spray with Canola Oil and/or natural pyrethrins.

Mites – The commonest are red spider mites and two-spotted spider mite. They are very tiny and difficult to see with the naked eye!   Hot dry weather exacerbates the problem. Regular wetting of the underside of the leaves helps tremendously. Spray with Ludwig’s Rose Spider Mite spray, Margaret Robert’s Organic Insecticide and Vegol, OR Bioneem.

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Disease Control Advice

Powdery Mildew – New young, soft growth is more susceptible (don’t overfeed with too much nitrogen). The old remedy (which still works) is Sulphur. Use Kanguard 94 or Margaret Robert’s Organic Fungicide. Start spraying at the first sign of infection, before it gets a hold.

Black Spot – Climatic conditions play a big part in the appearance of Black Spot. Hot and humid weather brings it along! Spray with fungicides containing copper as a preventative measure when conditions are right for its formation.

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What To Expect In Which Month

Each month different pests or diseases can appear – Just a short list of what to look for through the different months of the year.

January

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  • Black Spot
  • Beetles
  • Boll Worm
  • Red Spider Mite

February

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  • Black Spot
  • Beetles
  • Boll Worm

March

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  • Black Spot
  • Beetles
  • Boll Worm

April

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  • Black Spot
  • Beetles
  • Boll Worm

May

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  • Mainly Black Spot

June

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  • Mainly Black Spot

July

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Spray bare stems after pruning to kill insect eggs and fungus spores.

August

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Spray bare stems after pruning to kill insect eggs and fungus spores.

September

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  • Aphids
  • Thrips
  • Boll Worm
  • Powdery Mildew

October

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  • Powdery Mildew
  • Beetles
  • Boll Worm

November

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  • Aphids
  • Powdery Mildew
  • Beetles
  • Boll Worm
  • Black Spot
  • Spider Mite

December

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  • Aphids
  • Powdery Mildew
  • Beetles
  • Boll Worm
  • Black Spot
  • Spider Mite

More On Rose Care

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A Few Favourites

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Sunburst Yellow - Miniature Rose BushSunburst Yellow - Miniature Rose Bush

Sunburst – Yellow

R75

Sunburst – Yellow

Miniature Rose Bush

Knee Height Growth - Miniature Rose Bush - Just Roses Slight Frangrance Rose Bush - Just Roses
Blooms: High quality petite blooms, flowers from spring till winter.
Colour: Yellow – light crimson petal tips
Growth: A hardy little bush, well suited for containers
Fragrance: Little to none

Sunburst Pale Pink - Miniature Rose BushSunburst Pale Pink - Miniature Rose Bush

Sunburst – Pale pink

R75

Sunburst – Pale Pink

Miniature Rose Bush

Knee Height Growth - Miniature Rose Bush - Just Roses Slight Frangrance Rose Bush - Just Roses
Blooms: High quality petite blooms, flowers from spring till winter.
Colour: Pale pink
Growth: A hardy little bush, well suited for containers
Fragrance: Little to none

Simplicity - Floribunda Garden Rose BushSimplicity - Floribunda Garden Rose Bush

Simplicity

R55

Simplicity

Floribunda Garden Rose Bush

Waist Height Growth - Garden Rose Bush - Just Roses Slight Frangrance Rose Bush - Just Roses
Bloom: Free flowering, semi-double, lightly cupped produced in clusters of 5-15 flowers
Colour: Pink
Growth: Healthy fast growing plant, vigorous and rather upright
Fragrance: Light and sweet
Origin: Warriner, US, 1978

Pascali - Hybrid Tea Garden Rose BushPascali - Hybrid Tea Garden Rose Bush

Pascali

R55

Pascali

Hybrid Tea Garden Rose Bush

Shoulder Height Growth - Garden Rose Bush - Just Roses Slight Frangrance Rose Bush - Just Roses
Bloom: Shapely, slow opening with tough petals. Borne singularly on strong stems
Colour: White, Ivory
Growth: Easy to grow plant is tall and narrow, with large dark leaves.
Fragrance: Light and sweet
Origin: Lens, Belgium, 1963

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