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Schädlinge und Krankheiten an Pflanzen erkennen – Bildübersicht

Reference images of the most common pests and diseases on house, balcony and garden plants – to recognise them on your own plant. Each image with author and source.

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Pests

8 topics

  • Aphids

    3 images
    • Aphid colony on a rose shoot

      Photo: Whitney Cranshaw, Colorado State University, Bugwood.org · CC BY 3.0 US · Source

    • Aphids on young shoot tips (chamomile)

      Photo: Josef Schlaghecken · CC BY-SA 4.0 · Source

    • Black bean aphids, magnified

      Photo: Alvesgaspar · CC BY-SA 3.0 · Source

  • Spider mites

    3 images
    • Spider mite damage: fine pale stippling, leaves turn yellow (bean)

      Photo: Rasbak · CC BY-SA 3.0 · Source

    • Heavy infestation: fine webbing on the shoots (sweet pepper)

      Photo: Rasbak · CC BY-SA 3.0 · Source

    • Spider mite, highly magnified (red form, about 0.5 mm)

      Photo: Gilles San Martin · CC BY-SA 2.0 · Source

  • Webbing – suspected spider mites

    2 images

  • Mealybugs

    3 images

  • Scale insects

    3 images

  • Thrips

    3 images
    • Thrips with typical dark excrement spots (here on a lemon)

      Photo: Petr Kosina · CC BY 4.0 · Source

    • Thrips damage on a leaf: pale to brown, scarred feeding marks (hydrangea)

      Photo: m.borden · CC BY-SA 2.0 · Source

    • Western flower thrips on a leaf, highly magnified

      Photo: Frank Peairs, Colorado State University, Bugwood.org · CC BY 3.0 · Source

  • Whiteflies

    3 images

  • Fungus gnats

    2 images
    • Fungus gnat (Bradysia), magnified

      Photo: James K. Lindsey · CC BY-SA 3.0 · Source

    • Fungus gnats lay their eggs in moist material (here a soggy log)

      Photo: Katja Schulz · CC BY 2.0 · Source

Diseases and deficiencies

3 topics

  • Powdery mildew

    2 images
    • Powdery mildew: white, floury coating on the leaf (squash)

      Photo: Dmitry Brant · CC BY-SA 4.0 · Source

    • Powdery mildew: first white patches on the leaf (whitebeam)

      Photo: Stephen James McWilliam · CC0 · Source

  • Grey mould and tissue decay

    3 images
    • Grey mould: grey, fuzzy coating on a strawberry

      Photo: Rasbak · CC BY-SA 3.0 · Source

    • Grey mould on a rose flower

      Photo: Flowersabc · CC BY-SA 2.0 · Source

    • Tissue decay from grey mould: brownish-black areas on the leaf (endive)

      Photo: Josef Schlaghecken · CC BY 4.0 · Source

  • Blossom-end rot

    2 images
    • Blossom-end rot: dark, sunken patch at the fruit tip (tomato)

      Photo: A13ean · CC BY-SA 3.0 · Source

    • Blossom-end rot on a tomato

      Photo: Fructibus · CC0 · Source

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