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      Outsider Box - Surprise Box - Mix of unique plants - 8-12 plants per set
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      Scindapsus Pictus 'Argyraeus' – Spotted Ivy - 15-25 cm
      Ficus Lyrata – Fiddle-leaf Fig – 30-130 cm
      Ficus Lyrata – Fiddle-leaf Fig – 30-130 cm
      Surprise Box – Mix of Houseplants – 5-10 plants per set
      Surprise Box – Mix of Houseplants – 5-10 plants per set
      Ficus Ginseng – Bonsai-Feige, 40–70 cm
      Ficus Ginseng – Bonsai-Feige, 40–70 cm
      Ceropegia woodii – Lantern flower - 14 cm pot, 50 cm tall
      Ceropegia woodii – Lantern flower - 14 cm pot, 50 cm tall
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      Yellow Kiwi “Golden Kiwi” (Actinidia deliciosa), 2 plants, 50 cm tall
      Yellow Kiwi “Golden Kiwi” (Actinidia deliciosa), 2 plants, 50 cm tall
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      Mini kiwi “Issai” – Actinidia arguta, 2 plants, 11 cm pot, approx. 40 cm height
      Apple tree “Elstar” – in a pot, 90 cm tall
      Apple tree “Elstar” – in a pot, 90 cm tall
      Fig tree “Little Miss Figgy” (Ficus carica) Organic – 23 cm pot, approx. 50 cm tall
      Fig tree “Little Miss Figgy” (Ficus carica) Organic – 23 cm pot, approx. 50 cm tall
      Bay laurel (Laurus nobilis) – 35–130 cm
      Bay laurel (Laurus nobilis) – 35–130 cm
      Trachycarpus fortunei – robust, hårdfør palme, 21 cm potte, 90-100 cm højde
      Trachycarpus fortunei – robust, hårdfør palme, 21 cm potte, 90-100 cm højde
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      Fig tree “Brown Turkey” (Ficus carica) – 19cm pot, 90cm tall
      Fig tree “Brown Turkey” (Ficus carica) – 19cm pot, 90cm tall
      Nobilis gran – mini juletræ, 30–60 cm
      Nobilis gran – mini juletræ, 30–60 cm
      Yellow Kiwi “Golden Kiwi” (Actinidia deliciosa), 2 plants, 50 cm tall
      Yellow Kiwi “Golden Kiwi” (Actinidia deliciosa), 2 plants, 50 cm tall
      Mini kiwi “Issai” – Actinidia arguta, 2 plants, 11 cm pot, approx. 40 cm height
      Mini kiwi “Issai” – Actinidia arguta, 2 plants, 11 cm pot, approx. 40 cm height
      Apple tree “Elstar” – in a pot, 90 cm tall
      Apple tree “Elstar” – in a pot, 90 cm tall
      Hibiscus syriacus 'Tricolour' – standardtræ til terrasse og have, 19 cm potte, 90 cm højde
      Hibiscus syriacus 'Tricolour' – standardtræ til terrasse og have, 19 cm potte, 90 cm højde
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      Fig tree “Brown Turkey” (Ficus carica) – 19cm pot, 90cm tall
      Fig tree “Brown Turkey” (Ficus carica) – 19cm pot, 90cm tall
      Outsider Box - Surprise Box - Mix of unique plants - 8-12 plants per set
      Outsider Box - Surprise Box - Mix of unique plants - 8-12 plants per set
      Scindapsus Pictus 'Argyraeus' – Spotted Ivy - 15-25 cm
      Scindapsus Pictus 'Argyraeus' – Spotted Ivy - 15-25 cm
      Ficus Lyrata – Fiddle-leaf Fig – 30-130 cm
      Ficus Lyrata – Fiddle-leaf Fig – 30-130 cm
      Surprise Box – Mix of Houseplants – 5-10 plants per set
      Surprise Box – Mix of Houseplants – 5-10 plants per set
      Ficus Ginseng – Bonsai-Feige, 40–70 cm
      Ficus Ginseng – Bonsai-Feige, 40–70 cm
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      Parasitic wasps against codling moths
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      Predatory mites against thrips for hanging or scattering
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      Predatory mites against spider mites for hanging or scattering
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      Predatory mite mix against thrips & spider mites for hanging or scattering
      Predatory mite mix against fungus gnats & red bird mites – loose product
      Predatory mite mix against fungus gnats & red bird mites – loose product
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      Predatory mites against thrips – loose product
      Predatory mite mix against thrips & spider mites – loose product
      Predatory mite mix against thrips & spider mites – loose product
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      SF nematodes against fungus gnats, codling moths & ants
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      HB nematodes against black vine weevils and grubs
      SF nematodes against codling moth
      SF nematodes against codling moth
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      SF nematodes against ants
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      SF nematodes against flea beetles
      SC nematodes against mole crickets, meadow crane flies and cutworms
      SC nematodes against mole crickets, meadow crane flies and cutworms
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      Food moth trap (10 value pack)
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      Bread beetle window trap with special attractant
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      Fruit fly window trap with special attractant
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      Fungus gnat window trap with special attractant
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      Fly window trap with special attractant
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      Mosquito window trap with special attractant
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      Larder beetle trap with special attractant
      • against ants
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      Paper fish trap with pheromone attractant
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      Pheromone attractant replacement foils for sticky traps (3 pieces)
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      Bread beetle trap with pheromone attractant
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      Larder beetle trap with pheromone attractant
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Power Neem oil against Colorado potato beetles Power Neem oil against Colorado potato beetles
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Skadedyrsordbog – Green Guardia

Colorado kartoffelbille: Identifikation, fødeskader og naturlig handling

Colorado-kartoffelbillen (Leptinotarsa decemlineata) kan på kort tid forårsage alvorlige skader på kartoffelplanter. Især larverne forårsager massiv bladskade. Her lærer du, hvordan du pålideligt kan identificere Colorado-kartoffelbiller, æg og larver, hvilke skader der er typiske, og hvilke naturlige metoder der kan hjælpe.

ⓘLeptinotarsa decemlineata #Colorado kartoffelbillelarver · Bladskader på kartofler

Hvad er Colorado-kartoffelbillen?

Coloradobillen er en slående gul- og sortstribet bladbille. Den overvintrer i jorden og dukker op igen på kartoffelplanter om foråret/tidlig sommer. Efter æggene er lagt, klækkes larverne, som forårsager mest skade.

kartoffelskadedyr Larverne lever kraftigt overvintrer i jorden

Sådan identificerer du kartoffelbiller, æg og larver

  • Voksen bille: gul med sorte langsgående striber, rund-oval
  • Æg: lys gul-orange, i grupper på undersiden af bladene
  • Larver: rødlig til orange, tyk, med mørke pletter på siderne
Green Guardia-tip: Vær særlig opmærksom på bladenes undersider. Tidlig søgning og fjernelse af æg vil forhindre den værste skade fra larver.

Typiske skadesmønstre

  • Uregelmæssige fodringsmærker på bladene
  • Hurtig afløvning (bladene reduceres kraftigt)
  • synlige larveklynger på individuelle planter
  • svækkede planter og reduceret knolddannelse

Hvilke planter er berørt?

  • Kartofler (hovedvært)
  • andre natskyggeplanter (f.eks. aubergine)
  • Lejlighedsvis også tomater (afhængigt af region/angrebstryk)

Hvorfor opstår der angreb?

  • Overvintring i jorden nær vækstområdet
  • Et varmt forår fremskynder udviklingen
  • Lille kontrol: æg/larver forbliver uopdagede.
  • store kartoffelafgrøder i området

Naturlig forebyggelse

1. Tjek regelmæssigt

  • Tjek bladenes underside ugentligt fra knopspring og fremefter.
  • Tjek oftere, især på varme dage.

2. Sædskifte og placering

  • Dyrk ikke kartofler på samme sted hvert år.
  • Øg afstanden til tidligere års områder, hvis det er muligt.

3. Styrk planter

  • en balanceret næringsforsyning
  • konstant vandforsyning (ikke "stress"-tørhed)

Skånsomme foranstaltninger til bekæmpelse af angreb

  • Fjern ægklaser fra undersiden af bladene
  • Indsaml biller og larver (morgen/aften)
  • Fjern stærkt angrebne blade selektivt.

Nyttige insekter og naturlige fjender

I en naturlig have er forskellige modsatrettede kræfter med til at reducere trykket. Disse omfatter frem for alt: fugle, løbebiller og andre rovdyr. Det mest praktiske aspekt ved kartoffelbiller er dog, at... mekanisk kontrol (Saml æg/larver), fordi stadierne er tydeligt synlige.

Hvorfor håndplukning er så effektivt: Coloradokartoffelbiller lægger æg i grupper – hvis du fjerner æggebillerne tidligt, forhindrer du mange larver i at klække på én gang.

Ofte stillede spørgsmål om Colorado-kartoffelbillen

Hvornår er kartoffelbiller mest almindelige?

Normalt i slutningen af foråret til sommeren, afhængigt af vejr og region. Efter varme perioder kan æg og larver udvikle sig særligt hurtigt.

Hvor kan jeg finde æggene?

Næsten altid på undersiden af bladet – som gul-orange æggepakker i grupper.

Hvor hurtigt kan en plante blive fuldstændig afbarket?

I tilfælde af alvorlig larveinfektion er spredningen meget hurtig – derfor er tidlig overvågning afgørende.

Hvad er det bedste første skridt i tilfælde af en angreb?

Fjern æg og saml larver. Fortsæt med at kontrollere regelmæssigt bagefter for at sikre, at der ikke overses nye kuld.

Hurtigt overblik

  • Skadedyr: Colorado kartoffelbille
  • Areal: Køkkenhave (kartofler)
  • Skadesmønster: Bladskader til fuldstændig afløvning
  • Fokus: Fjern æg, saml larver
✓ Tidlig opdagelse = mindre skade

Typiske tegn

  • Æggekapsler på undersiden af bladene
  • rødlige larver med pletter
  • hurtigt stigende fodring
  • flere larver på én plante

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