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Infected leaves often feel sticky, and the sap can be colonised by black sooty mould. Bad infestations can leave a plant vulnerable to attack by other pests and diseases (e.g. sooty mould). Virus diseases can be spread by aphids as they move from one infected plant to another.

Spot them

Usually small, fat, green insects. However, aphids can also be black, yellow, pink, greyish-white and brown. They are all about 2mm long, round and full of sap.

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Are these aphids please?

Question from Fran street

My poor tree is withering are these aphids and how can I help?!

  • Views: 952
  • Replies: 1
  • Posted: Wed. 12th June 2013 17:36
  • Last reply: Tue. 11th March 2014 16:34

Other approaches

Comment from Robert Heritage

Ant colonies form a symbiosis with Aphids and actively farm, spread and protect Aphid colonies. You may like to try ant Nematodes to control the ant populations in your garden and this may in turn help to limit the numbers of Aphids.

Photo credit: http://www.pixabella.com/archives/99-an-ant-farming-aphids.html

  • Views: 1067
  • Replies: 0
  • Posted: Fri. 15th October 2010 08:33

Green Fly in green house

Question from jean lamb

I grew marigolds in the green house last year and had no green fly. This year peppers and tomatoes have green fly and I haven't planted any marigolds yet! Anybody had success with pest control with companion planting?

  • Views: 1501
  • Replies: 1
  • Posted: Sat. 29th May 2010 10:14
  • Last reply: Tue. 1st June 2010 12:25

RE: White snowstorm bacopa

Question from charlene tellez

I am a beginner and not sure about how to take care of my bacopa plant. It feels dry and is turning brown on top but still green on long flowing stems. it is in a hanging basket sitting on my window ceil. also, im not sure how to prune it. can you help??

  • Views: 11060
  • Replies: 1
  • Posted: Wed. 9th September 2009 17:07
  • Last reply: Thu. 10th September 2009 10:23