purklize Posted September 11, 2011 Report Share Posted September 11, 2011 I am in the process of switching from soil to DWC (keeping flowering soil plants alive but not starting any new ones). Root aphids have been a huge problem. I've been dumping 1/4tsp rosemary oil with a squirt of soap in a gallon of water, watering with that once a week... it helps to control them but certainly doesn't completely eradicate them, there's always a bunch of survivors (air pockets in soil, etc help them survive). I have one plant in DWC (hydroton is the growing medium). I took it out of the bucket and dunked it in a crockpot (make sure the water level is over the hydroton!!!) with that same rosemary/soapy water formula for 15 minutes. I saw one lonely root aphid try to crawl out of the water onto a hydroton pellet, which kept rolling around and dumping the aphid back in. When I lifted the net pot out of the water, hundreds of dead root aphids poured out, huge, fat, DEAD, bastads. AWESOME! I have seen no sign of their return, though since it is in a tent with infested soil plants I will continue to dunk once a week for a while. Perhaps there is a way to actually deal with them after all. :thumbsu: Quote Link to comment Share on other sites More sharing options...
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