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South Australia - 25th September 2000

 




 

 

 

 

 

 

 

 

  • With leaf-burst on many deciduous trees taking place at present it’s time to remove any Mistletoe that is evident. They appear as clusters of different shaped leaves in the canopy and many are evergreen, so easily detected at present. Common in Elms, Maples, Gums and Citrus in this area, as well as many other tree types.
  • A clean cut on a branch below the Mistletoe union, will generally add many years to the life of your host tree. Unless removed the parasitic Mistletoe will generally kill the host tree and amazingly fast on some varieties. At the very least it will reduce the ability of fruiting varieties to yield a crop.
  • Aphids are on the wing and moving in on the soft rose buds at present. Unless you wash them off with a strong jet of water or spend a little time squeezing them or at worst spray them with a NIMBY deterrent, such as a Pyrethrum spray, they will at the very least, disfigure your early blooms.
  • There are good colonies of Rose Aphid Wasp in this area that feed on the young fat Rose Aphids, but they simply cannot keep up early in the season and need a little help, if you aim to control most of your Rose Aphids. You might ask why control them anyhow? Well they are currently sipping away on the leaf juices of the lush soft rose foliage you provide, aimlessly spreading plant viruses and sapping the vigour of your Roses and distorting blooms as they unfurl.
  • The Black Aphids on your Citrus and the Aphids on your Peach trees and Camellias are all different varieties and not predated upon by the Rose Aphid Wasp, so we do not have such an abundant control as we have on Roses. The little black and yellow honeyeaters do feed on them though, when they are raising their young in spring, which is why a strong jet of water will return a hungry predator to your garden hour after hour.
  • I had a letter from a concerned reader that my advice about recommending Dipel™ would be injurious to his Grey Fan-tail friends. I think the point was missed, that Dipel™ is a stomach rotting Bacteria which only effects the intestines of caterpillars and not those of higher creatures in the food chain that predate on the kill.