• Sulfur, water and biological controls are all organic methods of fighting pear tree pests.pear tree image by samantha grandy from Fotolia.com
  
  Pear trees can come under attack by a variety of pests and fungi. The pear's fruit may attract some, while others can grow deep into the tree's bark and damage it. Pesticides can protect fruit trees of all kinds, and many farmers with large orchards use them for the sake of efficiency. However, if you have only a few pear trees, you may prefer a more organic pest control method. There are several methods that protect your trees against many threatening pests.
  
  

Sulfur

• Several kinds of fungus, such as the pear scab, attack pear trees, damaging the leaves, branches, and fruit. The organic treatment is a sulfur solution. Sometimes, the sulfur is combined with lime to make it more effective.
  
  

Biological Controls

• Biological controls refer to raising other insects that will eat the insects that damage pear trees. Purchase the eggs of wasps and other predatory insects and sprinkle them around the trees, but most farmers choose to simple allow certain patches of grass to overgrow. Clover, pea, and vetch patches all make ideal breeding grounds for the insects that eat your pests.
  
  

Surround

• Surround is the brand name for an organic treatment made from a specific type of clay. The U.S. Department of Agriculture developed this film. It coats the bark of the pear tree and protects the trees from series insect infestation. It is a common treatment for pests, such as the destructive pear psylla.
  
  

Water

• Water is useful and inexpensive if you only have a few trees. A strong jet of water knocks off larva, worms, and aphids, saving the tree damage in the short term. Do not use strong jets of water on weak trees or fruit where it can do damage.
  
  

Soap Sprays

• If you aphid problems or other insects that are small and difficult to fully eradicate, use a soap spray. Mix an organic soap with water and spray it on the leaves of the pear tree. It will not damage the tree itself, but it will kill or drive away small pests.