Question
Hi,melissa i want know that there are hundreds of ants used to roam on my cheery trees whole day,why this happens can it cause injury to my tree.

Answer
Dear Vivek,  Usually when there are ants around, there is a reason why they are there.  Now in America, we have fire ants and they are absolutely everywhere, and you just have to keep treating the mounds with insecticide.  But when you start noticing unusual behavior like ants climbing around in the trees, it is usually because there is something wrong with the tree.  The ants are probably there for one of two reasons: either they are there because there is an insect pest like aphids or scale on the tree producing a honeydew secretion that ants crave, or they are there for sap leaking from the tree which is probably a sign of tree borers.  The problem then becomes one of deciding which type of pest is bothering your tree and when you get rid of those pests, then the ants will leave as that food supply will be gone.  Aphids can be almost any color, but they appear as a type of plant lice, and usually are found heavily on new leaves and new growth on the tree.  They are small and scatter easily.  Scale appears as bumps, not the little regular bumps that are on a cherry tree trunk, but randomly placed different looking bumps, often located on smaller stems, the notches between two small twigs, or occasionally on the bottom of leaves.  They don't move and must be killed using horticultural oil to smother them.  Borers are often very unusual large insects, sometimes with long 'horns' for antennae, but you will notice holes in the tree trunk with sap running out which attracts the ants.  I do not know what pesticides you have available, but you will probably need to spray the tree to get rid of the pests and the ants.  The important thing to do is to look closely at the tree and see what type of pests you have and then use a spray that kills that type of insect.  You may be able to find NEEM which is a safe organic pesticide which kills most everything.  After you look at your tree, you may want to write back for additional help in identifying the pests.  Good luck, Melissa