Insects harm trees by leaving their harmful bacteria which can spoil tree's branch or leaves and some insects are also capable in making whole into the tree's branch.Some insects like termite can spoil trees by eating their wooden branches.
I used Woolly Whacker from www.woolly-whacker.com to get rid of the adelgid aphid in my yard. It took 2 treatments but it lasted until the next season.
insects harm trees by eating the bark and the good stuff off of it!!
harmful insects are very harmful to plants
Insects are harmful to crops because they can be carrying dirty kinds of bacteria, and they can cause diseases in plants and kill plants.
the viroids harm the plants that are ifected with them by giving the plants some harmful thing
because of they poisunois plants
they harm the plants
lady bugs are not harmful because they do not harm humans and red and orange are warning colours for insects
every single insect is harmful 2 plants so r u fattys
In many areas, grasshoppers are considered harmful insects. They have the ability to devastate large areas of crops and other important plants.
Some benefits of insects are: pollination of plants by some insects, some beneficial insects eat other, harmful insects.
A Ladybird
lady bug
Yes, as they provide many beneficial functions. A couple of examples are the pollination of food crops, and as important important members of the food chain. There are many insects that are beneficial to both humans and plant life. For example: * Some insects are beneficial to farmers and gardeners since they eat other insects that are harmful to plants. One example is the ladybug; they eat aphids that can kill many plants. Some farmers have begun "going green" in raising their crops by bringing in the insects that eat the ones that harm plants. This allows them to raise crops with out harmful poisons. * Dragonflies eat mosquitoes, which we all know are harmful to both humans and animals.
I wouldn't recommend spitting on your plants. There are some insects that lay eggs on plants that are known to harm plants called aphids.