Q.What is best to control insects etc on pomegranate trees
When should flowers appear

Certified GKH Gardening Expert
There are many things that you can do for insect control. This article will help you to craft some with ingredients that you may already have around the home: https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm
This collection of articles will give you all of the information you need to know about pomegranate trees, and how to grow them: https://www.gardeningknowhow.com/category/edible/fruits/pomegranate