Question
HI. I have an.orchid tree native to Formosa.Here in central coastal Florida it is common.The tree is approx 4 years old and grows rapidly.I have noticed that several other trees are in heavy bloom,in the area. Mine is hardly blooming.One tree I know of receives no  help water or fertilzer the other is well taken care of and both are full of blooms.I did trim it back this fall to see if it helps.If you have any suggestions please let me know.Thanks

Answer
Normally a 4 year old tree can be left on it's own to find nutrients without having to fertilize manually. This is mainly done to young trees. Obviously, if your soil is deficient in one or more nutrients that would affect plant growth and flowering.

The first step would be to have a soil test done at your local county extension office (IFAS) :

http://www.ifas.ufl.edu/extension/

It should show if any nutrients are missing. Another issue which the soil test will show is the pH value. At pH values which are too low or too high the nutrients may not be available to the plants for uptake, even if readily available in the soil.

In any event, if you want to give it a try, drill small holes 6-8" deep around the perimeter of the tree starting 1-2 feet inside the edge of the canopy and going 1-2 feet out. Pour some regular 10-10-10 fertilizer into these holes and cover with soil. A 6 foot tall tree should have about 100 holes, or similar, drilled and filled.

You can also broadcast fertilizer evenly around the base of the tree (1-2 feet inside and outside the canopy of the tree) instead of drilling and incorporating. Watch out for nearby perennials and lawns.