Our Trumpet tree is dropping leaves & not blooming. I cleard away a suffoccating vine/ will it come back lush as last year?

Our Trumpet tree is dropping leaves & not blooming. I cleard away a suffoccating vine/ will it come back lush as last year?
Arborist Russ Talley suggests that you read the following for Turmpet plant. Please inspect the leaves that have fallen off to determine if they have any marking that would indicate insect problems or if there is any white powdery substance. If this contines to be a problem & the Turmpet isn't coming back as nicely as you had hoped, it might be time to check your soil PH. The Trumpet prefers a PH of 5.5-7.5. As noted in the article following, if there are any leaves with a white powdery substance on them, make sure to rake them up & remove them from the area. Our heat wave & drought have been terrible this summer, the Trumpet prefers a little dryness to being saturated, but during this hot dry time, make sure it is getting sufficient water on a regular basis.

Trumpet Vine
Light: Full Sun
Soil: Sandy to clay; ph 5.5 to 7.5
Moisture: Moist to dry
Hardiness: Zones 4 to 9

Problem: Leaves are covered with a white powder. Late in the growing season, leaves become covered with a powdery white dust, usually starting on the lower leaves and moving upward. This occurs most often after a period of humid weather.
Cause: Powdery mildew is a fungal disease that feeds on the upper leaf surface but doesn?t penetrate into the leaf itself. When the disease doesn?t show up until late in the growing season, it does little damage. But a plant that is infected in midsummer or earlier can be weakened and stressed.
Solution: Spray and practice good garden sanitation to control powdery mildew. Provide proper growing conditions for new plants.
? If the disease strikes early in the growing season, spray the plant with baking soda solution. (2 tablespoons baking soda. 1 tablespoon vegetable oil. 1 cup plus 1 gallon warm water. Mix baking soda and oil in 1 cup of warm water and stir. Add to 1 gallon of water and mix. Pour into a clean sprayer.)
? In fall, rake up and dispose of infected foliage that drops to the ground.
? Plant new vines in a sunny site.

Problem: Stems are studded with colonies of white insects. In summer, scattered clusters of white, cotton-covered insects can be found on stems. They look like mealybugs but jump when disturbed. If the infestation is severe, leaves become yellow and are coated with a sticky substance.
Cause: Plant hoppers are gray to brown bugs that lay eggs in bark slits in late summer. The egg laying may cause some stem tips to die. The larvae hatch in spring and feed on the stems, covering themselves with a waxy substance. A sticky material, called honey dew, is excreted by the larvae. There is usually only one generation per year.
Solution: Depending on the severity, either ignore the plant hoppers or spray them.
? With a light infestation, damage will be negligible and the insects can be ignored.
? If there are enough pest to cause leaf yellowing, spray the plant with the botanical insecticide neem or pyrethrum. Follow label directions carefully.

Source: The Garden Problem Solver Copyright 1999 The Reader?s Digest Association, Inc.