Q.i planted 2 old fashioned lilacs 6 years ago
I planted 2 old fashioned lilacs 6 years ago. They have never bloomed and not getting real big. What do I need to do to wake them up? I live in Buffalo, Texas and both are planted in sun.
If they are truly "old fashioned" lilacs, I would guess that you're too far south for them to do well. Here's an article on growing lilac, so you can check your cultural set up: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-care-growing-and-planting-lilac-bush-plants.htm
There are lilac cultivars, and plants that are lilac-type, that grow in the south. This article has some information: http://extensiongardener.ces.ncsu.edu/extgardener-in-search-of-lilacs-for-the-south/