Snowball Viburnum Leaves And Flowers Are Sparse

Question From: LOUISIANA
Q: My snowball viburnum does not have a lot of leaves. It is about 4 years old and has only made a few flowers each year and the leaves are sparse. As far as I can tell it does not seem to have a disease unless its at the roots. It has mulch around it. It gets at least 6 hours of sun. I live in south LA where it humid and hot in summer. It gets water when it does rain much in hot weather. It only makes a few blosooms each year. Any ideas about what is going on?

A: My guess is lack of water. Snowballs grow best in well drained, organic rich soil. Keeping the soil moist but not soggy. Best And Happy Yardening, Nancy.