Barry:I am sure your Violette is in pot.
It is a little late when planted inground,here in Zone 6.
When in ground the tree retard it's fruiting and leaf buds,intentionally as a response to cold winter ,in order to survive.
I have 2 old inground trees,and they started forming embryos, one week ago only, later than other cultivars,that have fruits as large as small plums at this point.
Yet,it is enough early,that will ripe just fine at about September 1st.