ie there is a differenence - and one that fits with my experience - plants
that like full sun rarley do well in dappled shade but sunlovers can be
quite happy with a few hours of full sun. I once had a lavender hedge in
an
E-W side passage that only saw the sun in the very early morning and late
afternoon in summer and none at all in winter. It was vigorous and
healthy.

How tall do lavender hedges get then?