Hello Laura,
We are specialized in the European Alps and we cover Slovenia, Austria, Italy, France and Switzerland. In March we can easily find snowy situation with a big range of chices towns, small villages, chalets, forests, rivers, frozen lakes, etc… We will be actually already shooting a winter catalogue in mid March and we will more then happy to host your shoot as well. Last year we serviced a cinese winter catalogue in late march.
What you will NOT FIND in Europe in Mid March is the red/orange leaves. This is from northern Europe down to Greace. The reg/orange leaves are present in autumn before they fall on the ground. In March all the north emisphere is aming to spring with green leaves trying to pop out as soon the temperature rise. In the Alps in March thanks to the altitude we can still find winter and we can still find spots where the leaves are still on the ground but they will be brown/yellow and the trees will be bare and have a winter look. Hope this helps a bit. Please feel free to contact me with more details to better understand the projec and bring it where ever is best. Paolo paolo@shootinthealps.com