A florist.
A Florist is a seller of plants and flowers.
Gardner
They are a floristA Florist is a person who sells flowers.
Shepman/Shepwoman
Yes you should. The person cared enough to get you flowers, so call to let them know you care and liked the appreciation and flowers!
there called a horticulturalist ...
A horticulturalist
There are many companies and websites that offer valley flowers for sale. The best companies that offer valley flowers for sale are Valley Flowers and SF Valley Flowers.
A florist, floral artist, flower arranger...
A person who designs flower arrangements is called a floral designer.
Flowrist