A florist, floral artist, flower arranger...
.
you call them an arranger
You call a person who sells flowers a (Florist)
A florist.
A Florist is a seller of plants and flowers.
Gardner
They are a floristA Florist is a person who sells flowers.
A Florist.
Roses Only of Australia will arrange international flowers delivery for people with money for delivery and handling fees. People can gave them a call and they will arrange the flower and send it to the people.
there called a horticulturalist ...
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!
A horticulturalist
A person who designs flower arrangements is called a floral designer.