Intermediate Floral Design

You will be able to advance your knowledge and skills in floral
design with this intermediate course. You will have opportunities
to design larger arrangements using more complex techniques.
You will learn to use some of the most common design
techniques including: mille de fleur, Biedermeier, phoenix, and
waterfall designs.

https://www.bucks.edu/businesscareer/pro-dev/browsebyindustry/floral-cert/