Should you hyphenate leis in Lavender Leis and accessories?

It's a necklace made out of flowers commonly known in Hawaii.

life, energy, and intelligence : ] life, energy, and intelligence : ]

Leis are popular at Hawaiian Luaus.

A lei is generally made of flowers, which are usually fake. The kind you can buy for about fifty cents are cheap paper or occasionally fabric flowers.

A lei is made from Hawaiian flowers.