American Camellia Society

Cactus & Succulents

The Cactus & Succulent Society

Chrysanthemuns

National Chrysanthemun Society

Clematis

American Clematis Society

Daylilies

American Hemerocallis Society

Ferns

American Fern Society

Irises

American Iris Society

Dwarf Iris Society of America 

Irises

American Iris Society

Dwarf Iris Society of America 

Orchids

American Orchid Society

Perennials

Perennial Plant Association

Primroses

American Primrose Society

Roses

All-America Rose Selection

 American Rose Society 

Magazines & Other Organizations

National Gardening Association

Pacific Coast Nurseryman Magazine