Iris petrana 
Iris planifolia 
Iris purdyi 
Iris setosa 
Iris sintenisii 
Iris suaveolens 
Iris versicolor 
Iris vicaria 
Iris westii 
Iris × germanica 
Isochilus aurantiacus 
Italian garlic 
Italian Gladiolus 
Italian orchid 
Japanese Iris 
Japanese iris 
Jenkinss Dendrobium 
Jericho Allium 
Jewel Orchid 
Johnsons Grass Tree 
Jonquil or Rush daffodil 
Joshua tree 
Judean Iris 
Kahakaha