ABSTRACT

I. Introduction ............................................................................................................................. 79 II. Crocuses .................................................................................................................................. 79

A. Introductory Remarks ....................................................................................................... 79 B. Botanical Classi‹cation and Distribution ......................................................................... 79 C. Morphology and Annual Growth Cycle ...........................................................................80 D. Major Species and Cultivars ............................................................................................. 81 E. Propagation ....................................................................................................................... 81 F. Production of Spring-Flowering Crocuses ....................................................................... 82

1. Agronomy.................................................................................................................... 82 2. Corm Production ......................................................................................................... 82 3. Flower Production ....................................................................................................... 82

G. Physiological Disorders, Pests, and Diseases ................................................................... 82 III. Dutch Irises ............................................................................................................................. 83

A. Introductory Remarks ....................................................................................................... 83 B. Botanical Classi‹cation and Distribution ......................................................................... 83 C. Morphology and Annual Growth Cycle ........................................................................... 83 D. Major Species and Cultivars .............................................................................................84 E. Propagation .......................................................................................................................84 F. Production .........................................................................................................................84