Commercial Floriculture

Classification

• The species of the genus Chrysanthemum are annual, perennial herbs, sometimes partly woody.
• The genus Chrysanthemum belongs to the family Compositae / Asteraceae.

Class 1. Single Ray florets in a single row at right angles to the stem. Disc is flat to slightly round and may be of contrasting colours, e.g., Potomac.

 

Class 2. Semi-double Ray florets in more than one row at right angles to the stem but may curve downward at the tips. Disc as in class 1.

 

Class 3. Anemone Ray florets variable, from flattened, broad and equal in length to reflexing, pointed at tip and unequal in length. Disc florets are numerous tube-like and elongated so as to form a prominent disc which may range from flat to hemispherical in form.

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Class 4. Pompon Bloom globular, somewhat flat in young stage or small button type. Ray florets broad, incurved, smooth and firm with good substance.

 

Class 5. Incurve Breadth and depth should be equal to produce a globular bloom. Ray florets narrow to broad, smooth and incurve in a regular to an irregular manner without producing an open centre, e.g., Snow Ball, Mountaineer, Nob Hill. An Irregular Incurve chrysanthemum, or 大菊 ogiku in Japanese, meaning "big chrysanthemum". The size of this flower is around 20cm (about 8 inches).

 

Class 6. Reflexing incurve Ray florets usually broad and smooth. Breadth and depth nearly equal to form a globular bloom, sometimes flattened, may be less compact than incurve. All mature florets not completely incurving and not all completely reflexed. The lower florets sometimes reflexing to give a skirted effect, e.g., Dream Castle, Indianapolis.

 
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Class 7. Decorative Ray florets from short and broad to narrow, long and pointed, they generally reflex, although upper florets may tend to incurve. Blooms more flattened than globular, e.g., Otome Pink, Princess Anne.

 

Class 8. Reflex Bloom globular with equal depth and breadth and a full centre, or somewhat flattened. Ray florets narrow to broad, gracefully overlapping in either a regular or in an irregular manner and reflexed. e.g., Coronation Pink.

 

Based on the size, shape of flower, arrangements of florets and purpose used, the chrysanthemums are classified into several groups.
i) Small flowered types.
ii) Large flowered types
iii) Classification based on plant growth
iv) Based on usage.

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