is usually iambic. The number of stresses per line is 1, 2, 3, 4, 1, while the syllabic pattern is 2, 4, 6, 8, 2. However, she's not rigidly tied to these rules, as both poems demonstrate, particularly Blue Hyacinths. The beautifully casual first line ("In your") can be stressed in various ways according to pronunciation, or better still not stressed at all. The second line has five syllables, not four, and the fourth has all of nine.
from Carol Rumens: The Guardian: Poem of the week: two cinquains by Adelaide Crapsey