Cutting the Blossoms
Glads are primarily grown for use as a cut flower. It is common knowledge that a gladiolus is much more beautiful if it has a long stem. But it is necessary to leave at least 4 leaves to help the plant in developing big strong corms for the next season's growth. Russian selectionist A. Gromov has suggested his own way of cutting blooms in his book 'Gladioluses':
To cut the spike use a narrow sharp knife, rather than shears, to avoid bruising. Take the spike in your left hand and make a slanting cut in the spike's way out from leaves. Then hold the spike with your right hand, carefully rotate it clockwise with your left hand and slowly pull it up. Be sure at least four leaves are left on the plant after cutting spikes to allow corm development.