Variety traits

Iris bulb

Iris L.

The iris bulb is a specialized organ for reproduction and nutrient storage, characteristic of the Iridodictyum, Xiphium, and Juno groups, which dictates their agrotechnical distinctions from rhizomatous species.

In the reference 11 varieties crop Iris, where this is mentioned in the description.

Bulb quality is evaluated by size in centimeters, which correlates with generative capacity: for instance, effective forcing of Xiphium requires bulbs with a diameter of 6–8 cm. Important indicators include the integrity of the protective tunic scales and the absence of a "flat" shape, which is characteristic of post-flowering bulbs prone to desiccation.

The agrotechnics of bulbous irises require a dormancy period in dry conditions after flowering, which often implies annual lifting. Bulbs are sensitive to planting depth; for proper development, it is necessary to maintain a depth of at least 2 cm from the surface, considering the roots' ability to pull the bulb deeper into the soil horizon.

General information about the subject — on the page Bulb.

Sources8

Varieties of Iris mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.