Flower is a simple calendar. It is meant to be different from the usual interfaces found in the 'enterprise' or 'corporate' calendars.
Generally calendar/scheduling software forces you to navigate to a specific date/time and record your event in very specific terms.
While this is useful for some purposes, people do not generally think of their schedules in such definite terms, nor does real life co-operate with such strict time tables.
In Flower, the idea is to specify events in a very vague, unstructured form, combined with twitter style tags to achieve more deterministic results.
Flower is currently in a very early stage in design.
Watch this space for more progress!