Poinsettia response time is the number of weeks required for a cultivar to transition to flowering from the start of the short-day period, measured by the appearance of pollen in the cyathia.
In the reference
55
varieties
crop Poinsettia,
where this is mentioned in the description.
For poinsettia, this indicator is a key parameter for production planning. Cultivars are classified into groups ranging from 8 to 11 weeks, where early-maturing cultivars have a value of 7.5–8.5 weeks, and mid-to-late-maturing ones range from 9–11 weeks. Knowing the response time allows the agronomist to calculate the shading start date to synchronize product readiness with market demand.
The actual time to reach flowering depends on external conditions, such as night temperature and light intensity. High temperatures can cause a delay in flowering, and light deficiency slows down development even in fast-responding cultivars; therefore, selecting a cultivar based on this trait is critical for managing the growing schedule.
General information about the subject — on the page
Maturity group.
Varieties of Poinsettia 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.