Freesia · Narsingdi, Dhaka Division, Bangladesh
When to sow freesias in Narsingdi
Main outdoor window
not outdoors here
The window this page is built around.
Timed from last spring frost
no spring frost
In Narsingdi, on your chosen risk.
First autumn frost
no autumn frost
The far end of the outdoor season.
The average last frost. Half of all years are later than this.
Step by step in Narsingdi
Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.
Freesias through the year
Against the frost risk in Narsingdi
Why these dates
In frost-free gardens plant corms in autumn for late-winter flowers. Where there is frost, plant after the last one for early-summer flowers, or grow them in pots started in autumn and kept somewhere cool and bright. Freesias need cool nights below about 13C to initiate flowers at all, which is why a warm greenhouse produces leaves and nothing else.
Killed at about -3C. The limiting factor is heat rather than cold: the corms need a warm dry dormancy but the growing plant wants cool conditions, so hot-summer climates flower them in winter and spring only.
Freesias are planted once and then left in place, so there is no sowing offset to resolve. Nor is there a dormant season to plant into: this crop keeps its leaves and keeps growing through the winter, which is exactly why cold damages it. The window on this page therefore waits until the last frost in Narsingdi has passed and the soil has begun to warm, giving the roots the longest possible run before the cold returns.
Narsingdi sits in zone 11b, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.
Also in Narsingdi
Other flowers to time
Growing freesias in Narsingdi
How much frost will freesias tolerate?
Killed at about -3C. The limiting factor is heat rather than cold: the corms need a warm dry dormancy but the growing plant wants cool conditions, so hot-summer climates flower them in winter and spring only.