Bangkok's main flower market operates around the clock, peaking at 2–4 AM when the trucks arrive from farms upcountry.
A sprawling wholesale and retail flower market at the edge of the Old City — jasmine garlands, lotus flowers, marigolds, orchids, roses stacked ceiling-high.
The atmosphere peaks between midnight and 4 AM when fresh stock arrives and vendors compete for space; morning is the next-best option for flowers but without the drama.
Fresh jasmine garlands (phuang malai) for 10–30 THB each; lotus buds; orchid bunches; decorative arrangements; marigold offerings.
Near the Old City by the river — taxi or Grab; close to Pak Khlong Talad pier; easy to find.