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How to Keep Flowers Fresh in Florida Heat

Cut flowers and 90-degree humidity don't have to be enemies. Seven florist rules for making arrangements last in South Florida.

Published 2026-07-20

How to Keep Flowers Fresh in Florida Heat

Every florist in South Florida gets the same question: "How long will these actually last down here?" The honest answer — a week or more, if you follow the rules the heat imposes.

The seven rules

  1. Get them into water within the hour. In a 90-degree car, stems start sealing in minutes. If you're running errands, make the florist the last stop.
  2. Keep them away from the AC vent — and the window. Cold blast dries petals from one side; Florida sun through glass cooks them from the other. The best spot is a bright room out of direct light and airflow.
  3. Recut the stems every two to three days. A half-inch off at an angle, under running water if you can. This is the single highest-impact habit.
  4. Change the water completely — don't top it off. Bacteria is what actually kills most arrangements. Fresh water every two days beats flower food in old water every time.
  5. Use the packet, once. Flower food helps in the first fill. After that, clean water and clean stems matter more.
  6. Pull fading stems immediately. One decaying rose accelerates every stem around it.
  7. Know your flower. Tropicals — bird of paradise, anthurium, ginger — are built for our climate and routinely go two weeks. Delicate garden roses and hydrangea want the coolest room in the house.

What we do on our end

Every South Florals arrangement is designed the morning it's delivered, transported climate-controlled, and built from stems conditioned overnight — the head start that makes the rules above actually pay off. That's the practical difference between a local hand delivery and a box shipped through three warehouses.

Want the longest-lasting option for a hot week? Go tropical — it's what South Florida grows best.