Keeping cut flowers alive in Arizona is a different problem from keeping them alive anywhere else. Dry air and heat work against you from opposite directions, and the standard advice only gets you part of the way.
The basics, which still apply
- Unwrap the bouquet as soon as it arrives
- Fill a clean vase two-thirds full with cool water
- Cut 2 to 3 cm off each stem at a sharp angle
- Strip leaves that would sit below the waterline
- Change the water every two days and re-cut the stems each time
What is different here
- Check the water level daily, not every other day. In dry air a vase drops faster than you expect, and stems that run dry for a few hours rarely recover fully
- Keep flowers away from the air-conditioning vent. It is the single worst spot in an Arizona house — constant dry airflow strips moisture from petals
- Never leave a bouquet in a parked car, even for twenty minutes. In summer that is enough to finish it
- An interior room away from windows beats a bright windowsill here, even though the windowsill looks better
Which flowers cope best
Carnations and gerbera daisies are the most robust in this climate and the safest choice for anywhere that is not fully air-conditioned. Roses do well indoors — the 70 cm Ecuadorian stems we use hold 7 to 12 days — but they should not be left outdoors at any point between May and September.
If a rose head droops
A drooping head on an otherwise healthy rose is usually an air lock in the stem rather than the flower dying. Re-cut that stem under running water and put it straight back in the vase. It often lifts again within a few hours.