Check whether the flower wilts, bends, or drops petals soon after exposure to ripe fruit, exhaust fumes, or smoke
Look for rapid petal shattering or flower drop after cutting or handling
Observe if the blooms age faster in warm conditions or enclosed spaces
Compare vase life with and without exposure to ethylene sources
Review the species or cultivar’s known postharvest ethylene sensitivity
Test a small sample by placing it near a known ethylene source and watching for accelerated senescence
Note if buds fail to open or open unevenly after exposure
Check for discoloration, browning, or translucent petals after exposure
Observe whether stamens, pistils, or petals detach easily as the flower matures
Determine if the flower responds to ethylene inhibitors by lasting longer than untreated blooms