Estimating the age of a plumeria tree can be done by examining its branching structure. Here are the steps to follow:

1. Branching Structure:
   • Follow the longest branch and count the number of inflorescence scars or branch points. Each branching point typically indicates a growth cycle where the plant produces flowers.
   • In some areas, plumerias may bloom twice a season, while in others, they may skip a season. This variability should be considered.
2. Growth Rate:
   • Plumerias typically grow 1-2 feet per year. Measuring the height and considering the growth rate can provide an estimate.
3. Trunk Diameter:
   • Older plants generally have thicker trunks. Comparing trunk diameter with the known ages of other plants can give clues.
4. Blooming History:
   • Young plumerias (1-3 years old) may not bloom as prolifically as mature plants (4+ years).

Keep in mind these methods provide an estimate rather than an exact age. For more detailed guidance, visit Plumeria Care Guide.