Wild Almond tree

Scientific name: Sterculia foetida

GPS Location: 17° 42′ 56.62″ N, 64° 49′ 46.39″ W

Observations:

Phenological Markers – Wild Almond (Sterculia foetida)

1. Leaf Behavior
Sterculia foetida is deciduous, typically shedding its leaves during the dry season.

  • Leaves are palmately compound, usually with 5–9 oblong leaflets arranged like fingers on a hand.
  • Leaf drop occurs between January and March, often preceding flowering.
  • New leaf flushes emerge quickly with rainfall or seasonal shifts, typically in March–April.

Observation Tips:

  • Watch for complete canopy loss during dry months.
  • Record the first appearance of new leaflets, noting their bronze or reddish-green hue.

2. Flowering
Flowers are small, reddish to purplish, and borne in loose clusters at the branch tips.

  • They are unisexual, and both male and female flowers are found on the same tree.
  • The flowers may emit a strong, unpleasant odor, particularly in the early blooming stages.
  • Flowering begins just before or during leaf flush, usually March to May.

Observation Tips:

  • Track emergence of flower clusters on leafless or newly flushing branches.
  • Note any odor and its correlation with flower maturity.
  • Observe pollinator visits, especially flies and beetles.

3. Fruiting
The fruit is a large, woody, capsule, that splits open when mature.

  • Inside each capsule are several smooth, black seeds—these resemble almonds in shape but are inedible raw and potentially toxic.
  • Fruits mature from May to July, and the seeds are sometimes roasted in traditional settings after detoxification.

Observation Tips:

  • Document fruit development, including capsule size, color change, and opening.
  • Note seed exposure and animal interaction—some birds may investigate them, though few consume them.

4. Growth Habit
This species grows as a tall, fast-growing deciduous tree, reaching 60–100 feet in favorable conditions.

  • The trunk is often straight and branch-free for many feet, topped by a rounded to spreading canopy.
  • Commonly found in dry coastal forests or planted as an ornamental or shade tree in tropical regions.

5. Seasonal Pattern (St. Croix)

  • Jan–Mar: Complete or partial leaf drop
  • Mar–May: Flowering and new leaf emergence
  • May–Jul: Fruit maturation and seed exposure
  • Aug–Dec: Canopy fully leafed; rest phase or occasional light flowering
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