Krugiodendron ferreum

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Black Ironwood, Leadwood


Plant Specifics

Size:25-35 (30) ft.  Sometimes grows as a shrub.
Life Span:Long-lived perennial
Flower Color:Greenish-white
Fruit Color:Black
Phenology:Evergreen. Inconspicuous blooms in spring. Fruits ripen fall-winter.
Noted for:Interesting foliage, Hurricane wind resistance


Recommended Uses:Specimen plant or small shade tree.
Propagation:Seed. Do not store.
Availability:Friends, Native nurseries, FNPS plant sales
Light: Full Sun,  Part Shade
Moisture Tolerance:
always floodedextremely dry
 (Somewhat moist, no flooding ----- to ----- Very long very dry periods)
Moisture Tolerance: Somewhat moist, no flooding ----- to ----- Very long very dry periods
Salt Water Flooding Tolerance:Tolerant of occasional/brief inundation such as can occur in storm surges.
Salt Spray/ Salty Soil Tolerance:Moderate. Tolerant of salty wind and may get some salt spray. Exposure to salt spray would be uncommon (major storms).
Soil or other substrate:Humus (organic, upland), Lime rock, Sand
Soil pH:Calcareous (high pH)



Fruit eaten by birds and other wildlife.

Native Habitats:Dry sites. Hammocks.

Distribution and Planting Zones

Natural Range in Florida
USDA Zones

Suitable to grow in:
10A 10B 11 

USDA zones are based on minimum winter temperatures


Ethnobotany:Fruit is said to be edible.
General Comments:Known for very dense wood, hence the common name.  Said to have the heaviest wood on any American tree.