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Juglans microcarpa, photographed by an iNaturalist contributor
(c) Ron Stephens, some rights reserved (CC BY-NC), uploaded by Ron Stephens · CC BY-NC
#1853 most planted

Juglans microcarpa

Little walnut · also Texas walnut, Texas black walnut, Little black walnut

BroadleafDeciduous
16
trees mapped
0.00%
of all named trees
2
cities
2.1 in
median trunk (5 cm, 15 measured)
6.4 yr
median age (94% have a planting date)

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This deciduous small tree or large shrub typically has a rounded crown and deeply-furrowed trunk. It produces small, edible nuts and prefers full sun. Its roots release toxic substances that can affect nearby plants.

Where it grows

Trees in each city's inventory, with the share of that city's named trees this species accounts for.

  1. Boston · United States
    156.4 yr2.1 in
  2. Paris · France
    1——

Traits

Form
Broadleaf
Foliage
Deciduous
Mature height
30–50 ft
Canopy spread
30–50 ft
Sun
Full sun
Water needs
Moderate
Drought tolerance
Moderate
Roots
Invasive
Wildlife value
High
Fire risk
Low
Blooms
Mar, Apr, May

Trunk diameters across every city: median 2.1 in, mean 11 in, 90th percentile 24 in. Measured at breast height, as published by each inventory.

Native range

Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.

Temperate Broadleaf & Mixed Forests

  • East Central Texas forests

Temperate Conifer Forests

  • South Central Rockies forests

Temperate Grasslands, Savannas & Shrublands

  • Texas blackland prairies

Other Juglans in the catalogue

12 of the top 2,000 species are in this genus.

Interested in talking trees? arborary.world@gmail.comTree data © the respective municipal publishers and © OpenStreetMap contributors (ODbL).