Texas Walnut
Juglans microcarpa
Juglandaceae · broadleaf deciduous tree · introduced
Last updated
Plant Profile
Size & Form
Height
20–50 ft
Spread
32 ft
Site Requirements
Light
Full Sun
Soil Drainage
Moist
Soil pH
4.5-8.5
Water
Moderate
Drought Tolerance
Moderate to high
Hardiness
Zones 7a–8b
Ornamental Interest
Bloom Time
may to june
Fall Color
Yellow
Origin
from from southwestern Kansas through Oklahoma to central
Watch for this season
Fall webwormHigh
Larval Feeding & Web Building
Phytophthora Root RotModerate
Growing Season Stress Expression
Crown GallMonitor
Dormant in Soil
Diseases: Regionally Documented (10)
Geosmithia morbida (vectored by Pityophthorus juglandis) Thousand Cankers Disease Xanthomonas arboricola pv. juglandis Walnut Blight Blackline virus Blackline Ophiognomonia leptostyla (syn. Gnomonia leptostyla) Anthracnose Blotch Black Walnut Toxicity Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall Pseudomicrostroma juglandis (syn. Microstroma juglandis) Downy Leaf Spot Mosses and Lichens Phytophthora spp. (P Phytophthora Root Rot Pratylenchus penetrans (primary) and P Nematode, Root-lesion
Pests: Regionally Documented (6)
Data Maturity Structured Multiple sources. Expert review underway.