Botanical Name: Juglans regia
Common Name: English walnut
Type of Plant: dicot: tree
Character deciduous
 
Habit of Growth:
Overall Shape an erect, single-trunked, heavy-branched tree, with spreading branches forming a large rounded canopy; trunk and branches are grayish-white, smooth
Height 40-70'
Spread equal or more
Growth Rate rapid
 
Environment:
Exposure outdoors full sun preferred; can tolerate some shade
Soil thrives in well-draining soil
Hardiness hardy (zones 4-9; 14-23); grows well in warm, humid areas
 
Morphology:
Leaves odd-pinnately compound, alternate, 8-16" (20") long, with mostly 7-9 leaflets; oblong-ovate, 2-6" long, aromatic when crushed
Flowers unisexual: male flowers in drooping catkins; pistillate flowers borne on short, terminal spikes; flowers appear afterleaves; April-May
Fruit large drupaceous nut: 1-1/2" diam, round
 
Propagation:
seed
 
Usage:
mostly used as an orchard tree; not a good landscape tree except for large areas; then as shade; very messy, brittle wood and disease; pest problems; also very aggressive root system
 
Landscape Care:
Watering regular preferred; apply deep soakings; keep irrigation water away from base of trunk to prevent fungus attack and rot
Fertilizing balanced fertilizing in spring and mid-summer
Pruning head high when young; thin yearly and remove deadwood
Pests/Diseases aphids, sooty mold (bad); stem rot fungus, scale, spider mite
Special Conditions/Other
 
Origin: Southeastern Europe
Family: Juglandaceae

Notes:
 
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