English Walnut
Juglans regia
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Juglandaceae
- Genus:
- Juglans
- Species:
- Juglans regia
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Tree
- Height:
- 12-20 ft
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- apr, may
- Bloom Colors:
- green, yellow, yellow-green
Native Range
United States: California, Idaho, Michigan, New York, Washington, Canada: Ontario
Keystone Species Ranking
- Caterpillar Keystone:
- ★☆☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Host Plant for Caterpillars
Acrobasis stigmella, almond moth (Cadra cautella), American plum borer (Euzophera semifuneralis), Cecropia moth (Hyalophora cecropia), Copper Underwing (Amphipyra pyramidoides), elm spanworm moth (Ennomos subsignaria), Fall webworm (Hyphantria cunea), Forest Tent Caterpillar (Malacosoma disstria), fruit-tree leafroller (Archips argyrospila), Greater Red Dart (Abagrotis alternata), Gretchena concitatricana, Hickory Tussock Moth (Lophocampa caryae), Imperial Moth (Eacles imperialis), Indian meal moth (Plodia interpunctella), Luna moth (Actias luna), navel orangeworm (Amyelois transitella), Newlywed Underwing (Catocala neogama), orange tortrix moth (Argyrotaenia citrana), Penitent Underwing (Catocala piatrix), Prochoerodes forficaria, Red-humped caterpillar moth (Schizura concinna), Regal Moth (Citheronia regalis), Splendid Royal Moth (Citheronia splendens), Stigmella juglandifoliella, Tearful Underwing (Catocala lacrymosa), Variable Oakleaf Caterpillar Moth (Lochmaeus manteo), walnut spanworm moth (Phigalia plumogeraria), Walnut Sphinx (Amorpha juglandis), Western tussock moth (Orgyia vetusta), White-marked Tussock Moth (Orgyia leucostigma), Yellownecked caterpillar (Datana integerrima)
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- prefers deep soils with good fertility