Butternut
Juglans cinerea
Juglandaceae · broadleaf · introduced
Quick Facts
Height
100 ft
Spread
65 ft
Growth Rate
Fast
Light
Full Sun
Soil
Well Drained
Water
Moderate
Hardiness
Zone Zones 3a–8b
Bloom Time
May to June
Origin
eastern North America, from New Brunswick to Georgia and
Phenological Calendar
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Feb 15-Mar 15 |
| Leaf emergence BBCH 11 | Mar 1-Apr 1 |
| Bloom start BBCH 61 | May 1-May 31 |
| Bloom end / petal fall BBCH 69 | May 15-Jun 15 |
| Fruit/seed development BBCH 71 | Sep 1-Nov 30 |
| Fruit/seed maturity BBCH 85 | Dec 1-Feb 28 |
| Fall color / leaf senescence BBCH 93 | Oct 1-Nov 15 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |
Diseases (10)
Geosmithia morbida (vectored by Pityophthorus juglandis) Thousand Cankers Disease
Walnut Blight
Blackline
Ophiognomonia leptostyla (syn. Gnomonia leptostyla) Anthracnose Blotch
Various species including Colletotrichum acutatum, C Anthracnose
Black Walnut Toxicity
Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall
Downy Leaf Spot
Mosses and Lichens
Phytophthora spp. (P Phytophthora Root Rot