
<





>
JUGLANS nigra
Commonly known as Black walnut, Jupiter's nuts

A fast growing tree with furrowed bark and large round fruits in pairs
Full Plant Details - Sun/Soil & other attributes - Click to close
-
Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
-
Good to know
Roots produce juglone which can inhibit growth of plants within the crown area. -
Pests & Diseases
Aphids, walnut blister mites,honey fungus, leaf and coral spot. -
Place of origin
Eastern USA. -
Deciduousleaves to 60cm (24in) long consisting of 11-23 ovate-oblong, glossy, dark-green leaflets.
-
Fully hardy
-
Pinnate
-
Entire
-
Oblong
-
Ovate
-
Height
To 30m (100ft) -
Spread
To 20m (66ft) -
TreeVigorous, spreading tree. Male flowers are in drooping catkins to 10cm (4in) long. Edible nuts within spherical fruit to 5cm (2in) long.
-
Pruning group 1
Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
-
Hardy - very cold winter
Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F) -
Scented foliageAromatic leaves.
-
Autumn Seasonal Interest
-
Summer Seasonal Interest
-
Fertile moist well-drained soil
-
Full sun
Prefers a sheltered sunny spot. -
Rounded to broadly spreading
-
Mature Sizeto 30m (100ft)
to 20m (66ft)
View Planting Tips and Care Advice
Juglans - Growing Guide
Trees - Care Guide
- How to plant a tree - Video Tip ondemand_video
- How to plant a tree
- Ties - Video Tip ondemand_video
- Restaking fallen young trees - Video Tip ondemand_video
- Fallen old tree - Video Tip ondemand_video
- Clearing up fallen beech tree - Video Tip ondemand_video
- Spring pruning - Video Tip ondemand_video
- Removing side shoots - Video Tip ondemand_video
- Pruning and Shaping Magnolia - Video Tip ondemand_video
- Deer protection - Video Tip ondemand_video
- Weed Spraying - Video Tip ondemand_video
- Removing Ivy - Video Tip ondemand_video
- Removing wire protection - Video Tip ondemand_video
- Tidying young trees in October - Video Tip ondemand_video
- Tree Survey - Video Tip ondemand_video
- Crown uplift - Video Tip ondemand_video
- Removing shoots below graft - Video Tip ondemand_video
- Removing peeling bark - Video Tip ondemand_video
- Maintaining variegation - Video Tip ondemand_video
View Planting Combinations
