Japanese Privet (Japonicum)

The Japanese Privet (Japonicum) is generally described as a perennial tree or shrub. This is not native to the U.S. (United States) and has its most active growth period in the spring and summer . The Japanese Privet (Japonicum) has dark green foliage and inconspicuous white flowers, with an abuncance of conspicuous black fruits or seeds. The greatest bloom is usually observed in the summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are retained year to year. The Japanese Privet (Japonicum) has a moderate life span relative to most other plant species and a rapid growth rate. At maturity, the typical Japanese Privet (Japonicum) will reach up to 10 feet high, with a maximum height at 20 years of 10 feet.

The Japanese Privet (Japonicum) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, cuttings, seed. It has a rapid ability to spread through seed production and the seedlings have high vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -13°F. has medium tolerance to drought and restricted water conditions.

Plant Basics
Category
Growth Rate Rapid
General Type Tree, Shrub
Growth Period Spring, Summer
Growth Duration Perennial
Lifespan Moderate
Plant Nativity Introduced to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Multiple Stem
Drought Tolerance Medium
Shade Tolerance Tolerant
Height When Mature 10
Flower Color White
Flower Conspicuousness Yes
Fruit/Seed Abundance High
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Rapid
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Container, Cuttings, Seed
Moisture Requirements Low
Cold Stratification Required Yes
Minimum Temperature -13
Soil Depth for Roots 18
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability Yes
Responds to Coppicing Yes
Growth Requirements
pH Range 5.5–6.9 pH
Precipitation Range 30–30 inches/yr
Planting Density 200–400 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 18
Minimum Frost-Free Days 100 day(s)
Salinity Tolerance Low
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention Yes
Palatability Low
Fire Resistant Yes

Source: USDA, NRCS, PLANTS Database, plants.usda.gov.
National Plant Data Center, Baton Rouge, LA 70874-4490 USA