Japanese Honeysuckle (Japonica)

The Japanese Honeysuckle (Japonica) is generally described as a perennial vine. This is not native to the U.S. (United States) and has its most active growth period in the spring and summer . The Japanese Honeysuckle (Japonica) has green foliage and inconspicuous white flowers, with a smattering of conspicuous black fruits or seeds. The greatest bloom is usually observed in the late spring, with fruit and seed production starting in the spring and continuing until summer. Leaves are not retained year to year. The Japanese Honeysuckle (Japonica) has a short life span relative to most other plant species and a rapid growth rate. At maturity, the typical Japanese Honeysuckle (Japonica) will reach up to 1 foot high, with a maximum height at 20 years of 1 foot.

The Japanese Honeysuckle (Japonica) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, cuttings, seed, sprigs. It has a slow ability to spread through seed production and the seedlings have medium 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 Vine
Growth Period Spring, Summer
Growth Duration Perennial
Lifespan Short
Plant Nativity Introduced to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Late Spring
Displays Fall Colors No
Shape/Growth Form Stoloniferous
Drought Tolerance Medium
Shade Tolerance Tolerant
Height When Mature 1
Vegetative Spread Rapid
Flower Color White
Flower Conspicuousness Yes
Fruit/Seed Abundance Low
Fruit/Seed Seasonality Spring Summer
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Container, Cuttings, Seed, Sprigs
Moisture Requirements Medium
Cold Stratification Required Yes
Minimum Temperature -13
Soil Depth for Roots 10
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability Yes
Responds to Coppicing No
Growth Requirements
pH Range 4.9–7.8 pH
Precipitation Range 24–24 inches/yr
Planting Density 4800–11000 indiv./acre
Soil Textures Fine, Medium
Soil Depth for Roots 10
Minimum Frost-Free Days 130 day(s)
Salinity Tolerance Low
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability Medium
Fire Resistant Yes
Causes Livestock Bloating None

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