Caucasian Pincushion Flower (Caucasica)

The Caucasian Pincushion Flower (Caucasica) has gray-green foliage and inconspicuous blue flowers, with a moderate amount of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the early spring, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Caucasian Pincushion Flower (Caucasica) has a moderate life span relative to most other plant species and a slow growth rate. At maturity, the typical Caucasian Pincushion Flower (Caucasica) will reach up to 2.5 feet high, with a maximum height at 20 years of 2 feet.

The Caucasian Pincushion Flower (Caucasica) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, seed. 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 -23°F. has medium tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Slow
Growth Period Spring, Summer, Fall
Lifespan Moderate
Plant Nativity Cultivated, or not in the U.S.
Commercial Availability No Known Source
Physical Characteristics
Bloom Period Early Spring
Displays Fall Colors Yes
Shape/Growth Form Multiple Stem
Drought Tolerance Medium
Shade Tolerance Tolerant
Height When Mature 2.5
Vegetative Spread None
Flower Color Blue
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Seed
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature -23
Soil Depth for Roots 8
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability Yes
Responds to Coppicing No
Growth Requirements
pH Range 6–7.5 pH
Precipitation Range 30–30 inches/yr
Planting Density 2700–4800 indiv./acre
Soil Textures Fine, Medium
Soil Depth for Roots 8
Minimum Frost-Free Days 130 day(s)
Salinity Tolerance Medium
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability Low
Fire Resistant No
Causes Livestock Bloating None

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