Dames Rocket (Matronalis)

The Dames Rocket (Matronalis) is generally described as a perennial forb/herb. This is not native to the U.S. (United States) and has its most active growth period in the spring and summer . The Dames Rocket (Matronalis) has green foliage and inconspicuous purple flowers, with a moderate amount of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the spring, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Dames Rocket (Matronalis) has a short life span relative to most other plant species and a rapid growth rate. At maturity, the typical Dames Rocket (Matronalis) will reach up to 4.5 feet high, with a maximum height at 20 years of 0 inches.

The Dames Rocket (Matronalis) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by container, seed. It has a moderate 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 Rapid
General Type Forb/herb
Growth Period Spring, Summer
Growth Duration Biennial, Perennial
Lifespan Short
Plant Nativity Introduced to U.S.
Commercial Availability No Known Source
Physical Characteristics
Bloom Period Spring
Displays Fall Colors No
Shape/Growth Form Bunch
Drought Tolerance Medium
Shade Tolerance Intermediate
Height When Mature 4.5
Vegetative Spread None
Flower Color Purple
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Moderate
Gardening Characteristics
Propagations (Ways to Grow) Container, Seed
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature -23
Soil Depth for Roots 12
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 5–7 pH
Precipitation Range 32–32 inches/yr
Planting Density 4800–18000 indiv./acre
Soil Textures Medium
Soil Depth for Roots 12
Minimum Frost-Free Days 120 day(s)
Salinity Tolerance None
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability Low
Fire Resistant No
Causes Livestock Bloating None

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