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The Old-man-in-the-Spring (Vulgaris) is generally described as a biennial 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 greatest bloom is usually observed in the early spring, with fruit and seed production starting in the spring and continuing until summer. Leaves are not retained year to year. The Old-man-in-the-Spring (Vulgaris) has a short life span relative to most other plant species and a rapid growth rate. At maturity, the typical Old-man-in-the-Spring (Vulgaris) will reach up to 1.5 foot high, with a maximum height at 20 years of 0 inches.
The Old-man-in-the-Spring (Vulgaris) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by 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 47°F. has medium tolerance to drought and restricted water conditions.
| Category | |
|---|---|
| Growth Rate | Rapid |
| General Type | Forb/herb |
| Growth Period | Spring, Summer |
| Growth Duration | Annual, Biennial |
| Lifespan | Short |
| Plant Nativity | Introduced to U.S. |
| Commercial Availability | No Known Source |
| Bloom Period | Early Spring |
|---|---|
| Displays Fall Colors | No |
| Shape/Growth Form | Single Crown |
| Drought Tolerance | Medium |
| Shade Tolerance | Intolerant |
| Height When Mature | 1.5 |
| Vegetative Spread | None |
| Flower Color | Yellow |
| Flower Conspicuousness | No |
| Fruit/Seed Abundance | High |
| Fruit/Seed Seasonality | Spring Summer |
| Seed Spread Rate | Rapid |
| Propagations (Ways to Grow) | Seed |
|---|---|
| Moisture Requirements | Medium |
| Cold Stratification Required | No |
| Minimum Temperature | 47 |
| Soil Depth for Roots | 8 |
| Toxic to Nearby Plants | No |
| Toxic to Livestock | No |
| After-Harvest Regrowth Rate | Slow |
| After-Harvest Resprout Ability | No |
| Responds to Coppicing | No |
| pH Range | 5–8.5 pH |
|---|---|
| Precipitation Range | 16–16 inches/yr |
| Planting Density | 0–0 indiv./acre |
| Soil Textures | Coarse, Fine, Medium |
| Soil Depth for Roots | 8 |
| Minimum Frost-Free Days | 120 day(s) |
| Salinity Tolerance | None |
| CaCO3 Tolerance | Medium |
| Leaf Retention | No |
|---|---|
| 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
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