German Knotgrass

Scleranthus annuus

Native to:
Albania, Algeria, Austria, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Canary Is., Corse, Cyprus, Czechia-Slovakia, Denmark, Eritrea, Ethiopia, Finland, France, Germany, Greece, Hungary, Iran, Ireland, Italy, Kriti, Krym, Lebanon-Syria, Madeira, Morocco, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Poland, Portugal, Romania, Russia, Sardegna, Saudi Arabia, Sicilia, Spain, Sweden, Switzerland, Tadzhikistan, Transcaucasus, Tunisia, Türkiye, Türkiye-in-Europe, Ukraine, Uzbekistan

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Caryophyllaceae
Genus:
Scleranthus
Species:
Scleranthus annuus
USDA Symbol:
SCAN2

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
20 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun,jul,aug,sep,oct
Bloom Colors:
green

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)

Soil Requirements

Soil Type:
sandy, nutrient-poor, well-drained soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
thrives in open, disturbed habitats

Propagation & Germination

Stratification:
None required
Germination Time:
7–21 days
Notes:
Seeds germinate readily in spring or autumn without pretreatment. Light may improve germination rates.

The above propagation data sourced from Claude AI