London Rocket
Sisymbrium irio
- Native to:
- Afghanistan, Algeria, Baleares, Bulgaria, Canary Is., China, Corse, Cyprus, Czechia-Slovakia, East Aegean Is., Egypt, Eritrea, France, Greece, Gulf States, Hungary, Iran, Iraq, Italy, Kirgizstan, Kriti, Kuwait, Lebanon-Syria, Libya, Madeira, Mauritania, Morocco, Nepal, Niger, NW. Balkan Pen., Oman, Pakistan, Palestine, Portugal, Romania, Sardegna, Saudi Arabia, Sicilia, Sinai, Somalia, Spain, Sudan-South Sudan, Switzerland, Tadzhikistan, Transcaucasus, Tunisia, Türkiye, Türkiye-in-Europe, Turkmenistan, Uzbekistan, Yemen
Juan Carlos Fonseca Mata
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Brassicaceae
- Genus:
- Sisymbrium
- Species:
- Sisymbrium irio
- USDA Symbol:
- SIIR
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Forb/herb
- Height:
- 60 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- feb,mar,apr,may,jun
- Bloom Colors:
- yellow
Host Plant for Caterpillars
Checkered White (Pontia protodice)
Reported Fauna Sightings
Bees: Brown-belted bumble bee (Bombus griseocollis), ⚠️Western honey bee (Apis mellifera)
Garden & Ecology Notes
- Wildlife Value:
- birds
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- well-drained, sandy or loamy soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- commonly found in disturbed areas and roadsides
Propagation & Germination
- Stratification:
- None required
- Germination Time:
- 7–21 days
- Notes:
- Seeds germinate readily without pretreatment; light may enhance germination.
The above propagation data sourced from Claude AI