Sonchus oleraceus
Annual Sow Thistle (Sonchus oleraceus) is an erect, branched herbaceous plant. It is a annual which grows in clumps up to 1m tall. It has a few to many bristly, spiny-toothed leaves, with wavy margins, and a small yellow flower head. It is native to Eurasia and has been naturalized in North America. It is a highly invasive species, outcompeting native plants. It is commonly used as a medicinal plant and the leaves can be eaten raw or cooked.
Sunlight
Partial Shade
Water Needs
high
Green areas show climates worldwide where this plant can grow.
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Water Every
"7-10" days
Sun Needs
partial-shade
Growth
High
Care Level
Low
💧 Water every "7-10" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Start seeds indoors 6-8 weeks before last frost date
Divide root ball in spring, replant sections immediately
Take 4-6" cuttings in spring, root in water or moist soil
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Take 4-6" cuttings in spring, root in water or moist soil
Good For:
Consider Carefully:
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Requires frequent watering to maintain moist soil. Don't let the soil dry out completely.
Plant in early spring or fall for best results. Blooms in spring.