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How to Grow Shungikus UK | Regional Planting Calendar
Move through the SoilCommander growing library like a course: keep the navigation in place, open the next lesson, and build your garden plan step by step.
In the UK, shungikus go in the ground early March to early April.
Shungikus (Glebionis coronaria) — annual.
Timing is the decision that matters most in the UK: there are 4 separate regional sowing windows, ranging from early March in Southern England to early March in Scotland.
Core growing advice on this page is checked against named horticultural and university-extension sources — see References.
RHS/True Leaf Market recommend sowing in early spring (and again in autumn for a longer season); a single early-spring window is applied uniformly across all four sub-regions since neither source gives a UK-region-specific gradient.
Midlands - detail & sources
RHS/True Leaf Market recommend sowing in early spring (and again in autumn for a longer season); a single early-spring window is applied uniformly across all four sub-regions since neither source gives a UK-region-specific gradient.
Northern England - detail & sources
RHS/True Leaf Market recommend sowing in early spring (and again in autumn for a longer season); a single early-spring window is applied uniformly across all four sub-regions since neither source gives a UK-region-specific gradient.
Scotland - detail & sources
RHS/True Leaf Market recommend sowing in early spring (and again in autumn for a longer season); a single early-spring window is applied uniformly across all four sub-regions since neither source gives a UK-region-specific gradient.
When to pick: Harvest young leaves, stems and flowers as a cut-and-come-again leafy vegetable before the plant bolts to flower in warm weather; sow in early spring and again in autumn for a longer cropping window (RHS; True Leaf Market).
Shungiku's leaves, stems and young flowers are harvested and eaten as a leafy vegetable in Japanese and Chinese cuisine, often called chop suey greens.
An erect annual/biennial with pinnately divided leaves and yellow daisy-like flower-heads in spring and summer, known by the culinary name shungiku or chrysanthemum greens. Not native to GB/Ireland. Hardiness H7 (hardy in severe European continental climates, below -20C). Full sun. Soil: chalk, clay, loam or sand, with a preference for well-drained sandy soil; moist but well-drained; acid, alkaline or neutral pH. Height 0.5-1m, spread 0.1-0.5m. Time to maturity 1-2 years. Propagated by seed sown in spring. Generally pest-free and generally disease-free. Leaves, stems and young flowers are eaten as a leafy vegetable (chop suey greens), especially in Japanese and Chinese cuisine.
1 independent sources are cited for this crop. Where they disagree - soil pH is the clearest case - every figure is preserved rather than averaged into false precision.
Frequently Asked Questions
When should I sow shungikus in the UK?
In Southern England, from early March. In Scotland, wait until early March. Treat these as a guide rather than a fixed date — the governing rule is to sow only once frost risk has passed and temperatures are reliably warm enough.
When do I sow shungikus?
Sow early March to early April.
What soil pH do shungikus need?
A pH of about 6–7.5. That span reflects genuine variation between the authorities we cite rather than a single agreed figure — the References section lists each source's exact range.
Plan next season before the problems start
Most of the advice on this page comes down to timing and spacing — sowing at the right moment, rotating beds, and giving plants enough airflow. The UK Garden Planner lays your plot out month by month so those decisions are already made before the season starts.
UK vegetable growing guides · Checked against RHS & Met Office guidance
Every SoilCommander guide is written and maintained by our editorial team for real UK growing conditions, and reviewed against Royal Horticultural Society growing advice and Met Office climate data before publication.
Sketch your exact plot shape, pick your UK crops, and get a spacing-accurate bed layout with companion pairings, a rotation plan and month-by-month sowing dates — every fact sourced from RHS and Garden Organic.
