🌍 Built for UK, USA, Canada & Worldwide Gardens Free Growing Guides for Every Region Love It or Your Money Back Secure Checkout Instant PDF Download Checked Against RHS, USDA & Agri-Food Canada Data Free Garden Layout Planner
🌍 Built for UK, USA, Canada & Worldwide Gardens Free Growing Guides for Every Region Love It or Your Money Back Secure Checkout Instant PDF Download Checked Against RHS, USDA & Agri-Food Canada Data Free Garden Layout Planner
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.
Sow direct outdoors from early spring through autumn, thinly in drills about 0.5cm deep, rows 15cm apart; germinates in 7-10 days at 10-20C (PlotMyGarden).
Rosette establishment
1
Rosette of deeply-lobed, dark green leaves develops in full sun to partial shade; partial shade preferred in summer to avoid bolting (RHS, PlotMyGarden).
Cut-and-come-again harvest
3
Leaves are cropped nearly year-round with staggered sowings; avoid overhead watering to reduce fungal disease risk (PlotMyGarden).
Second-year flowering
6
In spring or summer of its second year, upright stems bear clusters of small yellow four-petalled flowers (RHS).
When to pick: RHS: "cropped virtually all year by staggering sowing dates"; plant outdoors "when large enough to handle (around 10in/25cm in height)". UMD: sow in March or September, "harvest at a few inches tall".
4 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.
Plan next season before the problems start
This page gives you the thresholds; the planner turns them into your own calendar. It works from what you can observe and measure in your garden rather than from dates written for somebody else’s latitude.
Science-based growing guides · Thresholds that hold in any climate
This guide states the conditions the plant itself responds to — soil temperature, frost tolerance, day length — rather than dates, because the same calendar month means opposite seasons in the northern and southern hemispheres. Anything genuinely restricted to one part of the world is named as such rather than presented as universal. Written and maintained by our editorial team against international horticultural research and extension sources.
Sketch your exact plot shape, pick your crops, and get a spacing-accurate bed layout with companion pairings and a rotation plan. Spacing, companion pairings and rotation are the same in every climate and both hemispheres — pair the layout it gives you with when to plant to set your own timing from soil temperature.
