How to Grow Broccolini UK
On this page
- Broccolini (Brassica oleracea var. italica x Brassica...
- When to Plant Broccolini in the UK
- Quick Facts
- At a Glance
- Soil & Growing Conditions
- Growth Stages
- Harvest & Storage
- Diseases
- Pests
- Broccolini, a Distinct Broccoli x Gai Lan Hybrid
- Plan your Broccolini planting
- Growing Broccolini in another region
- References
- Frequently Asked Questions
In the UK, broccolini goes in the ground early March to early May.
Timing is the decision that matters most in the UK: sowing early March, and that same window applies across all 4 regions covered here.
The short answer
- Plant
- Early March to early May
- Site
- soil pH 6–7
- Biggest risk
- Powdery mildew
Core growing advice on this page is checked against named horticultural sources — see References.
Broccolini (Brassica oleracea var. italica x Brassica oleracea var. alboglabra)
1 sources cited · Single source
When to Plant Broccolini in the UK
When to plant broccolini in the UK: in Southern England, sow early March to early May. Find your area in the table below.
Quick Facts
At a Glance
Soil & Growing Conditions
Growth Stages
Harvest & Storage
Diseases
Pests
Broccolini, a Distinct Broccoli x Gai Lan Hybrid
Plan your Broccolini planting
When to sow and plant Broccolini depends on your own frost dates. Check the UK vegetable planting calendar. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.
Growing Broccolini in another region
Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.
References
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A secondary gardening reference rather than a university or horticultural authority, used as the primary source as no university or horticultural-authority growing profile exists for this specific commercial hybrid, explicitly disclosed. A hybrid cross between European broccoli (Brassica oleracea var. italica) and Chinese gai lan (Brassica oleracea var. alboglabra), producing many small flowering shoots on thin tender stems rather than one large head. First commercialised in Mexico in 1994, rebranded "broccolini" in 1998. Full sun. Soil: nutrient-rich, well-draining, pH 6.0-7.0, amended with 2in of compost or aged manure. Spacing 12in apart in rows 2ft apart, sown 1/4in deep or started as transplants 4-6 weeks before last frost, planted out at 6-8 true leaves, transplanted 1/2in deeper than pot soil. Matures 60-90 days from transplanting. Harvest the main crown with 6in of stem once heads form but before flowering (typically 2-3 months after planting), then harvest side shoots by cutting each stem just above a set of green leaves -- potentially 3-5 harvests per plant. The entire plant is edible: curly green leaves, small florets, and long stems. Pests: aphids, cabbage loopers, flea beetles, slugs, root maggots. Diseases: blackleg, black rot, downy mildew, powdery mildew.
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 broccolini 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 broccolini?
Sow early March to early May.
What soil pH does broccolini need?
A pH of about 6–7. 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.
What problems affect broccolini?
Our data links 4 diseases and 5 pests to this crop. See the sections above for each one and how to manage it.
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.
Get the UK Garden Planner →Instant PDF download · Written for UK growing conditions
How this guide is put together
The growing data on this page — sowing windows, pests, diseases, soil and site requirements — comes from named horticultural sources, listed in References below, checked against RHS and Met Office guidance. An automated pipeline assembles that verified data into the page you're reading: it selects which facts to lead with and builds the surrounding prose and layout. It does not invent a date, a source or a number — where a verified value for a field isn't available, the page leaves it out rather than guessing. A person reviews and publishes each page; nothing goes live unverified.
Related Problem Guides
Last verified 2026-08-29
Plan Broccolini by month
The months this guide gives for sowing or planting, each with the full list of jobs for that month in the UK:
More from the same group (brassicas & mustards):
Growing advice for your part of the UK
Timing and conditions change a lot inside one country. These guides cover frost dates and growing seasons region by region.
Where To Go From Here
Take this crop from reading into a written plan for your own beds.
Keep going
Plan the next step
Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.