When to Plant Broccolini in Canberra, Cold / Highland Guide
Soil temperature is modelled from Open-Meteo forecast (Canberra), not a live sensor.
What this month normally looks like in Cold / Highland
In October the Cold / Highland zone normally runs 20°C by day and 7°C overnight, with about 58 mm of rain over 7 or 8 wet days. The coldest October night on record across the zone was -6.4°C, so a late frost is not out of the question. Averages 1991 to 2026, 15 postcodes, SILO.
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This Broccolini guide is written for the Cold / Highland zone, which takes in Canberra, Cooma and Bright. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Brisbane Sydney Melbourne Alice Springs Perth
Also handy: will it frost this week? and what grows in shade.
- Planting window
- Oct to Apr
- Days to harvest
- about 11 weeks
- Sun
- Full sun
- Spacing
- 30 cm apart
Broccolini is a cross between broccoli and Chinese broccoli (gai laan). You eat the tender stems, the leaves and the small flower buds.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Planting Calendar for Cold / Highland
- Jan S/T
- Feb S/T
- Mar S/T
- Apr T
- May -
- Jun -
- Jul -
- Aug -
- Sep -
- Oct S
- Nov S/T
- Dec S/T
S = Seed Tray T = Transplant D = Direct Sow
Want a nudge when it is sowing time?
One email a week with what is worth planting in the Cold / Highland zone right now, Broccolini included, plus which veg has jumped in price at the supermarket. Free, and you can stop it in one click.
How to Grow Broccolini in Cold / Highland Australia
- Soil
- Deep, well drained soil with compost, well rotted manure and blood and bone (Bunnings). Choose a spot that did not grow brassicas last year (Baag).
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- Sunlight
- Full sun (Seed Station, Bunnings).
- Spacing
- 30cm apart, 30cm between rows
- Watering
- Water deeply 2 to 3 times a week, and more in warm or dry weather (Bunnings). Baag says to check by pushing a finger into the soil. Without water the plants bolt (Gardenate).
- Good companions
- Nasturtium, Dwarf Beans, Onion, Cucumber, Dill
- Keep away from
- Tomato, Climbing beans, Capsicum and chilli, Eggplant
- Grow before it
- Legumes (Beans - Dwarf, Peas, Broad Beans)
- Grow after it
- Fruiting crops (Tomato, Capsicum, Zucchini)
Give the bed 3 turns before brassicas go back in. The cabbage family is hungry for nitrogen and shares club root and other soil diseases.
Cold / Highland Growing Tips for Broccolini
Recommended Varieties
- Broccolini
- Broccoletti
Key Challenges
- Frost on young plants
- Short growing season
- Slugs and snails
Pro Tips
- Start in trays under cover
- Plant out after the worst frosts
- Use cloches early
Pests and problems for Broccolini in Cold / Highland
- Common Garden Snail Watch
- Slugs Slugs and snails Watch
- Aphids Watch
- Clubroot Rotate brassicas. Baag advises not growing brassicas in the same spot as the previous year, and Bunnings notes rotation reduces clubroot... Watch
- Fungal diseases in warm, humid weather Space plants well for airflow, water at the base and rotate beds (Bunnings). Watch
Harvesting Broccolini
When ready: Pick the main stem while the buds are still tight and green, before they open into yellow flowers (Gardenate: pick as soon as possible).
How to harvest: Cut the stem with a sharp knife. Leave the plant in the ground. Side shoots keep developing and can be picked for several weeks (Bunnings, Gardenate).
Storing and preserving broccolini
How to keep it
- Refrigeration. Bunnings says broccoli keeps in the fridge for up to 5 days. We have assumed the same for broccolini. No freezing instructions were read. Keeps: Up to 5 days (broccoli).
What members get
- Soil and weather from your nearest station
- An email when it's time to sow
- Your own garden plan, including planning from a photo
- Price history and price alerts
- Pest risk alerts for your area
- Full salt and canning detail
Common Questions About Broccolini
When do you plant broccolini in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Apr to Aug
- Subtropical (Brisbane): Feb to Jun
- Warm Temperate (Sydney): Feb to Jun
- Cool Temperate (Melbourne): Jan to Apr, Oct to Dec
- Cold / Highland (Canberra): Jan to Apr, Oct to Dec
- Arid / Semi-Arid (Alice Springs): Feb to Aug
- Mediterranean (Perth): Feb to Jun
Can you grow broccolini all year round in Canberra?
No. In the Cold / Highland zone the planting months are Jan to Apr, Oct to Dec. Outside that window it either bolts, sulks or gets cut down by the weather.
When should I plant Broccolini in Canberra?
Seed Station lists October to March for cool mountain areas. Start seed in trays and plant out 4 to 6 weeks later. Seed Station notes the plant can live on for years in cool climates. Frost on young plants is the main risk.
What soil temperature do Broccolini need?
Broccolini germinate best when soil temperature is between 7°C and 30°C.
How do I know when Broccolini are ready to harvest?
Pick the main stem while the buds are still tight and green, before they open into yellow flowers (Gardenate: pick as soon as possible).
What are the best Broccolini varieties for Canberra?
Recommended varieties for the Cold / Highland zone include: Broccolini, Broccoletti.
What grows well with Broccolini?
Good companion plants for Broccolini include: Nasturtium, Dwarf Beans, Onion, Cucumber, Dill.
Are broccolini salt tolerant?
Only a little. Broccolini are moderately sensitive to salt, so the harvest drops on salty bore water. Mix salty water with rainwater, and mulch the bed.
Which zone am I in?
Type your postcode into the box near the top of the page and it tells you, and links this crop in your own zone if it differs. Or look it up on the grow zone map. This page is the Cold / Highland zone, Canberra is its reference city.