When to plant Broccoletti in Subtropical Australia
Subtropical zone — applies to Brisbane, Gold Coast, Sunshine Coast, Coffs Harbour, Lismore and similar areas. Growing elsewhere? Temperate · Cool · Tropical · Arid.
Raise broccoletti seedlings from February to May and transplant them out once the worst summer heat has broken. Seed germinates quickly, in 5–10 days, at a sowing depth of 5 mm, and plants are ready to cut in 60–90 days. Space transplants 30–40 cm apart in rows 40–50 cm apart to give the leafy heads room. This hardy brassica thrives in the mild, frost-free subtropical winter, so an autumn start around Brisbane or Lismore lets plants mature through the cool, dry season when pest pressure eases and the sweet, tender shoots come on strong.
Sowing calendar — subtropical zone
Green months are your sowing window: February to May.
Growing notes
Broccoletti is a fast, forgiving brassica that suits the subtropical cool season well, provided you start it as the summer wet winds down. Sow too early and seedlings bolt in the heat; wait until February to May and they settle into steady growth.
The standout problem here is cabbage white butterfly and cabbage moth, whose caterpillars shred young leaves and hide in the developing shoots. The reliable fix is exclusion netting over the bed from transplant day, which physically keeps the moths off. Check under leaves regularly and squash any clusters of yellow eggs you find.
Grow broccoletti in full sun with steady moisture and rich, well-drained soil. Feed with a nitrogen-leaning fertiliser every few weeks to keep leaves dark and lush, and mulch to hold moisture through any warm spells. Harvest the central shoots young, before the buds open, and side shoots will keep coming for weeks. Around the Gold Coast and Sunshine Coast, an autumn planting carries right through winter into early spring.
Broccoletti at a glance
| Sowing depth | 5 mm |
|---|---|
| Plant spacing | 30-40 cm |
| Row spacing | 40-50 cm |
| Germination | 5-10 days |
| Days to maturity | 60-90 days |
| Frost tolerance | Hardy |
| Method | Plant Seedlings |
Common questions
- when to plant broccoletti in Brisbane
- Raise seedlings from February to May and transplant as the summer heat fades. Plants then mature through the mild subtropical winter, which is the sweet spot for brassicas. Starting later than May risks warm-season bolting.
- how do I stop caterpillars eating my broccoletti
- Cover the bed with fine exclusion netting from the day you transplant, so cabbage white and cabbage moth cannot lay on the plants. Inspect leaf undersides weekly and rub off any egg clusters. Netting is far more reliable than spraying alone.
- how long does broccoletti take to grow
- Broccoletti matures in about 60–90 days from transplant. Harvest the central shoot young, before the flower buds open, and side shoots will keep producing for several more weeks.
- why did my broccoletti bolt
- Bolting is usually triggered by heat or a dry check to growth. In the subtropics, sow from February to May rather than in the warm early summer, keep moisture steady, and harvest promptly once shoots form.
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