When to Plant Luffa 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.
Jump to section
This Luffa 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.
- Days to harvest
- 60 days
- Sun
- Full sun
- Water
- Regular
- Spacing
- 120 cm apart
- Soil pH
- 6.0–7.0
Luffa is a tropical/subtropical cucurbit vine grown for edible young fruit (eaten as a vegetable) and mature dried fruit (natural sponge). Two species are cultivated: smooth luffa (L.
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Planting Calendar for Cold / Highland
Luffa is not recommended for Cold / Highland.
Luffa needs 100-180 frost-free, hot days to form mature sponges, which the short highland summer cannot supply. Not worth attempting outdoors.
Want a nudge when it is sowing time?
One email a week with what is worth planting in the Cold / Highland zone right now, Luffa included, plus which veg has jumped in price at the supermarket. Free, and you can stop it in one click.
How to Grow Luffa in Cold / Highland Australia
- Soil
- Rich, well-drained soil with generous compost and aged manure. Heavy feeder like most cucurbits.
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- pH Range
- 6.0-7.0
- Sunlight
- Full sun (minimum 8 hours). The more sun and heat, the better.
- Spacing
- 120cm apart, 200cm between rows
- Watering
- Very heavy water demands during fruiting. Deep, consistent watering essential. Drought stress causes flower drop and misshapen fruit. Drip irrigation recommended.
- Good companions
- Dwarf Beans, Onion, Sweet Corn, Peas, Sunflower
- Keep away from
- Potato
- Grow before it
- Leafy greens and brassicas (Lettuce, Silverbeet, Broccoli)
- Grow after it
- Roots and alliums (Carrot, Beetroot, Onion)
Give the bed 3 turns before cucurbits go back in. Pumpkin, cucumber and zucchini want a bed with fresh compost dug through.
Cold / Highland Growing Tips for Luffa
Recommended Varieties
- Not viable
Key Challenges
- Total crop failure guaranteed outdoors
Pro Tips
- Not possible. Not even in a greenhouse in most cases.
- Purchase luffa sponges rather than trying to grow them here
Pests and problems for Luffa in Cold / Highland
Harvesting Luffa
When ready: For eating: harvest when 15-25cm long, bright green, and skin scratches easily with fingernail (tender). For sponges: leave on vine until skin turns brown, fruit feels light and papery, and you can hear seeds rattling inside.
How to harvest: Eating: cut with secateurs. Sponges: cut from vine when completely dry. If frost threatens before sponges are ready, cut and bring indoors to finish drying.
Storing and preserving luffa
How to keep it
- Freezing (Young Eating Fruit). Slice young ridged luffa. Blanch 2 minutes. Ice bath. Drain, flash-freeze on tray, bag. Keeps: 6-8 months.
- Stir-fry and Freeze. Slice young luffa and stir-fry with garlic, ginger and soy sauce for 2 minutes. Cool, portion and freeze. Keeps: 3 months.
- Dehydrating (Young Fruit). Slice young luffa thinly (3mm). Arrange on dehydrator trays. Dry at 60C for 6-10 hours. Store in airtight jars. Rehydrate in soup or stir-fry. Keeps: 12 months.
- Sponge Processing. Leave fruit on vine until brown, dry and light. Soak dried fruit in water for 1-2 days to loosen skin. Peel off outer skin and shake out seeds. Rinse sponge thoroughly, squeezing out dark sap. Soak in dilute bleach solution (1 tbsp per litre) for 30 minutes to whiten (optional). Dry in sun completely. Store dry. Keeps: Years (as a sponge).
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 Luffa
When do you plant luffa in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Jan, Mar to May, Sep to Dec
- Subtropical (Brisbane): Sep to Dec
- Warm Temperate (Sydney): Sep to Dec
- Cool Temperate (Melbourne): Oct to Dec
- Cold / Highland (Canberra): not recommended
- Arid / Semi-Arid (Alice Springs): Sep to Dec
- Mediterranean (Perth): Sep to Dec
When should I plant Luffa in Canberra?
Luffa needs 100-180 frost-free, hot days to form mature sponges, which the short highland summer cannot supply. Not worth attempting outdoors.
What soil temperature do Luffa need?
Luffa germinate best when soil temperature is between 22°C and 35°C.
How do I know when Luffa are ready to harvest?
For eating: harvest when 15-25cm long, bright green, and skin scratches easily with fingernail (tender). For sponges: leave on vine until skin turns brown, fruit feels light and papery, and you can hear seeds rattling inside.
What are the best Luffa varieties for Canberra?
Recommended varieties for the Cold / Highland zone include: Not viable.
What grows well with Luffa?
Good companion plants for Luffa include: Dwarf Beans, Onion, Sweet Corn, Peas, Sunflower.
Are luffa salt tolerant?
Only a little. Luffa 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.