When to Plant Krachai in Brisbane, Subtropical Guide
That soil figure is read off our own weather station in South East Queensland at 6:55 this morning, not a model.
What this month normally looks like in Subtropical
In October the Subtropical zone normally runs 27°C by day and 15°C overnight, with about 77 mm of rain over 7 wet days. The coldest October night on record across the zone was -0.2°C, so a late frost is not out of the question. Averages 1991 to 2026, 33 postcodes, SILO.
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This Krachai guide is written for the Subtropical zone, which takes in Brisbane, the Gold Coast and the Sunshine Coast. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Sydney Melbourne Canberra Alice Springs Perth
Also handy: will it frost this week? and what grows in shade.
- Planting window
- Sep to Nov
- Days to harvest
- about 34 weeks
- Sun
- Full sun to part shade
- Water
- Regular
- Spacing
- 20 cm apart
Krachai, also called fingerroot or Chinese keys, is a tropical ginger relative 50 to 70 cm tall grown for a cluster of finger like rhizomes with a peppery, aromatic taste, used raw, pickled and in Thai curries (Green...
Published · By GardenBuddy.au
Planting dates, current conditions and prices on this page update daily.
Photo: Wikimedia Commons
Best Planting Window for Subtropical
- Jan -
- Feb -
- Mar -
- Apr -
- May -
- Jun -
- Jul -
- Aug -
- Sep P
- Oct P
- Nov P
- Dec -
P = Planting window
Plant rhizome pieces from September to November once the soil has warmed (Green Harvest). Krachai is a tropical perennial that needs a frost free spot, rich well drained soil and plenty of water; harvest when the leaves yellow and die down, about 8 months later (Green Harvest, JIRCAS). Months are our estimate.
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How to Grow Krachai in Subtropical Australia
- Soil
- Loamy, fertile, well drained soil with compost (Green Harvest).
- Salt
- Moderately sensitive. Copes with a little salt, but the harvest drops on salty bore water.
- pH Range
- 6.0 to 7.0 (as for ginger in our database; no krachai figure found).
- Sunlight
- Full sun to part shade; afternoon shade in hot dry areas.
- Spacing
- 20cm apart, 30cm between rows
- Watering
- Needs about 1500 mm of rain a year or the equivalent irrigation; water daily in dry weather, then stop once leaves yellow in autumn (Green Harvest).
- Good companions
- Turmeric, Galangal
- Grow before it
- Fruiting crops (Tomato, Capsicum, Zucchini)
- Grow after it
- Legumes (Beans - Dwarf, Peas, Broad Beans)
Give the bed 3 turns before root crops go back in. Roots fork and go leafy in fresh manure, so they take the bed after the heavy feeders have used it.
Subtropical Growing Tips for Krachai
Recommended Varieties
- Unnamed Green Harvest stock
Key Challenges
- Frost on low ground
Pro Tips
- Plant on ridges in free draining soil (Green Harvest).
- Harvest when the tops die down (Green Harvest).
Pests and problems for Krachai in Subtropical
Harvesting Krachai
When ready: Leaves yellow and die down, about 8 months after planting (Green Harvest, JIRCAS).
How to harvest: Fork up the clump, shake off soil, keep some rhizomes for replanting.
Storing and preserving krachai
How to keep it
- Freezing. Peel, grate, freeze in ice cube trays. Keeps: 6 months.
- Fresh storage. Store unwashed rhizomes in the crisper or in dry sand in a cool shed. Keeps: 2 to 3 weeks in the fridge; months in sand.
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 Krachai
When do you plant krachai in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Oct to Dec
- Subtropical (Brisbane): Sep to Nov
- Warm Temperate (Sydney): Oct to Nov
- Cool Temperate (Melbourne): Oct to Nov
- Cold / Highland (Canberra): not recommended
- Arid / Semi-Arid (Alice Springs): Oct to Nov
- Mediterranean (Perth): Oct to Nov
When should I plant Krachai in Brisbane?
Plant rhizome pieces from September to November once the soil has warmed (Green Harvest). Krachai is a tropical perennial that needs a frost free spot, rich well drained soil and plenty of water; harvest when the leaves yellow and die down, about 8 months later (Green Harvest, JIRCAS). Months are our estimate.
What soil temperature do Krachai need?
Krachai germinate best when soil temperature is between 20°C and 30°C.
How do I know when Krachai are ready to harvest?
Leaves yellow and die down, about 8 months after planting (Green Harvest, JIRCAS).
What are the best Krachai varieties for Brisbane?
Recommended varieties for the Subtropical zone include: Unnamed Green Harvest stock.
What grows well with Krachai?
Good companion plants for Krachai include: Turmeric, Galangal.
Are krachai salt tolerant?
Only a little. Krachai 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 Subtropical zone, Brisbane is its reference city.