Tropical
Open climate guide →JanPlantFebPlantMarPlantAprPlantMayPlantJunPlantJulPlantAugPlantSepPlantOctPlantNovPlantDecPlant
Aim for January, February, March, April, May, June, July, August, September, October, November, December.
Grow to Eat
When to plant Sweet potato in Australia
A practical climate-by-climate planting calendar plus detailed starting, care, problem and safety guidance.
StartPlant slipsLightFull sunTiming18–24 weeksDifficultyEasy
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Australian planting calendar
Best months by climate
Highlighted months are the usual planting window. A local nursery, seed packet and current weather forecast should take priority over a broad climate calendar.
Subtropical
Open climate guide →JanPlantFebPlantMarPlantAprWaitMayWaitJunWaitJulWaitAugPlantSepPlantOctPlantNovPlantDecPlant
Aim for August, September, October, November, December, January, February, March.
Warm temperate
Open climate guide →JanPlantFebPlantMarWaitAprWaitMayWaitJunWaitJulWaitAugWaitSepPlantOctPlantNovPlantDecPlant
Aim for September, October, November, December, January, February.
Cool temperate
Open climate guide →JanPlantFebWaitMarWaitAprWaitMayWaitJunWaitJulWaitAugWaitSepWaitOctPlantNovPlantDecPlant
Aim for October, November, December, January.
Mediterranean
Open climate guide →JanPlantFebPlantMarWaitAprWaitMayWaitJunWaitJulWaitAugWaitSepPlantOctPlantNovPlantDecPlant
Aim for September, October, November, December, January, February.
Semi-arid
Open climate guide →JanPlantFebPlantMarWaitAprWaitMayWaitJunWaitJulWaitAugWaitSepPlantOctPlantNovPlantDecPlant
Aim for September, October, November, December, January, February.
Arid
Open climate guide →JanPlantFebPlantMarWaitAprWaitMayWaitJunWaitJulWaitAugWaitSepPlantOctPlantNovPlantDecPlant
Aim for September, October, November, December, January, February.
Start well
Plant sweet potato with confidence
Plant slips. Prepare the final position first, retain the existing root-ball level and water thoroughly after planting.
- Sowing or planting depth
- Plant at the existing crown or root-ball level unless the label specifies otherwise.
- Germination or establishment
- Not normally started from seed in this guide; establishment speed depends on plant size, season and root condition.
- Spacing
- 30–45 cm
- Soil
- Loose, stone-free soil that drains freely; usually ph 6.0–7.0.
Feeding
Support steady growth
Use mature compost and avoid excessive nitrogen, which can favour leaves over roots.
Water
Keep moisture balanced
Water consistently while roots swell, without leaving the bed waterlogged.
Maintenance
What to do as it grows
Thin early and avoid disturbing the root zone once plants are established.
Harvest or display
Know when it is ready
18–24 weeks. Readiness varies with variety and weather; use colour, firmness, size and the supplier's maturity notes rather than the calendar alone.
Problems and companions
Keep your patch healthy
Common watch-outs
Uneven watering, compacted soil and root-feeding pests can distort or split roots.
Useful neighbours
Leafy greens and small herbs can use nearby space without competing deeply; avoid overcrowding the root row.
People and pets
Safety note
No Patch-specific toxicity warning is recorded. That does not prove the plant is safe—check the exact species with a veterinarian or poisons service if children or pets may eat it.
Moving plants
Biosecurity note
Check local weed, invasive-plant and interstate quarantine rules before sharing or moving unfamiliar plant material.
Transparent guidance
How to use this guide
Patch gives a broad Australian starting point, not a guarantee for every variety or garden. Read the Patch methodology and sources, check the latest Bureau of Meteorology climate information, and confirm interstate restrictions through Australian Interstate Quarantine.
Last reviewed 3 September 2026