Growing Sunflower in Australia: The Complete Guide
Sunflower is an easy grain & staple to grow, needing full sun with moderate, drought-tolerant once established watering.
Sunflower is one of the easy additions to a home garden, and this article walks through everything behind our one-page printable guide in a bit more depth.
Grown for seed and oil
Beyond a cheerful garden feature, sunflower heads produce a substantial crop of seed for eating, oil pressing, or poultry feed — a genuinely useful homestead crop.
Getting Sunflower Into the Ground
Method — direct sow once frost risk has passed. Soil — well-drained, tolerates a range of soils. Timing — sow in spring.
Keeping It Growing Well
The key things to get right:
- Water regularly while establishing, then reduce — deep roots find their own moisture.
- Stake very tall varieties in windy positions.
- Protect developing seed heads from birds if you want to harvest seed yourself.
- Support heavy heads if needed as seed fills.
Problems to Watch For
A few things matter most here:
- Birds — will strip a ripening head quickly; net if harvesting for yourself.
- Powdery mildew — late-season on leaves; largely cosmetic.
- Stem lodging — wind damage on tall varieties; stake if exposed.
- Few significant pests otherwise — a generally easy crop.
When and How to Harvest
Signs — back of the head turns brown/yellow, seeds are plump and firm. Method — cut the whole head, hang to finish drying. Curing — dry heads fully before rubbing out seed. Storage — airtight, cool, dark — keeps many months.
That's the full picture behind sunflower. The printable A4 version of this guide — with the quick-reference gauges and diagram in one page — is available on the main guide page below.