How To Grow Sunflowers From Seeds In Australia. Push the seeds into the soil to a depth of about 2.5cm. Sow sunbird sunflower seeds 1cm deep spacing plants about 25cm apart to give them room to grow.
Sunflowers are annual plants, which means they don’t come back year after year. The plants have to be planted with enough room between them. Push the seed 1.5cm into the compost and water in.
The good new is that sunflowers are really easy to start from seeds and require little effort.
A timely sunflower harvesting can yield more so harvest them when the moisture content of seeds is 20 %. Water seeds daily until the seedlings appear. In tropical areas of australia sow sunbird sunflower seeds during the dry season from april to august. Sunflower seeds are manageable and easy for little fingers to handle.