When To Plant Cosmos In Adelaide

Wondering when to plant cosmos flowers in Adelaide? Spring and summer are the perfect time.

Cosmos is always a flower I recommend growing because it is one of the few flowers that is really happy in Australian heat. For that reason, the best time to plant cosmos in Adelaide is in spring and summer. I’ve also tried planting it when it was autumn and the results were a bit so-so!

There are lots of awesome varieties of cosmos, but I love the Cosmos Purity variety that has a a daisy like white flower and bright yellow centre colour, as well as the very sweet pink Cupcake Blush variety you can get at Transition Farm.

And if you are looking for other summer flowers to complement cosmos, you may like my Seasonal Planting Calendar below which includes a number of other options for the season. Happy planting!

The cosmos I grew in my backyard (above) grew almost as tall as my head! I grew all of the cosmos flowers from seed.

Fresh and pretty cosmos is a great option to plant in Adelaide in spring!

Looking for more information? Check out my 2024 Growing Dahlias Guide or 6 Great Cut Flowers To Grow In Australia.