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Growing Rosella, also Queensland Jam Plant, Roselle

Jan F M A M J J A S O N Dec

Not recommended for growing in USA - Zone 5a regions

  • Sow in garden, or start in seed trays. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 20°C and 35°C. (Show °F/in)
  • Space plants: 140 cm apart
  • Harvest in 21-25 weeks.
  • Compatible with (can grow beside): Feverfew, Coriander, Nasturtium and Hyssop
  • Rosella bud
    Rosella bud

This frost tender annual grows to a height of 2 metres. It is grown for its red fruit which make delicious jam or jelly.

Rosella needs a growing season of at least 6 months warm weather so is best suited to tropical or sub-tropical areas. Can be started under glass in cooler areas. Water well and give a dressing of fertiliser when flowering starts.

Culinary hints - cooking and eating Rosella

The large flowers produce a crimson enlarged calyx.
Use the fleshy red calyx, without the green seed pod to make jam or jelly.

Your comments and tips

19 Mar 18, kevin (Australia - temperate climate)
I cut back on watering and since them they have we have had a great crop
16 Mar 18, Vicky (Australia - sub-tropical climate)
I am on the Sunshine Coast in Qld and have the same problem. My rosellas look fantastic, thick and lush, have had heaps of hot weather, heaps of rain and I prepaired the beds with horse manure, potash and a bit of blood and bone before planting. No fruit yet and it is now March. Maybe I put too much nutrient in. So looking forward to making jam!
18 Mar 18, Mike (Australia - sub-tropical climate)
You are probably right - too rich a soil and plenty of water and heat. Manure potash and B&B don't have a real lot of N unless you put heaps on. Back off the watering if possible. If possible plant some leafy crop close by to take some N out of the soil.
17 Feb 18, Mem (Australia - sub-tropical climate)
Same problem with our rosellas. We're on Blackall Range Qld. Last year they flowered when they were tiny.
14 Feb 18, Teresa (Australia - sub-tropical climate)
Hi ,I love my Rosella Jam but find I have a lot of trouble with Ants on the plants , sometimes the trees are black with them , I hear vinegar is good is that true , Regards Teresa
16 Feb 18, Mike (Australia - tropical climate)
A product called Fortune 500. Check out the product label to see if it can be used near vegies etc. Maybe around the edge of the garden bed.
12 Feb 18, Kathi (Canada - Zone 6b Temperate Warm Summer climate)
Where can I buy Roselle seeds or plant please
10 Feb 18, Rachael (Australia - tropical climate)
My Rosellas are thick and healthy but still no fruit. They should have fruits by now. Feel like pulling them out as they are wasting so much space with 20 plants. There is nothing on the Internet about this.
12 Feb 18, Mike (Australia - tropical climate)
The info here says plant Oct to Dec and it takes 21-25 weeks - so you have planted out of season maybe. Maybe you used too much fertiliser. Plants will go to seed or fruit when the nutrient has been used up or when the season is right. Most vegies are seasonal to each climate zone.
21 Jan 18, Andrew (Australia - temperate climate)
If hey get too wet they can die suddenly. I've just had a couple die off quickly.
Showing 1 - 10 of 348 comments

You can freeze them till you have enough from next picking

- Dave

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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