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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 68°F and 95°F. (Show °C/cm)
  • Space plants: 55 inches 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

12 Jun 18, Robert (Australia - tropical climate)
What’s the best time of year to pant the rosellas I’m in the innisfail area?
18 Jun 18, (Australia - sub-tropical climate)
Go back and read about rosellas here - the info is there.
26 May 18, Graham Donnelly (Australia - tropical climate)
The first year I planted Rosella plants , that was three years ago The plants took a long time to flower and fruit These plants grew approximately 3.5 meters tall They did fruit ok though These were fertilised only with Searls Dianamiclifter pellets These plants were given to me by a friend . Last year I purchased seeds from CRT at Gordonvale These seeds shot in the pots in three days in good potting mix , they were planted out in about 3 weeks This time I mixed into the soil Sulfate of Potash as well as Dianamiclifter pellets And plenty of water The plants started flowering when 100mm 4 inches high and never stopped This year the same thing I think a lot depends on the Type of seeds and area you are in. Good Luck
29 May 18, Mike Logan (Australia - temperate climate)
Small ones could have been dwarf rosella. I have snow peas growing one grows 4' high the other doesn't start flowering until it is 4-5' high and grows 8"+ high.
31 Mar 18, Poppy (Australia - sub-tropical climate)
I planted a Rosella suckling 6wks ago. The past few weeks a fungus had started due to the wet weather. I got that under control, I thought. I just noticed the new leaves are getting eaten on the tips and some of the leaves have "brownish orange scales" on the underside. I couldn't locate a caterpillar. Might it be a cutting insect? Help! it has been doing really well in the well prepared soil and drainage. Location outside of Bundaberg.
04 Apr 18, Mike (Australia - sub-tropical climate)
I live near Bundy but travelling at the moment. Look up the internet for the symptoms. Try a bit of shade cloth or similar to protect it from eating insects for awhile. Or put a plastic bottle over it (with top open) with some oil or grease on the out side of it to stop bugs climbing up into it.
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.
Showing 1 - 10 of 355 comments

we have abundent rosella bushes growing . they are now full of fruit and flowers. it is now mid may . I want to make jam with the fruit. whendo i know what it the best time to pick them, I live outer northern Brisbane region. many thanks sussanne

- sussanne

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