Growing Rosella, also Queensland Jam Plant, Roselle

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

(Best months for growing Rosella in Australia - sub-tropical regions)

P = Sow seed

  • 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

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

08 Oct 21, Brin & Christine (New Zealand - temperate climate)
We grow the Rosella bush here in south east Queensland, they make delicious tart jam. Can be mixed with Mango for an interesting blend. I have a half jar left before we return to NZ in Jan 2022. I hope to find someone with a heated glasshouse in Christchurch to grow some from seed. cheers
06 Jun 21, Greg McFarlane (Australia - tropical climate)
Rosella plant is looking healthy & producing fruit, but some of the upper branches go brown & leaves & fruit wither. Looks like you bleach the colour out of branch. Located Mackay Should I put copper oxychloride at ground level or another solution
26 May 21, Joanne L Hilder (Australia - sub-tropical climate)
My Rosella bushes are currently very productive and making lots of jam. However i am not sure what to do when the fruit is flowers are finished. Do I prune or pull up and start again in Sept/Oct with new seedings? I live is suburban Brisbane. I would love some advice from experienced growers.
06 May 21, Rosaleen (Australia - tropical climate)
Bugs are eating my rosella bush. What natural spray could I use? Thank you
10 May 21, Anonymous (Australia - sub-tropical climate)
look up the internet, usually a chilli garlic mix soap mix.
29 Mar 21, Manfred Widmer (Australia - tropical climate)
My Rosella Plants growing very good, I had the first harvest after about 3 months. Now since 2 months there is no sign of new flowers. What Fertilizer should I use?
30 Mar 21, (Australia - temperate climate)
Any general fertiliser will do.
17 Mar 21, Anita (Australia - sub-tropical climate)
Wonderful rain and more to come however - will my plot of rosellas that are ready to harvest survive this comfortably? I usually have a dry growing season being west of Ipswich. We have customers for the fresh fruit so I am getting a bit nervous about the fruit until we start picking soon. Thankyou
18 Mar 21, Anonymous (Australia - sub-tropical climate)
The dangers of growing a lot of vegies this time of the year is the weather. If you do, then you run the risk of the weather ruining or damaging your crop. 4-5-6 inches of rain in an hour or so can make a mess real quick. That is why I don't start planting until this month. A quick downpour maybe ok, but prolong wet weather could lead to disease, fungus and insects (grubs). Keep a close eye on them. It is your call when to pick.
08 Mar 21, Bruce Ray (Australia - sub-tropical climate)
I have just purchased a mature rosella plant .. It already has fruit. I understand soil conditions needed but am not sure of sunshine requirements. live in NNSW 60 km from the coast. Like your site! Thank you in advance
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