When to plant rosella in Melbourne
Honest answer: rosella is a poor fit for Melbourne. Rosella is frost-sensitive and your climate has frost months that block the growing window. If you're set on trying, treat it as an experiment — a sheltered microclimate or pots you can move may stretch the rules.
Cool temperate zone tip
Marginal in Melbourne. Start indoors early and use your warmest microclimate; the crop may be small.
Frost matters here: the last frost around Melbourne typically falls in September, with the first returning around May. Rosella is frost-sensitive, so keep it inside that frost-free run.
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Can you grow rosella in Melbourne?
Melbourne's cool temperate climate makes rosella a poor fit: Rosella is frost-sensitive and your climate has frost months that block the growing window.