Satsuma Mandarin | Mandarins.com.au

Satsuma mandarin is the earliest-ripening variety grown in Australian backyards. It is seedless, very easy to peel, and cold-tolerant compared to other mandarins. The Satsuma is more commonly grown at home than sold commercially in Australia, but it suits gardeners in cooler climates who want mandarin season to start in April.

At a glance

Season: April to June (earliest of all mandarin types)
Peel: Soft, loose, puffy. Very easy to peel
Seeds: Seedless to nearly seedless
Flavour: Sweet, mild, low acidity
Size: Medium, slightly flattened shape
Best for: Backyard growing, early-season eating, children’s snacks, cool-climate gardens

Season in Australia

Satsuma is the first mandarin of the season. Bunnings notes that Satsuma hybrids (Miho Wase and Okitsu Wase) “are the first mandarins of the season,” preceding Imperial and clementine varieties. In Australia, Satsuma is typically ready from April, with some years delivering ripe fruit from late March in warmer locations.

The fruiting window is short at the commercial scale: Nurseries Online notes a marketing season of just three to four weeks before fruit becomes puffy and loses internal quality. For backyard trees, the fruit can hold on the tree for longer, though quality will decline if left too long after peak ripeness.

The Okitsu Wase and Miho Wase are the two Satsuma selections most commonly sold by Australian nurseries. Of the two, Okitsu is generally preferred for flavour, with taste tests showing Okitsu consistently rated ahead of Miho.

Flavour, peel, and seeds

Satsuma has a sweet, mild, and refreshing flavour with low acidity. Juice levels are good, and the flesh is a bright orange colour. The mild flavour means it is not as intense as Honey Murcott or Afourer but it is accessible and pleasant for all palates, including children.

The peel is the defining feature. Satsuma has a puffy, soft skin that pulls away easily from the flesh with almost no effort. This makes it extremely convenient as a snack. The interior flesh is firm enough to segment cleanly despite the loose outer skin.

Seedlessness is standard: Australian nursery sources consistently describe Satsuma as seedless or nearly seedless. One verified reviewer on Daleys Fruit described their Okitsu Wase as “prolific, heavy cropper” that produced “superior texture, flavour and seedless” fruit.

Where it is grown

Satsuma is not a major commercial variety in Australia. It is primarily grown in home gardens and small orchards. The main reason is that its short marketing window and soft fruit characteristics make commercial handling difficult. Nurseries Online notes it is “difficult to handle due to its soft fruit characteristic.”

Despite limited commercial presence, Satsuma is available in home garden nurseries across most of Australia. It grows in subtropical, warm temperate, and, importantly, cooler temperate zones. Bunnings notes that Satsuma mandarins are the most cold-tolerant mandarin variety, making them the best choice for Sydney, Melbourne, Adelaide, and cooler NSW or Victorian gardens.

Origin and history

Satsuma originates in Japan, where it has been cultivated for centuries under the name Unshiu or Unshu mikan. The name Satsuma comes from the Satsuma province (now part of Kagoshima Prefecture), from where it was exported to the West. It was introduced to Australia through trade and horticultural channels.

In Japan, Satsuma is by far the most commercially important mandarin variety. In Australia, its commercial role is limited, but it is valued by home gardeners and those in cooler climates who cannot grow many other citrus varieties reliably.

Best uses in the kitchen

Satsuma’s mild, sweet character suits direct eating, fruit salads, and simple preparations where the fruit is featured whole or in segments.

For juicing, Satsuma produces a clean, light juice. It is less intense than Honey Murcott or Afourer but refreshing and pleasant blended with other citrus.

For cooking, Satsuma works in lighter preparations: custards, panna cotta, and syrups where you want mandarin flavour without assertive bitterness. The zest is mild but usable in biscuits and simple cakes.

The peel is softer than most mandarins and dehydrates faster, so it is less suited to long-stored dried peel applications than firmer varieties.

How it compares

Satsuma vs Imperial: Imperial is more widely available commercially and has a slightly more complex flavour with better acidity. Satsuma is earlier, seedless, and easier to peel.

Satsuma vs Afourer: Afourer is more intensely flavoured and better represented in shops. Satsuma is earlier, colder-climate friendly, and more suitable for the home garden.

Satsuma vs Sumo (Dekopon): Sumo is a hybrid with Satsuma in its parentage. Sumo is much larger, later, and sweeter. Satsuma ripens months before Sumo.

Buying and storing

Satsuma is rarely sold by name in Australian supermarkets. If you find it at a growers market or specialist greengrocer, it will typically be in April or May. Choose firm-feeling fruit: the soft skin is normal, but avoid fruit that feels hollow or very lightweight.

The short postharvest life is worth noting. Satsuma deteriorates faster than other mandarins after harvest because of its soft peel. Use within one week of purchase, or keep refrigerated and use within two weeks.

Growing it at home

Satsuma is one of the best backyard mandarin choices for cooler climates. Bunnings notes it is the most cold-tolerant mandarin variety. A verified review from a grower near Queanbeyan (where temperatures can reach -6°C) noted their Okitsu Wase was “surviving well in unheated garage, with skylights” through the winter.

Australian nurseries sell grafted Satsuma trees in two main forms:

Okitsu Wase: fruits April to May. Preferred for flavour. Available from Daleys Fruit ($39), Nurseries Online, and Mt Martin Tropicals.
Miho Wase: fruits one week earlier than Okitsu. Slightly less preferred in taste tests.

Trees grow to 2 to 5 metres in the ground (Bunnings lists them at 2 to 4 metres). Dwarf forms suitable for large pots are available from some nurseries.

Satsuma trees have a slightly weeping growth habit, which can be ornamental. They are described as a fast grower once established and reliably productive from the second to third year after planting.

Plant in full sun with well-drained soil. Fertilise with citrus fertiliser in spring, summer, and autumn. Satsuma does not need cross-pollination to fruit; it is self-pollinating.

For more, see dwarf mandarin trees, mandarin tree care, and best backyard mandarin trees.