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Rhubarb
Rheum x hybridum
Polygonaceae
First harvest: Year 2
Spacing: 75 × 90 cm
When to plant rhubarb in Australia
Plant rhubarb crowns in winter, June to September depending on zone. It does best in cool and temperate climates with a proper winter dormancy; not suited to arid or tropical zones, and even in subtropical areas it performs best in the cooler pockets. Avoid harvesting at all in the first year — let the crown establish, then pick lightly from year two.
Growing guide
Sunlight
4–6 hours direct sun per day
Watering
Medium — water when topsoil feels dry
Spacing
75cm between plants, 90cm between rows
Frost tolerance
Hardy — tolerates frost
Frequently asked
- How long before I can harvest rhubarb?
- Avoid harvesting entirely in the first year to let the crown establish. Pick lightly from year two, with a full harvest from year three.
- Is rhubarb safe to eat?
- Only the stalks. The leaves contain oxalic acid and should never be eaten, regardless of climate or variety.
- Can rhubarb grow in a warm climate?
- It struggles in true heat — not suited to arid or tropical zones, and even in subtropical areas it does best in cooler pockets with a shorter season.
- What pests affect rhubarb?
- Slugs and snails target young shoots in early spring — protect emerging growth with barriers or traps.
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