Potato Onion (Bulb)

Allium cepa var. aggregatum

Bulb, Supplied Loose (NOT FOR NT, TAS, WA)

In Stock
Minimum Order Quantity 5

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Potato Onion (Bulb)

Allium cepa var. aggregatum


A easy to grow onion, to 40cm tall and producing clumps of 10-12 bulbs under the soil's surface. This Australian heirloom variety from the late 1800s is often referred to as a 'perennial' because bulbs can be left in the ground to reproduce and it is also easy to lift, save and replant the bulbs year after year.

Bulbs are the size of small onions with a flavour somewhere between onions and milder shallots; they can be used in place of shallots and roast and caramelise well. The tops of the green leaves can also be eaten like a spring onion, leaving at least half the height to provide energy for the bulbs to grow. Bulbs store for 6-8 months.

Also called 'hill', 'mother', 'multiplier', 'pregnant', 'nesting' or 'underground' onions.

Product code: Z-SHA-05

Quick Planting Guide
Method Sow direct
Sowing Depth 5cm
Season Autumn and winter
Hardiness / Life Cycle Frost hardy Biennial
Row Spacing 20cm
Plant Spacing 20cm
Plant Height 40cm
Position Full sun, well drained soil

How To Grow

  1. Choose a location in full sun with well draining soil.
  2. Dig over soil; alliums prefer a rich, loamy soil without manure added.
  3. Space rows 20cm apart.
  4. Plant bulbs 20cm apart with the pointed tips facing upwards.
  5. Plant 5-8cm deep so the tips are still visible above the soil.
  6. Keep well watered during warm weather.
  7. Harvest when leaves begin to fall over and before the plant flowers.
  8. Cure bulbs in a shady, well-ventilated area for 2-3 weeks before cutting the dried leaves off 3-4cm above the bulb.
  9. Store in a cool, dry place.


We deliver Australia wide.

All orders are dispatched from our warehouse in Knoxfield, Victoria, Australia.

We do not deliver overseas.

Shipping cost is calculated using all the items in your shopping cart and your delivery postcode. The table below outlines the delivery options and costs.

Order dispatch time is currently 1-3 business days plus delivery time.
Please note we are unable to guarantee specific delivery dates, the delivery timeframes below are estimates only.


Order contains: Delivery options: Delivery cost per order
Small seed packets ONLY - Economy Delivery $2.50 or FREE on orders over $20 $5
Parcel Delivery Capped rate of $6.99
Express Delivery $15.00

BULK seed, garden supplies, tools, or accessories -

Parcel Delivery

Capped rate of $6.99

Express Delivery

Starting from $15.00
(Calculated by weight)
Live Plants - Live plants Capped rate of $10.00

*All orders sent to Western Australia are subject to mandatory inspection and fees by Quarantine WA. These fees are included in all shipping costs above.

**We will replace all orders that are lost or damaged in transit however we will not replace or refund orders simply because they were delivered later than estimated. Full details here.


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