Onion Seeds (Allium cepa)

Onion Seeds (Allium cepa)

100% NZ Owned Family Business
Largest Certified Organic Range
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Onion Borettana
Onion Italian Long Keeper
Onion Pearl Drop
Onion Pukekohe Long Keeper
Onion Purplette
Onion Red Brunswick
Onion White Sweet Spanish
Onion Yellow Sweet Spanish
Organic Onion Florentine Red
Organic Onion Red Amposta
Organic Onion Walla Walla

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Shop Onion Seeds (Allium cepa)

Explore Kings Seeds’ diverse collection of bulbing onion seeds. As the largest supplier of certified organic seeds, our 100% NZ-owned family business offers heirloom, open-pollinated and organic varieties of bulbing onion seeds. From vibrant red onions to sweeter white types, long-storing browns and even shallots, our onion varieties cater to every gardener's needs. Start growing your own onions, a garden staple, and shop our collection of bulbing onion seeds now. 


What are the Different Varieties of Onion Seeds?

Our bulbing onion seeds range includes a range of varieties. From vibrant red onions with unique flavours such as Purplette and Red Brunswick to classic yellow onions that go perfectly in an array of meals and crisp white onions such as the White Sweet Spanish, Kings Seeds has onion seeds for every preference. Each variety will thrive in New Zealand's varied climates and soil conditions, ensuring a bountiful and delicious harvest.


When Do I Plant Onion Seeds?

Generally, onion seeds prefer cooler temperatures to germinate and grow so should be sown from autumn through winter to early spring depending on your location. Onion seed is best sown direct where you want them to grow although you can transplant seedlings. Consult our product information online for specific timing recommendations. 


When Should I Harvest Onions?

During their growth, onions will produce necks that sprout out of the ground and will grow straight upwards. Once the onion’s neck becomes soft and begins to naturally fall over and bend they are ready to harvest. This typically occurs 120 days from direct sowing, depending on the variety of onion seed. Harvest onions by pulling them out of the ground from the bottom of their necks. Once they are out of the ground, cure onions in the sun for a few days to allow the skins to form and then move them inside ideally somewhere with good airflow where they can continue to dry.