Onion Seeds (Allium cepa)

Onion Seeds (Allium cepa)

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Onion Borettana

Onion Borettana

Small Italian onions called Cipollini. Produces granex (flattened-round) shaped bulbs w

200 seeds | SKU: V8212
NZ $3.00
NZ $3.00
heirloom
pickling

Onion Borettana

Kings Seeds Vegetables Onion Italian Long Keeper

Onion Italian Long Keeper

Very large bulbs, the biggest ones about twice the size of a Pukekohe Long Keeper. Prod

500 seeds | SKU: V8213
NZ $4.00
NZ $4.00
Best Seller
heirloom
long-shelf-life

Onion Italian Long Keeper

Onion Pearl Drop

Onion Pearl Drop

Pure white cocktail onion for bunching or pickling. Extra early, beginning to mature 75

500 seeds | SKU: V8214
NZ $4.00
NZ $4.00 NZ $0.00
bunching
heirloom
pickling

Onion Pearl Drop

Onion Pukekohe Long Keeper

Onion Pukekohe Long Keeper

Market standard variety, popular for the home garden and commercially. Reliably produce

300 seeds | SKU: V8375
NZ $3.00
NZ $3.00
heirloom
professional

Onion Pukekohe Long Keeper

Onion Purplette

Onion Purplette

Tasty specialty onions mature early and can be harvested very young as baby bunching on

100 seeds | SKU: V8215
NZ $4.00
NZ $4.00
bunching
mini-vegetable
open-pollinated

Onion Purplette

Onion Red Brunswick

Onion Red Brunswick

A long day onion variety that produces medium-large, dark-red bulbs with a mildly punge

500 seeds | SKU: V8216.pkt
NZ $4.00
NZ $4.00 NZ $0.00
heirloom
long-shelf-life

Onion Red Brunswick

Onion White Sweet Spanish

Onion White Sweet Spanish

A mild onion, not really for storage due to few skins so best enjoyed fresh. The white,

250 seeds | SKU: V8217
NZ $4.00
NZ $4.00
long-shelf-life
open-pollinated

Onion White Sweet Spanish

Onion Yellow Sweet Spanish

Onion Yellow Sweet Spanish

A large golden-brown skinned onion with a mild, sweet flavour. Produces uniform globe-s

250 seeds | SKU: V8218
NZ $4.00
NZ $4.00
heirloom
salad-vegetable

Onion Yellow Sweet Spanish

Organic Onion Florentine Red

Organic Onion Florentine Red

Long, torpedo-shaped red onion with mild sweet flavour. Oblong bulbs make uniform slice

500 seeds | SKU: O6047
NZ $4.00
NZ $4.00
certified-organic
cool-growing
heirloom
salad-vegetable

Organic Onion Florentine Red

Organic Onion Red Amposta

Organic Onion Red Amposta

Italian heirloom red onion that reliably produces medium-size, globe-shaped bulbs with

300 seeds | SKU: O6048.pkt
NZ $4.00
NZ $4.00
Best Seller
certified-organic
cool-growing
heirloom
salad-vegetable

Organic Onion Red Amposta

Kings Seeds Organic Organic Onion Walla Walla

Organic Onion Walla Walla

Highly regarded large, white onion so sweet it can reputedly be eaten like an apple! A

100 seeds | SKU: O6050.pkt
NZ $4.00
NZ $4.00
certified-organic
cool-growing
heirloom
salad-vegetable

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.