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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.
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.
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.
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.
Amaranthus Love Lies Bleeding
Popular for floral work, the cascading red tassels are a striking addition to large bou
Beetroot Bulls Blood
An American heirloom that produces beautiful vibrant red, globe-shaped roots. A versati
Borage
Borage is grown mostly for its bright blue edible flower and is an excellent bee plant
Briza Quaking Grass
Ornamental grass with graceful paper lantern-like flower heads that are white, tinged w
Buckwheat Pink
Pink buckwheat, known for its striking flowers and nutritious seeds, serves not only as
Cabbage Chinese Mini Gold F1
Fast growing, mini Kimchi cabbage with a golden yellow interior and a sweet, crunchy fl
Cabbage Verona Purple Savoy
Popular European savoy cabbage with a purple blush to its leaves that's enhanced with c
Calendula Nova
Considered among gardeners as one of the easiest and most versatile flowers to grow in
Carrot Nagai
Super long heirloom carrot from Japan, can grow to over 60cm yet still be sweet and cri
Cauliflower Giant of Naples
Impressive cauliflower for gardeners with space. With a curd size of 1.6 to 1.8kg, the
Chilli Habanero Yellow
Breathtakingly hot chilli with a Scoville rating of 100,000-350,000. Sturdy one-metre t
Cleome Mix
Also known as spider flowers, featuring scented, spidery blooms atop sturdy stems, addi
Coriander Picante
A very popular herb for culinary use, all parts of the plant are edible, but the fresh
Corn Salad Verte de Cambrai
Also known as lambs lettuce or mache, it deserves wider recognition as an ideal substit
Cress American Upland
A peppery herb very similar to watercress but much easier to grow. The plant yields dar
Cucumber Crystal Apple
Apple-size cucumber with sweet taste and crisp juicy flesh that can be eaten thin skin
Cucumber Homemade Pickles
Bred for pickling, these medium-green cucumbers have crisp flesh and excellent flavour.
Echium Blue Bedder
This fabulous bee plant can play a vital role in your garden ecosystem by attracting po
Eggplant Florence Round Purple
A beautiful and unusual eggplant with oblong to round fruits in shades of rich lavender
Gypsophila Virgo
Delicate stems and myriads of white, double blossoms add a delightful airy grace to any
Helichrysum Swiss Giants
A classic mix of double-flowered, everlasting flowers in the full colour range. Harvest
Hollyhock Summer Carnival Mix
A mix of frilly, brightly coloured flowers in shades of pink, crimson, violet, yellow a
Kale Noble
Known for its remarkable resilience and fast growth, a gentle frost not only enhances i
Larkspur Summer Sun Double Mix
Vibrant, mixed colours on towering stems. An easy-to-grow cut flower, fantastic both fr
Leek Lungo della Riviera
Tall and slender gourmet Mediterranean leek that's great for tasty and tender baby leek
Lettuce Little Caesar
A dark-green, mini cos that is grown for cos hearts or small leaves for making salads.
Lettuce Tom Thumb
An English Heirloom that combines taste and space-saving. Ideal for small gardens and c
Lupin Russell Mix
Magnificent in the border garden or naturalised in a cottage garden setting. The flower
Marigold Starfire Mix
A cheerful mix of miniature-flowered marigolds in variations of red, orange and gold. G
Marigold Sugar & Spice
Attractive mix which includes white, yellow, gold and orange flowers. Gorgeous double-p
Melon Topaz F1
Sweet and juicy, yellow Canary melon with firm orange flesh. When ripe, the skin colour
Mizuna Red Kingdom F1
Finely serrated mustard with dark purple leaves and dark veins at babyleaf size (21 day
Mustard Gai Choy
Possibly the most common mustard greens used in Chinese cuisine, served as a side dish
Nigella Love in a Mist
Mixed colours, star-shaped blooms surrounded by delicate fern-like foliage, referred to
Onion Yellow Sweet Spanish
A large golden-brown skinned onion with a mild, sweet flavour. Produces uniform globe-s
Organic Basil Red Opal
A beautiful ornamental, as well as culinary Basil which has a very sweet anise-like fra
Organic Basil Sweet Genovese
A staple herb for home gardeners and our most popular basil for a reason - reliable, ar
Organic Bean Runner Cobra
High quality dark green stringless runner bean with 20cm long round pods that are crisp
Organic Beet Erbette
Selection of perpetual spinach, with a thinner stem and light-green leaf. An excellent
Organic Broccoli Raab Spring Rapini
Italian specialty, no central head but many tasty leaves and side shoots with green flo
Organic Broccoli Waltham
Waltham broccoli is a long-standing heirloom variety, with origins da
Organic Cucumber Marketmore
Slicing cucumber with crisp, cylindrical fruit averaging 15cm. Suitable for growing up
Organic Lettuce Parris Island Cos
A must to grow for Caesar salad fans since 1865. The upright plant has a tight 20-25cm
Organic Mallow Mauritiana
This Mallow is a tall plant resembling its distant cousin the Hollyhock and has triangu
Organic Rocket
Equally good on its own or in a salad, rocket has a distinctive slightly bitter and pep
Parsley Gigante Italian
Widely cultivated, flat-leaf parsley such as this is often preferred by chefs and cooks
Pea Greenfeast
Well known and very popular dwarf green pea for the home gardener. Growing to waist hei
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