Multiplying Spring Onions

Available again in July 2026. Sign up below to go onto the waiting list.


Earth Chestnut (Bunium bulbocastanum)

Common names: Earth chestnut, pignut, great pignut and earthnut

The edible parts of the earth chestnut are its tubers, leaves and seeds. The tubers are small, nutty, and taste like chestnuts and can be eaten raw or cooked like potatoes. The leaves are edible and have a parsley-like flavor, while the seeds are also edible and can be used as a cumin substitute.

You will receive a seedling with roots and young shoots (see image further below). Simply plant into your garden as soon as you receive it and watch it emerge in spring. Growing tips are below.

Available again in July 2026. Sign up below to go onto the waiting list.

Smallanthus sonchifolius

Order is for 1 crown (see sample images below).

"Yacon" means "water root" in the Inca language and its tubers were historically highly valued as a wild source of thirst-quenching refreshment for travellers. It taste like a sweet cross between early apples and watermelon with a touch of pear.
The liquid can also be drawn off and concentrated to produce yacon syrup. The yacon is a species of perennial daisy traditionally grown in the northern and central Andes from Colombia to northern Argentina for its crisp, sweet-tasting, tuberous roots.

Available again in July 2026. Sign up below to go onto the waiting list.


Skirret (Sium sisarum)


Skirret was a reasonably well known plant in Europe from the middle ages into the 19th century. It has names in many different European languages and most of them appear to translate into some variation of “sugar root”. It can be prepared similarly to carrots. We love it simply fried in some butter. It is sweeter than carrots and beautifully creamy and soft when cooked.

You will receive a seedling with some storage roots and shoots (see image further below). Simply plant into your garden as soon as you receive it and watch it emerge in spring. Growing tips are below.

Available again in July 2026. Sign up below to go onto the waiting list.

Evergreen Comfrey (Symphytum grandiflorum)

Order is for 1 plant, bare rooted.

Growing tips are below.

This plant is very valuable in a food forest and organic garden system. Can be grown throughout New Zealand. Frost tolerant.

Due to its smaller size and more compact growth than regular comfrey it is ideal for smaller gardens, urban environments and small food forests. It makes an excellent border plant and ground cover and does well planted around fruit trees.

Available again in July 2026. Sign up below to go onto the waiting list.

Curcuma longa

Family: Zingiberaceae

Turmeric is one amazing plant with numerous health benefits. Here an extract: "An M.D. Anderson Cancer Centre review of curcumin research, in the journal Phytotherapy Research in 2014, found that it regulates inflammation that "plays a major role in most chronic illnesses, including neurodegenerative, cardiovascular, pulmonary, metabolic, autoimmune and neoplastic diseases."


Order is for 1 small crown.

Available again in July 2026. Sign up below to go onto the waiting list.

Peppermint (Mentha piperita)

This is a beautiful peppermint with a very "pepperminty" flavour. It is the one we grow commercially and not available in many shops. When we wander through the garden section of hardware stores the pots say "peppermint" on the label, but is more like a garden mint and not the true peppermint that we grow.
We ship it nationwide in their winter dormancy.

Frost tolerant.

They come bare rooted with some growing tips in place.

Small: enough for a 20cm wide planter/pot
Large: enough to fill 1 m² of garden bed.

Available again in July 2026. Sign up below to go onto the waiting list.


Rosmarinus officinalis

Available again in July 2026. Sign up below to go onto the waiting list.

Stachys affinis

The tubers have a distinct shape and look a bit like a grub. When eaten raw they are crisp and sweet like a water chestnut. When fried they are more starchy, soft and sweet, resembling a slightly nutty potato or kumara. In France they are known as crosnes and are typically served braised in herbs and butter, which is our preferred way to eat them. They are a great brain food.

Order is for a starter bag of about 5 tubers.

Growing instructions can be found below. Frost tolerant as they go dormant over winter.

Available again in July 2026. Sign up below to go onto the waiting list.

Meadow Arnica (Arnica chamissonis)

Common names: arnica, meadow arnica

Creeping alpine herbaceous perennial.

This plant have been grown organically at KoruKai Herb Farm, Banks Peninsula. Free from synthetic fertiliser, pesticides and herbicides.


You will get 3 dormant root pieces. Please find growing information and a picture below.

Available again in July 2026. Sign up below to go onto the waiting list.


Valerian (Valeriana officinalis)

Valerian is most commonly used for sleep disorders, especially the inability to sleep (insomnia).*

Order is for 1 plant. It will be a healthy crown cutting with a growing tip. Simply plant into your garden over winter and watch it emerge in spring. Growing tips are below.


This plant have been grown organically at KoruKai Herb Farm, Banks Peninsula. Free from synthetic fertiliser, pesticides and herbicides.

Available again in July 2026. Sign up below to go onto the waiting list.


Lovage (Levisticum officinale)

Lovage has long been cultivated in Europe, the leaves being used as a herb and soup ingredient, the roots as a vegetable, and the seeds as a spice, especially in southern European cuisine.

Dormant crown with growing bud/s. Simply plant into your garden as soon as you receive it and watch it emerge in spring. Growing tips are below.

Available again in July 2026. Sign up below to go onto the waiting list.

Helianthus tuberosus

Commonly called Jerusalem artichoke, sunchoke or sunroot. It is a type of sunflower. 

Jerusalem artichokes grown at KoruKai Herb Farm, Banks Peninsula. Free from synthetic fertiliser, pesticides and herbicides. 

Order is for 3 tubers. You can choose between 3 small or 3 large ones (please choose below).

Growing instructions can be found here and below.

Available again in July 2026. Sign up below to go onto the waiting list.

Artemisia dracunculus var. sativa

Family: Asteraceae

Aromatic and flavoursome herb, narrow green foliage with tiny yellow flowers in summer. Use fresh or dried. Delicious in hollandaise, bearnaise and tartar sauces.

Height in summer: 30-40cm

You will receive a dormant plant in its first year with visible shoots with no or very little leaves (plant is dormant in winter, see example photo below). It will emerge in spring and grow into a lush plant. Prune to create a bushy appearance. 

Growing instructions are below.

Please sign up below to get an email once they are available again (July 2026). 

Echinacea (echinacea purpurea) is a highly effective and safe immune herb that helps to jump-start the immune response in the body.*

These crowns are in their 2nd and 3rd year.

Growing tips are below.

Available again in July 2026. Sign up below to go onto the waiting list.


Russian Comfrey (Symphytum x uplandicum)

This plant is very valuable in a food forest and organic garden system.

The roots and leaves have many medicinal uses. It contains high levels of allantoin, making it a powerful cell proliferant internally and externally. It is used to knit wounds and damaged tissue.*

Order is for 1 plant. It will be a strong crown cutting with a growing tip.

Simply plant into your garden over winter and watch them emerge in spring. Growing tips are below.

Available again in July 2026. Sign up below to go onto the waiting list.


Lemon Balm (Melissa officinalis)

Family: Lamiaceae

Common names: Lemon Balm, Balm gentle

Lemon Balm is an easy-to-grow, highly medicinal and very yummy member of the mint family. It grows well in a range of different soil conditions and is very generous. We do 3-4 cuts of lemon balm every season.

Growing instructions, medicinal uses and herbal preparations are below.