Challenge

Black walnuts have a particular, aromatic flavour which is very different from the common walnut.

The Chilean trumpet flower is the national flower of Chile and produces abundant and graceful red flowers.

Chinese liquorice resembles the ordinary liquorice, but plays an important role in Chinese medicine as one of the 50 basic herbs.

The tallest living tree on earth, with the highest individual reaching up to 115,5 m in height.

A carnivorous plant with leaves in the shape of the head of a cobra. Insects can after entering the trap no longer escape and are digested in a bath of enzymes and bacteria.

Beautiful, hardy tree with flowers which hang down just like a handkerchief. The flowers are white and have irregular leaves. 

The most massive tree on earth, with a thick red/brown bark to protect them from forest fires. The heaviest individual currently weighs around 2000 tons.

A tree fern from the moist forests of New Zealand which remains smaller compared to the related Tasmanian tree fern. Without protection it can overwinter at a minimum of –5 degC.

Liquorice is harvested as roots from this small, hardy shrub from western Asia. After three years, the first roots can be harvested.

A self-pollinating, compact, delicious kiwi with high yields in a temperate garden. The smooth skin of the kiwi can be eaten, directly from the plant. 

The biggest bamboo outside the tropics, which can grow up to a height of 28 meters. The bamboo is hardy and can be grown in the garden.

Hardy species with fruits that can weigh up to 500 grams and are rich in protein and vitamins. The pulp is white and tastes like banana or mango. 

This species is hardy up to -10 degrees Celsius, and originates to the shady, moist forests in southern Australia. 

This tree fern originates from the humid cloud forests and along rivers in Tasmania. Without protection it can withstand a minimum of –5 degrees Celsius.