What a fascinating plant Lupinus is; at least, that’s what I’ve always thought. Whether I see them in the wild or at the garden centre, they always bring a smile to my face. For this feature, I took a deep dive into this plant, and I must say, my fascination has only grown.
Lupinus, wolf in sheep’s clothing
The name Lupinus is derived from the Latin word lupus, meaning “wolf.” The name dates back to the 14th century and has two possible explanations. One is the belief at the time that the plant would deplete the soil (the opposite is true!). The plant was viewed as ravenous, like a wolf.
Another, more likely explanation is that the toxic Lupinus was as dangerous for sheep as a wolf.
Unique soil improver
Lupine has remarkable roots that collaborate with a specific type of bacteria living in the soil. These bacteria are attracted by chemical signals from the roots, and once they reach the roots, nodules form. From that moment, the plant gains a superpower: it can draw extra nitrogen from the air and convert it into nutrients. The bacteria benefit as well, receiving sugars from the plant.
This Rhizobium–root nodule symbiosis benefits everyone as it extracts nitrogen from the environment and improves soil quality.
Toxic or a healthy delicacy?
Lupinus contains alkaloids, natural chemical compounds. When consumed in large quantities, these are harmful to humans and animals.
However, Lupinus is eaten by humans, specifically varieties like Lupinus angustifolius and Lupinus albus, which are very low in alkaloids. The seeds are cooked and fermented to remove all harmful substances. Properly prepared lupin seeds are highly nutritious and healthy. They are rich in proteins, fibre, and healthy fats.
They can be eaten as a snack, like olives, or added to salads or soup.
Do these healthy nutrients remind you of legumes? That’s correct! Lupinus belongs to the legume family.
New: Lupinus Lupinova
A new Lupinus series has hit the market. The plants are naturally compact and bloom without “vernalisation,” meaning they don’t need a cold period to stimulate flowering. As a result, regardless of the conditions, the plant will produce many flowers. The flower stems are very strong, and the plant is highly frost-resistant. Lupinus Lupinova is a series that truly stands out.
The season is expected to start in mid-May, but availability may still be somewhat limited.
Care tips
Lupinus is an easy garden plant. They tolerate drought well and only need watering during prolonged dry periods.
There’s no need to fertilise them, as they create their own nutrients (see: Unique soil improver).
What they don’t like is wet soil and chalky ground.
Give them a sunny spot
Remove spent flower stems
Remember this:
Lupinus is one of the few plants that can extract nitrogen from the air and turn it into nutrients (so they don’t need fertilisers).
Lupinus enriches the soil and boosts biodiversity.
Beans from non-toxic varieties are edible and make excellent meat substitutes.
Lupinus leaves shade the ground, preventing weeds from growing.
The striking flower spikes come in beautiful colours.
