Three-cornered Leek

Since we grow this plant from bulbs (not seeds), autumn is the ideal time for planting. Plant the bulbs in the soil during September, October, or November. The correct planting depth is 5 to 10 centimeters. We supply customers with the largest bulbs (size 5/+), which will reliably sprout for you in the spring.

Three-cornered leek (Allium triquetrum) is a beautiful perennial that combines the qualities of an ornamental plant and an excellent culinary herb. You will be particularly drawn to its triangular stems, from which it gets its name, and its pure white flowers with a characteristic green stripe. It grows to a height of 30 to 40 cm and is ideal even for complete beginners, as it requires no complex care.

If you receive the bulbs before you are ready to plant them, store them in a cool, dark, and well-ventilated place (for example, in a paper bag in a cellar or garage). This will prevent them from sprouting prematurely or, conversely, from drying out or developing mold due to excessive moisture.

The most common risk is confusion with the white-flowered bluebell, which is not edible and could cause health issues. However, you can safely identify our garlic by two signs: 1) the stems have a triangular cross-section, while the bluebell has a round stem, 2) after rubbing the leaves between your fingers, you will smell a typical, strong garlic aroma.

You can look forward to a flood of pure white flowers during May and June. Furthermore, the flowers strongly attract bees and other pollinators, so by planting it, you will support biodiversity in your garden. The aromatic flowers are bell-shaped and decorated with an unmistakable green stripe.

Allium triquetrum is fully frost-hardy, falls into zone 7a, and easily withstands temperatures down to -18 °C. You definitely do not need to dig up the bulbs for the winter; they will safely overwinter directly in the flowerbed. Although the plant has no winter effect (the above-ground part is not visible during the winter), it waits safely underground for spring.

The flowers are absolutely ideal for cutting for spring bouquets; they look beautiful in a vase and stay fresh for a long time. Just keep in mind that they will have a subtle garlic aroma. However, this plant is not suitable for drying, as it would lose both its shape and color.

In a suitable moist location, Three-cornered leek will naturally and nicely spread over time. The best way to propagate it is by carefully digging up and dividing older clumps of bulbs during the dormant period (preferably in autumn).

One of the greatest advantages of this plant is that it is completely edible. You can safely consume the flat green leaves, the triangular stems, and the flowers themselves. All parts have a pleasant garlic aroma. It is excellent in fresh spring salads, spreads, or for making homemade pesto.

We have great news for you! Three-cornered leek is an extremely resilient plant that does not suffer from any common diseases and is avoided by garden pests. Thanks to its essential oils, it acts more like a natural repellent for unwelcome guests in the garden bed.

It thrives best in sun or partial shade. It loves conditions similar to the popular wild garlic, so the ideal soil is moist, humus-rich, and well-drained loamy soil. If you provide it with enough moisture and nutrients, it will reward you with lush growth and abundant flowering.

This problem most often arises when bulbs are planted in soil that is too heavy and impermeable, where water sits during the winter. The solution is to remove the bulbs (if they are not yet completely destroyed), lighten the soil with sand or compost, create a drainage layer, and replant at the correct depth of 5 to 10 cm.