How to Grow Nasturtiums

June 19, 2026

How to Grow Nasturtiums 

Origins:

Nasturtium (Tropaeolum majus) is a fast-growing flowering plant native to the Andes region of South America, particularly Peru, Bolivia, and Colombia. It was introduced to Europe in the 16th century by Spanish explorers and quickly became popular as both an ornamental and edible plant. Its vibrant flowers range from yellow and orange to deep red, while its rounded leaves and trailing habit make it a striking addition to gardens and food forests alike.

How to Grow:

Nasturtium is an easy-to-grow annual that thrives in full sun to partial shade and prefers well-drained soil. Interestingly, it flowers best in relatively poor soils, as overly fertile ground encourages leafy growth at the expense of blooms. Seeds can be sown directly into the garden after the last frost and typically germinate within 7–14 days. Once established, nasturtiums are drought tolerant and require minimal maintenance, making them ideal for beginner gardeners and low-input growing systems.

Culinary Uses:

One of the most versatile edible flowers, nasturtium offers a peppery flavour similar to watercress or rocket. The leaves, flowers, and immature seed pods are all edible. Leaves can be added to salads, sandwiches, and pestos, while the brightly coloured flowers make an attractive garnish for both savoury and sweet dishes. The green seed pods are often pickled and used as a substitute for capers. Rich in vitamin C and other antioxidants, nasturtium adds both flavour and nutrition to the kitchen garden.

Medicinal Uses:

Traditionally, nasturtium has been valued for its antimicrobial and immune-supporting properties. The leaves and flowers contain compounds such as glucosinolates, which have natural antibacterial and antifungal effects. Herbalists have used nasturtium preparations to support respiratory health, assist with mild urinary tract infections, and help combat seasonal colds. It is also a source of vitamin C, contributing to overall immune function. While generally safe as a food plant, medicinal use should complement rather than replace professional medical advice.

Permaculture Uses:

Nasturtium is highly regarded in permaculture systems due to its multiple functions. It serves as an excellent living groundcover, helping to suppress weeds, reduce soil moisture loss, and protect soil from erosion. The flowers attract bees, hoverflies, and other beneficial pollinators, while the plant can also act as a trap crop for aphids and caterpillars, drawing pests away from more valuable crops. Its sprawling growth makes it useful beneath fruit trees and around vegetable beds, where it contributes beauty, biodiversity, food production, and natural pest management all from a single plant.

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