Nasturtium Growing Guide

Tropaeolum

Crop Rotation Group

Miscellaneous ●

Soil

Any sunny site with good drainage.

Position

Full sun to partial afternoon shade.

Frost tolerant

Nasturtiums may survive very light frosts, but they are easily damaged by freezing temperatures.

Feeding

Mix a light application of a balanced organic fertiliser into the soil prior to planting.

Spacing

Single Plants: 30cm (11") each way (minimum)
Rows: 30cm (11") with 30cm (11") row gap (minimum)

Sow and Plant

Soaking seeds in water overnight prior to planting may speed germination, but nasturtium seeds sprout best when the soil is warm. Poke seeds into the soil about 1 inch (3 cm) deep and 3 inches (8 cm) apart. Thin to 12 inches (30 cm) apart in all directions.
Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area.

Notes

Nasturtium blossoms, leaves and immature green seed pods are edible.

Harvesting

Gather nasturtium blossoms in the morning, when they are plumped up with moisture. Snip away the base of each blossom, which may taste bitter.

Planting and Harvesting Calendar

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Pests which Affect Nasturtium

Aphids (General)

Slug

Snail