Nasturtium Tom Thumb

Tropaeolum majus 'Tom Thumb' Dwarf Nasturtium 'Tom Thumb'

Compact dwarf mounds of cottage cottage-bright flowers in scarlet red, vivid orange and sunshine yellow, sitting like little flags above rounded shield-shaped fresh-green leaves — Nasturtium 'Tom Thumb' is the dwarf bushy garden classic that combines easy beginner-friendly growing, exceptional companion-planting value for vegetable gardens, and 100% edible peppery-tasting flowers and leaves in a single packet.

Unlike trailing or climbing Nasturtiums that scramble vigorously, 'Tom Thumb' is the compact dwarf form — a tidy bushy mound just 25–30cm tall that stays put exactly where planted. The flowers are the classic Nasturtium trumpet form in vivid scarlet, electric orange and sunshine yellow, held high above the characteristic rounded shield-shaped leaves on slender stems. This is the Nasturtium for window boxes, patio containers, kitchen-garden edging and any position where space matters. Hardy annual, completing its full cycle in a single year, but self-seeds reliably — once you've grown Tom Thumb successfully, volunteer seedlings appear in subsequent years.

Triple value plant: 'Tom Thumb' is simultaneously a beautiful ornamental, an exceptional companion plant for vegetable gardens (the pungent foliage confuses aphids and whitefly while serving as a "trap crop" drawing blackfly away from beans, courgettes and brassicas), AND a 100% edible plant — leaves, flowers, seed pods all edible with a distinctive peppery watercress flavour. The seed pods can even be pickled as "poor man's capers".

A note on growing

Genuinely one of the easiest plants in any seed catalogue. Direct sow outdoors from late April through June (after frost risk), or indoors in modules from February–April. Sow at 1.5cm depth — Nasturtium seeds are large and don't need light to germinate. Germination 7–14 days. Plant out or thin to 25cm spacing.

The single critical rule for Nasturtiums: do not feed. In rich nitrogen-fed soil, Nasturtiums produce magnificent lush foliage and few flowers — a classic "all leaf no flower" failure. In poor lean ground, they flower prolifically. Avoid manured ground, avoid fertiliser, plant in average to poor soil for maximum flower production. Full sun, though Tom Thumb tolerates partial shade better than some Nasturtium varieties.

Where it shines

In window boxes, patio containers and hanging baskets, where the compact 25–30cm habit suits the limited space and the cheerful colour mix provides reliable summer display. In the kitchen garden as the indispensable companion plant — plant a ring around the base of tomatoes, courgettes, climbing beans or brassicas, and the pungent foliage works as natural aphid/whitefly deterrent while attracting beneficial pollinators. Along path edges, where the low bushy form softens hard lines. In children's gardens, where the large easy-to-handle seeds, rapid germination, edible flowers and bright colour make every sowing a celebration.

Plant alongside

For container partnerships, combine 'Tom Thumb' with the dwarf Calendula 'Oopsy Daisy' — both are dwarf, compact, edible-flowered and pollinator-friendly, creating a professional-looking productive window box display. With Alyssum 'Carpet of Snow' for the classic edible-edible cottage container trio where Alyssum's white provides cool visual contrast to the warm Nasturtium colours. For kitchen-garden companion planting, plant with Borage (similar bee value and edible flowers) and Calendula 'Art Shades Mixed' for a complete edible pollinator support team.