Nasturtium: when to sow, plant and see it flower
Sowing, planting and flowering dates for your climate, with growing advice.
Photo: Tubifex, CC BY-SA 3.0 · image resized
When to sow and plant in your region
Average dates, computed from the frost dates of each climate. For your exact dates, choose your town.
| Climate | Sow under cover | Sow outdoors | Plant out | Flowering |
|---|---|---|---|---|
| South and east of England | 9 March – 21 April | 20 May – 21 June | 20 May – 17 June | 23 May – 3 November |
| South-west England and Wales | 26 February – 10 April | 22 May – 19 June | 22 May – 19 June | 12 May – 19 November |
| Midlands, northern England and Northern Ireland | 20 March – 2 May | 1 June – 2 July | 1 June – 29 June | 3 June – 28 October |
| Scotland | 30 March – 12 May | 13 June – 12 July | 13 June – 11 July | 13 June – 19 October |
| Ireland | 6 March – 18 April | 1 June – 29 June | 1 June – 29 June | 20 May – 10 November |
Growing
- Life cycle
- Annual (sown and in flower the same year)
- Family
- Tropaeolaceae
- Latin name
- Tropaeolum majus
- Cold tolerance
- Tender (killed by frost)
- Soil temperature to germinate
- 13 °C minimum
- Emergence
- 7–10 days
- Spacing
- 25–40 cm
Sources
- The Old Farmer's Almanac — Companion planting chart
- Gerbeaud — Légumes bons voisins : bonnes et mauvaises associations
- Garden Organic — Companion or mixed planting
- Jardiner Malin — Associations de légumes et fruits au potager
- Orto Da Coltivare — Orto sinergico: consociazioni e disposizione delle piante
- Orto Da Coltivare — Cosa piantare vicino ai pomodori
- Oregon State University Extension (news, 23 March 2018) — Practice the good neighbor policy in the garden
- RHS — Three ways to use companion planting
- University of Maryland Extension — Vegetable succession and companion planting
- NC State Extension Gardener Handbook — 10. Herbaceous Ornamentals
- RHS — Plant pages (hardiness ratings H1-H7)
- Jardiner Malin — flower and bulb fiches (same species; the lin, bleuet and lavatère pages are seed product pages, and lin is red flax)
- Gerbeaud — flower and bulb fiches (cosmos, souci, capucine, tournesol, alysse, zinnia, nigelle de Damas, coquelicot, pavot de Californie, pois de senteur, muflier, reine-marguerite, ipomée, mauve annuelle, annuelles rustiques, giroflée ravenelle, digitale, myosotis, pensée, rose trémière, pâquerette, lupin, ancolie, delphinium, échinacée, rudbeckia, gaillarde, achillée, tulipe, crocus, jacinthe, perce-neige, muscari, ail d'ornement, dahlia, glaïeul, lis, bulbes d'automne, profondeur de plantation)
- Royal Horticultural Society — growing guides (annuals and biennials: sowing in spring, sowing in autumn; sunflower, sweet pea, zinnia, lavatera, foxglove, lupin, hollyhock, delphinium, aquilegia, rudbeckia, achillea, tulip, daffodil, crocus, hyacinth, snowdrop, allium, dahlia, gladioli, lily, bulbs)
- The Old Farmer's Almanac — flower growing guides (cosmos, calendula, marigolds, nasturtiums, sunflowers, sweet alyssum, zinnias, sweet peas, snapdragons, morning glories, poppies, bachelor's buttons, foxglove, pansies, hollyhocks, lupines, columbine, delphiniums, coneflowers, black-eyed Susans, yarrow, dianthus, tulips, daffodils, crocuses, hyacinths, snowdrops, dahlias, gladiolus, lilies)
- Johnny's Selected Seeds — Flower Growing Guide and key growing information pages