Nasturtium

Nasturtium: plant 30 cm (12 in) apart in the row and 30 cm (12 in) between rows, 1 per square. Good neighbours: Apple tree, Pear tree, Plum tree.

Key facts

Spacing in the row	30 cm (12 in)
Between rows	30 cm (12 in)
In a 30 cm (1 ft) square	1 per square
Sun	Full sun, 6–8 hours a day
Root depth	15 cm (6 in)
Height when grown	50 cm (20 in)
Crop rotation group	Herbs, flowers and perennials
Support	None needed

How it is started	Sown straight into the bed
Seeds per hole	3
Plants kept after thinning	1
Seeds per metre of row	10
Sowing depth	2 cm (0.8 in)
Soil temperature	from 13 °C, best 18–24 °C
Days to emerge	7–14 days
Light while germinating	Needs darkness, cover well
Before sowing	nothing needed
When to sow	Indoors 6 weeks before the last frost; outdoors after the last frost; soil at least 13 °C

Pricking out	sown where it grows
Takes transplanting	Badly, sow where it grows
Hardening off	7–10 days
Life cycle	Annual
Cold tolerance	Tender, hurt by frost
Soil	Light, sandy, free draining, pH 6–7.5
In a pot	5 L, 20 cm (7.9 in)
Watering	Water when the soil is dry two fingers down
Feeding	Little; at planting
Support and training	None needed; pinch the tips

◐ good with a condition · Why, with the sources →

Open the free planner, drop Nasturtium onto a bed and see how many plants fit.

Sow outdoors	May
Harvest	Jun–Oct

My country Last spring frost where I live

Give the date once and this page, the sowing calendar and the planner all follow it.

Months for a temperate climate: about a month later in the north and a month earlier in the south. Give your own last frost date for exact dates.

Crops that need about the same room and care, from another family.