🫚 Yacon

Sowing window (UK)	April to May
Minimum soil temperature	10°C at seed depth
Sowing depth	5 cm
Spacing	90 cm apart
Days to germination	14 days
Days to harvest	240 days
Sowing method	Start under cover, transplant out
Frost hardy	No
Sun	full-sun
Watering	moderate
Plant family	Asteraceae

When should I sow Yacon in the UK?

In the UK, sow Yacon from April to May. It is normally started under cover and transplanted. Wait until the soil has reached 10°C at seed depth rather than going by the calendar - yacon will sit and rot in cold ground.

What soil temperature does Yacon need to germinate?

Yacon needs a minimum soil temperature of 10°C at seed depth to germinate reliably. Below that, germination is slow and patchy, and seed is more likely to rot than sprout. Measure at around 5cm down, in the morning, rather than trusting air temperature.

How deep and how far apart should I sow Yacon?

For Yacon, sow it 5cm deep and space plants 90cm apart.

How long does Yacon take to grow?

Yacon takes roughly 240 days from sowing to harvest. Seed usually germinates in about 14 days.

Is Yacon frost hardy?

No. Yacon is not frost hardy. Do not put it outside until the risk of frost has passed in your area, and be ready to fleece it if a late frost is forecast.

Sowing data cross-checked against RHS growing guides and UK seed-merchant catalogues. Soil temperatures are the minimum for reliable germination, measured at seed depth.