🥔 Potato 'Maris Piper'

Sowing window (UK)	March to April
Minimum soil temperature	7°C at seed depth
Sowing depth	12 cm
Spacing	75 cm apart
Days to germination	14 days
Days to harvest	130 days
Sowing method	Direct sow outdoors
Frost hardy	No
Sun	full-sun
Watering	moderate
Plant family	Solanaceae

When should I sow Potato 'Maris Piper' in the UK?

In the UK, sow Potato 'Maris Piper' from March to April. It is normally sown direct outdoors. Wait until the soil has reached 7°C at seed depth rather than going by the calendar - potato will sit and rot in cold ground.

What soil temperature does Potato 'Maris Piper' need to germinate?

Potato 'Maris Piper' needs a minimum soil temperature of 7°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 Potato 'Maris Piper'?

For Potato 'Maris Piper', sow it 12cm deep and space plants 75cm apart.

How long does Potato 'Maris Piper' take to grow?

Potato 'Maris Piper' takes roughly 130 days from sowing to harvest. Seed usually germinates in about 14 days.

Is Potato 'Maris Piper' frost hardy?

No. Potato 'Maris Piper' 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.