Potato Growing Guide

Potato Growing Guide

Introduction

Potatoes are a versatile addition to any meal, from bangers and mash to the classic Sunday roast. Boiled, baked, roasted, or as chips, they are a welcome crop to grow yourself. Whether you’re starting your first vegetable patch or adding new crops to an established allotment, this guide will help you grow potatoes successfully.

How long do potatoes take to grow?

Growth time depends on the type of potato:

  • First earlies – New potatoes for salads, ready in around 10–12 weeks. Varieties include Orla, Rocket, and Red Duke of York.
  • Second earlies – Take 14–16 weeks to mature. Varieties include Maris Peer and Charlotte.
  • Maincrops – Large potatoes ideal for baking, taking 16–22 weeks. Varieties include King Edward, Desiree, Maris Piper, and Pink Fir Apple.

Choose a type to start with, and later you can experiment with mixed planting. The type affects planting timing, spacing, and harvest.

When to plant your potatoes

  • First earlies – late March
  • Second earlies – early to mid-April
  • Maincrops – mid to late April

Adjust planting based on your UK location: cooler regions may plant later, milder regions earlier.

Growing potatoes: before you plant

Chitting potatoes

Start with virus-free 'seed' potatoes. Before planting, ‘chit’ them by placing in trays with the rose end upwards in a light frost-free space until shoots reach about 1 inch. For earlies, remove smaller shoots and leave four tubers per potato.

Where to plant your potatoes

Plant in rich soil with added compost, in an open sunny location. Early potatoes can grow in large pots or bags, making polytunnels an ideal environment. You can use staging or raised beds to maximise space and organise crops efficiently.

Spacing depends on type:

  • First earlies – 30cm apart, 12cm deep, rows 60cm apart
  • Second earlies – same as first earlies
  • Maincrops – 40cm apart, 12cm deep, rows 75cm apart

Harvest times

  • First earlies – June to July
  • Second earlies – July to August
  • Maincrops – late August to October

After harvest, prepare the soil for the next round of potatoes.

Get in touch

To choose the perfect polytunnel or staging for growing potatoes, browse our online shop. For questions, contact us on 01282 811250 or email info@premierpolytunnels.co.uk.

In this Article:

Growing through Spring

View All Spring Guides
View All Spring Guides

FRUIT & VEG

POLYTUNNEL YEARLY PLANNER

Use our polytunnel yearly planner yo help you decide what to grow in your polytunnel and when to sow, plant and harvest.