First Earlies, Second Earlies, Maincrop: What’s the Difference?
When choosing potatoes to grow, one of the most confusing things for gardeners is the terminology: first earlies, second earlies, and maincrop. These labels aren’t about size or flavour — they describe how long potatoes take to grow, when they’re harvested, and what they’re best used for.
Understanding the difference helps you:
⭐ Recommended Products — Garden & Allotment Essentials for March
March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.
Seed Trays, Modules & Propagation Kits — perfect for tomatoes, brassicas, lettuce, onions and flowers. 👉
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Heated Propagators, Heat Mats & Grow Lights — improves germination and prevents leggy seedlings during cold nights. 👉
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Seed & Cutting Compost — essential for healthy seedlings and strong root growth. 👉
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Garden Fleece & Plant Protection Covers — protects seedlings, potatoes and early plantings from late frost. 👉
Click here to see top options
Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉
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Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉
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Pressure Washer (Greenhouse & Patio Cleaning) — clean patios, paths and greenhouses before planting. 👉
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Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉
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- Plan your planting calendar
- Maximise harvests from limited space
- Avoid blight and pest issues
- Grow potatoes that suit how you actually cook and eat them
This guide breaks down each type clearly, explains how they compare, and helps you choose the right potatoes for your garden or allotment.
⭐ Recommended Potato-Growing Tools & Supplies (Matched to Potato Types)
Different potato types benefit from slightly different tools and setups. These basics improve results across all three groups.
• Seed Potato Chitting Tray or Egg Boxes
Encourages strong, early shoots — especially important for first and second earlies to get them off to a fast start.
👉 Click here to see top options
• Potato Grow Bags or Deep Containers
Ideal for first and second earlies, which mature quickly and don’t need as much root space as maincrop varieties.
👉 Click here to see top options
• Garden Fork (Not a Spade)
Essential for harvesting all potato types without slicing through tubers, particularly maincrop varieties that grow deeper.
👉 Click here to see top options
• Garden Fleece or Frost Protection
Useful for protecting early growth on first earlies planted before the last frost date.
👉 Click here to see top options
Why Potatoes Are Split into Three Types
Potatoes are grouped by maturity time, not variety quality.
The three categories reflect:
- Speed from planting to harvest
- Typical planting and lifting months
- How long they store
- Best culinary uses
This system helps gardeners stagger harvests and grow potatoes across the whole season.
First Early Potatoes: The Quickest Crop
What Are First Earlies?
First earlies are the fastest-growing potatoes, producing new potatoes in around 10–12 weeks from planting.
They’re grown primarily for:
- Early harvests
- Fresh eating
- Tender skins and delicate flavour
When to Plant First Earlies (UK)
- Late February to March (under protection or in mild areas)
- Often planted first after chitting
Because they grow early, they often avoid the worst of potato blight.
When to Harvest First Earlies
- June to early July
- Harvest when plants flower or shortly after
They are best eaten immediately — storage life is very short.
Characteristics of First Earlies
- Small to medium tubers
- Thin skins
- Waxy texture
- Mild, fresh flavour
Best Uses
- Boiling
- Steaming
- Salads
- Light roasting
They are not suitable for long-term storage.
Second Early Potatoes: The Middle Ground
What Are Second Earlies?
Second earlies mature slightly later than first earlies, taking around 13–15 weeks to harvest.
They offer:
- A balance between speed and yield
- Slightly larger potatoes
- More versatility in the kitchen
When to Plant Second Earlies
- March to early April
- About 2–3 weeks after first earlies
When to Harvest Second Earlies
- July to August
- Lift once foliage starts to yellow
They store better than first earlies but are still mainly for fresh use.
Characteristics of Second Earlies
- Medium-sized tubers
- Thicker skins than first earlies
- Waxy to slightly floury texture
Best Uses
- Boiling
- Roasting
- General-purpose cooking
- Summer meals
Second earlies are often the most flexible potatoes for home growers.
Maincrop Potatoes: The Heavy Lifters
What Are Maincrop Potatoes?
Maincrop potatoes take the longest to grow — around 18–22 weeks — but reward patience with large harvests and excellent storage potential.
They are the backbone of winter potato supplies.
When to Plant Maincrop Potatoes
- April
- After the risk of prolonged frost has reduced
When to Harvest Maincrop Potatoes
- September to October
- After foliage has fully died back
Maincrop potatoes must be cured and dried before storage.
Characteristics of Maincrop Potatoes
- Large tubers
- Thick skins
- Floury or all-round textures
- High yields
Best Uses
- Roasting
- Baking
- Mashing
- Chips
- Long-term storage
Most maincrop varieties store for several months in cool, dark conditions.
Side-by-Side Comparison
First Earlies
- Harvest: June–July
- Time to maturity: 10–12 weeks
- Storage: Poor
- Best for: New potatoes, salads
Second Earlies
- Harvest: July–August
- Time to maturity: 13–15 weeks
- Storage: Short-term
- Best for: Versatile summer cooking
Maincrop
- Harvest: September–October
- Time to maturity: 18–22 weeks
- Storage: Excellent
- Best for: Winter use and bulk harvests
Which Potato Type Should You Grow?
Grow First Earlies If:
- You want the earliest harvest possible
- You have limited space
- You want to avoid blight
- You love fresh new potatoes
Grow Second Earlies If:
- You want flexibility
- You prefer medium-sized crops
- You want a longer harvest window
Grow Maincrop If:
- You want large yields
- You want potatoes for winter storage
- You cook lots of roasts, mash, and baked potatoes
Many gardeners grow all three to spread harvests across the year.
Do Earlies and Maincrop Taste Different?
Yes — largely due to texture.
- Earlies are usually waxy and moist
- Maincrop varieties are often floury or all-round
- Second earlies sit between the two
Taste differences are subtle, but texture strongly affects cooking results.
How Blight Affects Each Type
Potato blight thrives later in summer.
- First earlies often escape blight entirely
- Second earlies may be affected in wet years
- Maincrop are most at risk
This is why many gardeners rely on earlies for reliable crops.
Common Mistakes When Choosing Potato Types
❌ Expecting earlies to store like maincrop
❌ Planting all potatoes at the same time
❌ Growing maincrop in shallow containers
❌ Harvesting too early or too late
❌ Ignoring blight timing
Matching potato type to purpose avoids disappointment.
Can You Mix Types in the Same Bed?
Yes — but plan spacing carefully.
- Earlies can be harvested first, freeing space
- Maincrop continue growing longer
- Label rows clearly to avoid confusion
This method maximises yield from one bed.
Final Thoughts
First earlies, second earlies, and maincrop potatoes each serve a different role — and none are “better” than the others. The key difference lies in speed, harvest time, yield, and storage, not quality.
By understanding these categories, you can grow potatoes that suit your space, your cooking habits, and your seasonal needs — whether that’s enjoying early new potatoes in June or pulling a sack of maincrop potatoes from storage in January.