Potato Growing Timeline: From Planting to Harvest

Understanding the potato growing timeline helps you know exactly what to expect at each stage of growth, from planting seed potatoes to harvesting a full crop. While timing varies slightly by variety and weather, this guide covers a typical UK potato growing season.

⭐ Recommended Products — Seed Potatoes & Planting Essentials

• Seed Potato Collection (Early, First & Second Earlies)
A mixed pack of quality seed potatoes to plant for a steady harvest from early summer through to autumn. Ideal if you want variety in size and maturity times.
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• Certified Seed Potatoes (Single Variety Packs)
Choose popular individual varieties (e.g., Maris Piper, Charlotte, King Edward) to suit your taste and growing goals — consistent results from true seed stock.
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• Potato Grow Bags / Containers
Reusable, breathable bags designed specifically for growing potatoes — great for patios, small gardens, or increasing yield in limited space.
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• Potato Fertiliser / Soil Booster
Specially formulated feed to support healthy tuber development and improve yields — apply at planting or as a top-dress during the season.
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• Potato Planting Guides & Markers
Helpful tools and guides that take you through planting depth, spacing, and care — plus reusable markers to keep track of different varieties.
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Stage 1: Chitting Seed Potatoes (January–March)

Optional but recommended, especially for early potatoes

Chitting encourages quicker, stronger growth once planted.

• Place seed potatoes in a light, frost-free place
• Allow short, sturdy shoots to develop
• Takes around 4–6 weeks

Maincrop potatoes can be planted without chitting if preferred.

Stage 2: Planting Potatoes (March–April)

Potatoes are planted once soil temperatures reach 7–10°C.

• Early potatoes: Late February to March (under cover or mild areas)
• Maincrop potatoes: Late March to mid-April

Plant seed potatoes:

• 10–15cm deep
• With shoots facing upwards
• Spaced correctly for the variety

Stage 3: Sprouting and Emergence (2–4 Weeks After Planting)

Shoots begin to break through the soil surface.

• Growth may be slow in cool weather
• Frost protection may be needed early in the season

Once shoots appear, regular care begins.

Stage 4: Earthing Up (April–May)

As plants grow, soil is mounded around stems.

• First earth-up when shoots reach 15–20cm
• Repeat as plants grow taller

Earthing up:

• Protects tubers from light
• Prevents greening
• Supports strong growth

Stage 5: Rapid Leaf Growth (May–June)

Plants produce strong leafy growth.

• Photosynthesis fuels tuber formation
• Regular watering becomes important
• Avoid high-nitrogen feeds

Healthy foliage at this stage is vital for good yields.

Stage 6: Flowering and Tuber Formation (June–July)

Flowers appear on many varieties.

• Flowering signals tuber development underground
• Potatoes need consistent moisture now
• Drought stress reduces yields

Not all potato varieties flower — this is normal.

Stage 7: Early Potato Harvest (June–July)

First early potatoes are ready around:

• 10–12 weeks after planting

Harvest when:

• Plants are flowering
• Tubers are a usable size

These potatoes are best eaten fresh.

Stage 8: Second Early Harvest (July–August)

Second early potatoes mature around:

• 12–14 weeks after planting

They can be harvested as needed or lifted all at once.

Stage 9: Foliage Dieback (August–September)

Maincrop potato plants begin to yellow and die back naturally.

• This signals tubers have reached maturity
• Stop watering
• Leave tubers in the ground for 1–2 weeks

This allows skins to thicken for storage.

Stage 10: Maincrop Harvest (September–October)

Maincrop potatoes are ready to lift when:

• Foliage has fully died back
• Skins are firm and do not rub off easily

Harvest on a dry day if possible.

Stage 11: Drying and Curing (After Harvest)

Before storage:

• Dry potatoes for 24–72 hours
• Cure maincrop potatoes for 10–14 days
• Store in dark, well-ventilated conditions

This improves storage life significantly.

Stage 12: Storage (Autumn–Spring)

Store potatoes:

• At 4–8°C
• In darkness
• In breathable containers

Properly stored maincrop potatoes can last 4–6 months.

Final Thoughts

From planting to harvest, potatoes take anywhere from 10 to 20 weeks depending on the variety. By understanding each stage of the potato growing timeline, you can provide the right care at the right time and enjoy reliable harvests year after year.

Patience, consistency, and timing are the keys to successful potato growing.