How Long Potatoes Take to Grow
Knowing how long potatoes take to grow helps you plan planting, harvesting, and succession crops more effectively. Growth time varies by potato type, variety, and growing conditions, but all potatoes follow a similar development cycle from planting to harvest.
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⭐ 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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Average Growing Times for Potatoes
Potatoes are grouped by how long they take to mature.
- First early potatoes: 10–12 weeks from planting
- Second early potatoes: 13–15 weeks from planting
- Maincrop potatoes: 16–22 weeks from planting
Weather, soil temperature, and care can shorten or lengthen these times.
Growth Stages of Potato Plants
Potatoes develop in clear stages.
- Sprouting and early shoot growth
- Leaf and stem development
- Flowering and tuber initiation
- Tuber bulking
- Foliage dieback and maturity
Each stage influences final yield and harvest timing.
How Soil Temperature Affects Growth Time
Soil warmth plays a major role.
- Cold soil delays sprouting
- Warmer soil speeds early growth
- Frost damage can set plants back weeks
Planting into warming soil shortens growing time.
Do All Potato Varieties Grow at the Same Speed?
Growth speed varies by variety.
- Earlies grow faster but produce smaller crops
- Maincrop potatoes take longer but yield more
- Some varieties mature quicker within their group
Check variety-specific timings when planning harvests.
When Can You Start Harvesting Potatoes?
Harvest timing depends on the type grown.
- Earlies can be lifted once tubers reach usable size
- Second earlies need more time for bulking
- Maincrop potatoes are harvested after foliage dies back
Harvesting too early reduces yield.
How Growing Conditions Change Timing
Environmental factors influence growth length.
- Drought slows development
- Poor soil reduces growth speed
- Nutrient imbalances delay maturity
- Disease can shorten the season
Good care keeps plants on schedule.
Growing Potatoes in Containers or Bags
Containers can slightly affect timing.
- Soil warms faster in containers
- Growth may start earlier
- Watering must be more consistent
Container-grown potatoes can sometimes mature sooner.
Signs Potatoes Are Ready to Harvest
Visual cues help determine readiness.
- Flowering has finished
- Leaves yellow and die back
- Skins firm up when rubbed
These signs indicate maturity rather than exact dates.
Can Potatoes Be Left in the Ground Longer?
Timing flexibility depends on type.
- Earlies are best harvested promptly
- Maincrop potatoes can stay in the ground longer
- Wet soil increases risk of rot
Harvest timing should suit storage plans.
Final Thoughts
Potatoes typically take between 10 and 22 weeks to grow, depending on whether they are first earlies, second earlies, or maincrop varieties. Weather, soil conditions, and care all influence growth speed. By understanding the growth timeline and watching plant signals, you can harvest potatoes at the right time for the best yield and quality.