Understanding Potato Growth Types
Potatoes are classified as determinate or indeterminate based on their growth habit. Knowing which type you’re planting helps determine spacing, planting depth, hilling needs, and harvest timing.
Quick Tips
- Not all potatoes grow the same—planting depth and hilling depend on the type.
- Determinate potatoes produce one main layer of tubers.
- Indeterminate potatoes produce multiple layers when hilled properly.
Determinate Potatoes
Determinate potatoes have a more predictable growth cycle and form most of their tubers in a single layer near the seed piece.
Growth Characteristics
- Grow to a predetermined size
- Tubers form in one primary layer
- Shorter growing season (70–90 days)
- Plants stop growing once flowering begins
Planting Tips
- Plant shallowly
- Minimal hilling required
- Ideal for containers and small garden spaces
Harvest
- Ready all at once
- Best for single-harvest situations
Common Determinate Varieties
- Dakota Pearl – Smooth white skin, excellent storage
- Yukon Gold – Golden skin, creamy flesh, very versatile
- Pontiac – Red skin, white flesh, early maturity
- Russet Norkotah – Smooth russet skin, fluffy white flesh
Indeterminate Potatoes
Indeterminate potatoes continue growing as long as conditions are favorable and can form multiple layers of tubers along the stem.
Growth Characteristics
- Longer growing season (90–120+ days)
- Tubers form in layers when hilled
- Continued growth throughout the season
Planting Tips
- Require regular hilling or deep planting
- Well suited for potato towers, bags, and deep beds
- Can be harvested in stages
Harvest
- New potatoes can be harvested early
- Full harvest once vines die back
Common Indeterminate Varieties
- Kennebec – Thin tan skin, excellent for frying and baking
- La Soda – Red skin, moist flesh, performs well in warm climates