Blue Potato

Potato

90d to harvest

Velvety, slate-blue skin gives way to a vivid, electric-blue interior that’s as striking as it is satisfying—an eye-catching harvest that turns every basket into a keepsake. Blue Potato forms sturdy, medium-to-large tubers with a smooth, well-set shape and a firm, creamy bite when cooked, making it ideal for roasting, mashing, and strikingly colorful sides and spreads. Grow it for the drama: deep color, dependable performance, and a distinctive look that elevates any table.

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 20th
Transplant / Sow Outdoors	Apr 20th
Harvest Begins	Jul 19th
Harvest Ends	Oct 20th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Clumping
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	55
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	Not Required

Recommended Companions

Capture Cabbage

Purly Chives

Moonsong Deep Orange Marigold

Vorbote 3 Cabbage

Lemon Gem Marigold

Common Chives Chives

Frequently Asked Questions

What should I do if my blue potato plants get late blight or leaf spot?

Late blight often starts as irregular, water-soaked spots with a grayish growth on leaf undersides, spreading fast in cool, wet weather. Remove and discard infected leaves (don’t compost), improve airflow by spacing plants well, and if the problem is active apply a labeled potato fungicide early and repeat according to the label—especially after rainy periods. Leaf spot is usually more localized; prune off affected foliage and avoid wetting leaves when watering.

How can I tell when blue potatoes are ready to harvest?

Harvest “new” potatoes at about 60 days, but for full maturity wait around 90 days when plants start yellowing and dying back. Gently dig one hill first—ready potatoes have skins that won’t rub off easily and tubers feel firm and well-sized for the variety. Harvest on a dry day, cure them (keep in a cool, dark place) for about 7–10 days before storage.