SproutSmart
SproutSmart Intelligent Garden Sowing

Purple Majesty

Potato

Planting Schedule

Add Purple Majesty to your garden to build a schedule and get reminders.
Botanical illustration of Purple Majesty
90d to harvest

Velvety skins in Purple Majesty arrive at maturity in a rich, inky blue-purple that feels almost satin under the fingers, with a strikingly colored interior that turns deep violet when cooked. The flesh is satisfyingly firm yet tender, holding its shape beautifully for roasting and pan-frying, while its vivid color makes show-stopping mash and creamy soups. Grow Purple Majesty for a dramatic harvest you’ll want to serve often—its color is the star, from first harvest to the last spoonful.

Crop Dates

Growing note: Frost-free Zone 10a supports continuous outdoor production.
MilestoneDate
ClimateFrost-Free Climate
Growing ApproachContinuous Production

Crop Details

TraitValue
Days to Maturity90
Sun RequirementsFull SunFull sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)55
Min Soil Temp (°F)45
Min Night Temp (°F)35
Harden Off (days)Not Required

Frequently Asked Questions


What pest or disease commonly affects Solanum tuberosum (Purple Majesty) and what should I do?
Late blight (often appearing as dark, water-soaked leaf spots that spread quickly) is a major risk for potatoes, especially in humid weather. Start by removing infected leaves or plants immediately, then spray with a labeled fungicide that contains chlorothalonil or mancozeb early in the outbreak window and repeat as directed on the label. Also improve airflow by avoiding crowding and watering the soil (not the foliage) to slow disease spread.
How often should I water Purple Majesty potatoes during the main growing phase?
During active tuber bulking (roughly from when plants are flowering until about 3–4 weeks before harvest), keep soil evenly moist but not waterlogged. Water deeply about 1–2 times per week depending on weather, aiming for about 1 inch (2–3 cm) of water total weekly; sandy soils may need more frequent watering while heavy soils need less. If the top few inches dry out completely, bump the watering, but avoid standing water to prevent tuber rots.
Botanical illustration of Purple Majesty

Velvety skins in Purple Majesty arrive at maturity in a rich, inky blue-purple that feels almost satin under the fingers, with a strikingly colored interior that turns deep violet when cooked. The flesh is satisfyingly firm yet tender, holding its shape beautifully for roasting and pan-frying, while its vivid color makes show-stopping mash and creamy soups. Grow Purple Majesty for a dramatic harvest you’ll want to serve often—its color is the star, from first harvest to the last spoonful.