Black Prince

Tomato

90d to harvest

Sink your spoon into the velvety, smoky-sweet allure of Black Prince—an heirloom-style beefsteak tomato with rich, wine-dark shoulders and a deep, rosy interior that tastes as lush as it looks. The flesh is meaty and juicy with a balanced, slightly tangy finish, ideal for showcasing in bold slices and thick wedges that hold their shape beautifully. Grow this 90-day standout for a dramatic harvest from late summer into early fall, where each fruit becomes a centerpiece-worthy centerpiece in the garden and the bowl.

Crop Dates

Milestone	Date
Start Indoors	Dec 22nd
Last Frost	Feb 9th
Transplant / Sow Outdoors	Apr 6th
Harvest Begins	Jul 5th
Harvest Ends	Dec 9th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Cage
Planting Depth	Deep
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Recommended Companions

Lemon Basil Basil

Taishan Yellow Marigold

Carson Hybrid Carrot

Pistou Basil Basil

Carrot Delight Carrot

Lemon Gem Marigold

Frequently Asked Questions

What causes leaf spots on Black Prince (eggplant) and how do I stop it?

Leaf spots are often caused by early blight/cercospora or other fungal leaf diseases that spread quickly in warm, humid conditions. Remove and discard any heavily spotted leaves, then spray the underside of foliage with a labeled fungicide for eggplant/leaf spot and improve airflow by spacing plants and watering at the soil line. Keep leaves as dry as possible—wet foliage and nighttime humidity are what drive new spots.

When is Black Prince eggplant ready to harvest?

Harvest when fruits are fully colored (deep purple-black with a glossy sheen) and reach about 6–8 inches long, typically around 80–90 days from transplanting. Pick fruit as soon as it’s the right size because eggplant becomes seedy and tougher when left on the plant too long. Use pruning shears to cut with a short stem, leaving the plant ready to set the next fruits.