Black Prince is a good tomato. It is prolific and tasty with a classic "black tomato" flavor. Black Prince "Black" slicing tomatoes are not actually black, but ranging in colors from deep purple, dark mahogany, and even brownish-blue. The dark range of colors appears to be encouraged by a higher acid and mineral content in the soil or higher temperatures.
Tomato fertilizers work well for chili pepper plants, as do compost and well-rotted manure. A good 5-10-10 fertilizer is usually sufficient for peppers. Work it into the soil before transplanting, about 3 pounds per 100 square feet.
Grows well in fertile, moist, but well-drained soil that's high in organic matter. Trillium can be grown in clay soils, if amended with peat moss and compost. Spacing: Space the small rhizomes (roots) about 6- to 12-inches apart and about 2- to 4-inches deep.
Early season pepper plant pruning shouldn't be done until the plant is at least a foot (31 cm.) tall and can be stopped once fruit have set. Most pepper plants have an overall 'Y' shape and branches then create smaller and smaller Y's off of the main stems. By the time the plant is a foot (31 cm.)
Those seedlings may look small now, but a full-grown tomato plant needs a lot of space for a strong root system. For maximum production, the ideal pot size is 18-inch diameter for determinate tomatoes and 24-inch diameter for indeterminate tomatoes.