How to Plant, Grow, and Care for ‘Black Krim’ Tomatoes
Look to ‘Black Krim,’ one of the earliest “black” tomato varieties, for an heirloom tomato rich in color and flavor. This strong performer yields hefty slicing tomatoes in rich rose and deep purple tones. Explore the heirloom qualities and how-to’s....

of ‘Black Krim’ with garden expert Katherine Rowe.
‘Black Krim’ tomatoes bring bold heirloom color, flavor, and performance to the slicing tomato. Depending on weather conditions, hefty fruits ripen to deep purple or dusky rose. The unique color, form, and flavor of this “black” tomato make the heirloom noteworthy in the garden.
These beautiful, beefsteak-sized fruits have dark flesh with deep, juicy interiors and a balanced, rich, sweet, and salty flavor. Let’s explore the heirloom traits and growing qualities of ‘Black Krim’ for an exciting twist on the summer slicer.
What are ‘Black Krim’Tomatoes?
This is an heirloom tomato variety with large, flavorful, beefsteak-type fruits. Its origin is as interesting as its color and form. ‘Black Krim’ is a selection in Krymsk, Russia, on the Black Sea across from the Crimean Peninsula. Synonyms include ‘Black Crimea.’
The first commercially available “black” tomato, Seed Savers Exchange introduced it in 1990 after receiving seeds initially from Crimea from Lars Olov Rosenstrom of Sweden. A few years later, the popular heirloom black tomato ‘Cherokee Purple’ came into cultivation.
Heirloom varieties span generations because of their flavor, growth, unique fruits, and performance qualities. This variety is notable for hefty, colorful fruits with a rich, slightly salty flavor.
Characteristics
This indeterminate tomato grows and produces fruits throughout the season until frost. It fruits reliably and productively, with meaty tomatoes that weigh 10 to 12 ounces each. The long, leafy vines that reach six feet or more.
In cool climates, the large fruits ripen to dusky rose and chocolate with green shoulders. They’ll turn deep purple-black in more sun and heat, but the sweet, salty flavor remains. The round fruits have squatty, flat tops.
‘Black Krim’ fruits late in the season, yielding mature tomatoes 70 to 90 days after transplanting into the garden. With its tall, continually growing vines, it needs a large tomato cage, stake, or trellis for support.
Native Area
Before ‘Black Krim’ grew near Russia and Ukraine, its wild ancestors hailed from faraway Central and South American coasts. Their original growing range is the narrow coastline below the Andes Mountains from Ecuador to Chile.
Tomato cultivation spread regionally through indigenous cultures and then through Spanish colonists returning to Europe with the fruits. A few centuries later, it became significant in culinary uses.
These are tender perennials in regions where they are hardy (USDA zones 10 and 11) and grow as warm-season annuals elsewhere. They belong to the Solanaceae, or nightshade, family, along with peppers, eggplants, and potatoes, among numerous other plants.
Planting
These plants are frost-sensitive and require warm air and soil temperatures for best growth. They grow easily from seed, with seedlings ready to move outdoors a week or two after the last frost and as nighttime temperatures are above 55°F (13°C). Growth takes off with warming summer temperatures.
When deciding where to plant, if possible, opt for a spot where you haven’t grown nightshades in the past year. Nightshades like tomatoes, potatoes, peppers, tomatillos, and eggplants transmit diseases among the group. Crop rotation helps prevent the spread of any lingering fungus or bacteria in the soil.
Plant seedlings two to three feet apart to provide ample air circulation between plants. If growing in rows, space the rows three to four feet apart.
Plant tomato seedlings deep, leaving a third of the stem exposed (or two sets of leaves) with the rest buried. The covered leaf nodes and hairs grow roots to aid plant stability and nutrient uptake. At planting, install the upright support structure like a large tomato cage.
How to Grow
This large tomato grows best with certain cultural needs fulfilled. However, it’s also an adaptable variety that withstands less-than-ideal conditions. ‘Black Krim’ is a productive and reliable fruiter.
Maintenance
In addition to meeting basic cultural requirements, an important step is mulching, which helps with moisture retention, weed suppression, and soil temperature regulation. Clean, weed-free straw, compost, leaf mold, or aged woodchips do the job.
Pruning is unnecessary, but as large, indeterminate plants, they benefit from pinching off low-growing, suckering offshoots to direct nutrients and growth to the upper parts of the plant.
To increase air circulation at the base of plants, some gardeners find it helpful to pinch off the lower six to ten inches of growth along stems. Do this when plants reach two feet tall.
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