Dark Purple Beefsteak Tomatoes Seeds | Black Krim Tomato, Black Brandywine Tomato, Cherokee Purple Tomato for Planting

Dark Purple Beefsteak Tomato Seeds for Planting – Non-GMO Heirloom Seeds – Black Krim, Black Brandywine & Cherokee Purple (Solanum lycopersicum) offer a premium collection of three richly flavored, dark-colored slicing tomatoes. Black Krim produces deep reddish-brown fruits with olive-green shoulders and a bold, smoky flavor. Black Brandywine develops large, flattened mahogany fruits with dense, juicy flesh and an intense, fruity tomato taste. Cherokee Purple produces dusky purple-pink tomatoes with dark shoulders, tender flesh, and a rich, sweet, old-fashioned flavor. Together, these heirloom varieties provide an attractive range of dark purple, mahogany, burgundy, brown, and green tones for home gardens, farmers’ markets, and specialty culinary displays.

Black Krim commonly produces 8–16-ounce fruits and is known for dependable yields and a complex smoky flavor. Black Brandywine develops approximately 12–16-ounce, slightly flattened beefsteak tomatoes with rich mahogany coloring. Cherokee Purple generally produces flattened, 8–12-ounce fruits with dusky pink skin, dark shoulders, and multicolored interiors that may display purple, brown, red, and green tones. All three varieties have an indeterminate growth habit, meaning the vines continue growing, flowering, and setting fruit throughout the season until frost or unfavorable weather stops production.

These large, juicy tomatoes are excellent for fresh slicing, sandwiches, burgers, salads, tomato toast, Caprese dishes, salsa, sauces, soups, roasting, and colorful platters. Their tender texture and exceptional flavor are best enjoyed fresh from the garden. Because heirloom beefsteak tomatoes may be softer and more delicate than commercial varieties, handle ripe fruits carefully to avoid bruising or cracking.

Planting Season

Best planted in: Spring & Early Summer (Warm-Season Crop)

Start seeds indoors approximately 6–8 weeks before the last expected spring frost. Tomato seedlings require warm conditions and should not be transplanted outdoors until all danger of frost has passed, the soil has warmed, and nighttime temperatures consistently remain above approximately 52°F (11°C). Soil temperatures should be at least 55–60°F (13–16°C) before transplanting.

Black Krim, Black Brandywine, and Cherokee Purple grow best when daytime temperatures remain between approximately 65–85°F (18–29°C). Extended temperatures above 95°F (35°C) may slow growth, interfere with pollination, and reduce fruit production. Cold weather can stunt young plants, while even a light frost may kill unprotected tomato vines.

In regions with short growing seasons, start seeds indoors early and choose a warm, protected garden location. In hot climates, plant early enough for flowering and initial fruit set to occur before the most extreme summer heat. Tomatoes may also be planted for a fall crop in warm regions where sufficient frost-free growing time remains.

How to Grow Dark Purple Beefsteak Tomato Seeds

Start the seeds indoors in cell trays, seed-starting pots, or small containers filled with a clean, moist seed-starting mix. Sow seeds approximately ⅛–¼ inch deep and cover them lightly with fine soil or growing medium.

Maintain soil temperatures between approximately 75–90°F (24–32°C) for the fastest and most consistent germination. Tomato seeds can germinate across a broader range of approximately 60–95°F (16–35°C), but cool soil significantly delays emergence.

Keep the seed-starting mix evenly moist but not waterlogged. Covering the trays with a clear humidity dome can help retain moisture until the seedlings emerge, but remove the cover promptly after germination to improve airflow.

Seeds typically germinate within approximately 6–12 days under favorable conditions. Provide strong light immediately after emergence. Place seedlings under grow lights for approximately 14–16 hours daily or position them in the brightest available window, rotating the containers regularly to encourage upright growth.

When the seedlings develop their first true leaves, transplant them into larger individual pots if necessary. Plant them slightly deeper than they were growing previously, as tomato stems can produce additional roots along buried sections.

Begin hardening seedlings approximately 7–10 days before transplanting. Gradually expose them to outdoor sunlight, wind, and temperature changes, starting with a short period in a protected location and increasing their outdoor time each day.

Choose a planting location that receives at least 6–8 hours of direct sunlight daily. Full sun supports vigorous growth, strong flowering, improved fruit color, and better flavor. Black Krim fruits may develop darker shoulders when exposed to increased heat and sunlight.

Plant in fertile, loose, well-drained soil with good air and water movement. A slightly acidic soil pH between approximately 5.8 and 6.8 is suitable for healthy growth. Amend the planting area with finished compost or well-aged organic matter before transplanting.

Dig a deep planting hole and remove the lowest leaves from each seedling. Set the transplant deeply so that a substantial portion of the stem is below the soil surface, leaving only the upper sets of leaves exposed. Tall or leggy seedlings may be planted horizontally in a shallow trench, with the upper stem gently curved upward. Buried tomato stems develop additional roots, helping establish a stronger root system.

Space plants approximately 24–36 inches apart, with rows approximately 4–6 feet apart. These three indeterminate beefsteak varieties develop large vines and need sufficient room for sunlight penetration, air circulation, harvesting, and disease prevention. Trellised plants may be placed approximately 24 inches apart, while plants grown in large cages generally benefit from wider spacing.

Install sturdy tomato cages, stakes, or trellises at transplanting time before the roots spread through the surrounding soil. Black Krim, Black Brandywine, and Cherokee Purple produce heavy fruits that can bend or break unsupported branches. Keeping vines and fruits above the ground also improves airflow, simplifies harvesting, and reduces the risk of fruit rot.

Container growing is possible when using large pots with excellent drainage. Select a container with a capacity of at least 10–15 gallons for each plant, although larger containers provide more consistent moisture and greater root space. Grow only one plant per container and provide a strong cage or trellis capable of supporting mature vines and heavy fruit.

Mix compost or aged organic matter into the soil before planting. Avoid adding excessive fresh manure or high-nitrogen fertilizer, which may encourage vigorous leafy growth while delaying flowering and fruit production.

How to Care for Dark Purple Beefsteak Tomato Plants

Water deeply and consistently throughout the growing season. Aim to keep the soil evenly moist without allowing it to remain saturated. Irregular watering, particularly cycles of severe dryness followed by heavy irrigation, can contribute to fruit cracking and blossom-end rot.

Water at the base of the plants using drip irrigation or a soaker hose whenever possible. Avoid frequently wetting the leaves, especially late in the day, because prolonged leaf moisture can encourage fungal and bacterial diseases.

After the soil has warmed, apply a 2–3-inch layer of organic mulch around the plants. Clean straw, shredded leaves, untreated grass clippings, or finished compost can help conserve soil moisture, moderate soil temperature, suppress weeds, and prevent soil from splashing onto the lower leaves.

Keep mulch a few inches away from the main stems to prevent excess moisture from collecting around the plant bases. Remove weeds carefully because they compete with tomato plants for moisture, nutrients, sunlight, and growing space.

Feed plants with a balanced vegetable or tomato fertilizer after transplanting. Once flowering and fruit formation begin, use a fertilizer formulated for tomatoes with moderate nitrogen and adequate phosphorus and potassium. Excessive nitrogen may produce large, dark green vines with fewer flowers and fruits.

Tie vines loosely to stakes or trellises as they grow. Use soft garden ties, cloth strips, or flexible supports that will not cut into expanding stems. Check the supports regularly because branches carrying large beefsteak tomatoes can become extremely heavy.

Prune damaged, yellowing, or diseased lower leaves to improve airflow and reduce contact between foliage and soil. Indeterminate plants may also be lightly pruned by removing selected suckers, particularly below the first flower cluster. Avoid excessive pruning, as the leaves protect developing fruits from sunscald and provide energy for growth.

Monitor regularly for aphids, whiteflies, flea beetles, spider mites, tomato hornworms, fruitworms, stink bugs, and cutworms. Remove large caterpillars by hand when practical, inspect the undersides of leaves, and keep the planting area free from weeds and decaying plant material.

Common tomato diseases and disorders include early blight, late blight, Septoria leaf spot, bacterial spot, Fusarium wilt, Verticillium wilt, blossom-end rot, cracking, and sunscald. Heirloom varieties may not carry the same disease-resistance traits found in many modern hybrids. Proper spacing, trellising, crop rotation, clean tools, soil-level watering, and prompt removal of unhealthy foliage help reduce disease pressure.

Avoid growing tomatoes, peppers, eggplants, or potatoes repeatedly in the same location. Rotating nightshade-family crops helps reduce the buildup of soilborne pests and diseases.

Black Krim is typically ready for harvest approximately 75–85 days after transplanting. Fruits are mature when they develop deep reddish-brown or purple coloring, dark green-to-brown shoulders, and a slight softness when gently pressed. The shoulders may remain green even when the lower portion of the fruit is fully ripe.

Black Brandywine generally matures approximately 80–90 days after transplanting. Harvest when the large, flattened fruits develop a rich mahogany or dark burgundy color and yield slightly to gentle pressure. Mature fruits commonly weigh approximately 12–16 ounces, although size may vary with climate, fertility, and growing conditions.

Cherokee Purple usually begins ripening approximately 72–90 days after transplanting. The fruits are ready when the skin changes to a dusky purple-pink color, the shoulders darken, and the flesh becomes slightly soft while remaining firm enough to handle. Because the shoulders may retain green or brown tones, judge maturity by the overall color, aroma, and texture rather than waiting for a completely uniform appearance.

Harvest fruits by gently twisting them from the vine or cutting their stems with clean pruning shears. Pick regularly to reduce the weight on branches and encourage the plants to continue producing.

For the richest flavor, allow fruits to ripen on the vine whenever weather and pest conditions permit. However, tomatoes may be harvested at the breaker stage—when the first visible color appears—and allowed to finish ripening indoors if heavy rain, extreme heat, frost, cracking, or animal damage is expected.

Store uncut ripe tomatoes at room temperature away from direct sunlight. Avoid refrigerating fresh tomatoes unless they are fully ripe and need to be held longer, as cold temperatures may reduce their flavor and alter their texture. Use soft, fully ripe heirloom tomatoes promptly because their delicate skins and tender flesh do not generally store or ship as well as firm commercial varieties.

Check stored tomatoes daily and remove any fruits showing leakage, mold, or damaged areas. Fully ripe fruits are best consumed within several days. For longer preservation, the tomatoes may be frozen, roasted, cooked into sauce, canned using an approved safe recipe, or dehydrated.

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