Black Krim is a heirloom beefsteak tomato originating from the Crimean Peninsula on the Black Sea coast, renowned for its deep purple-brown fruits and distinctive smoky, sweet, and salty flavor profile. Seeds germinate readily in warm conditions (65-90°F, optimally 75°F), typically emerging within 5-14 days with high germination rates around 85%. This moderately easy-to-grow variety requires consistent soil warmth and moisture during germination for best results.
Before sowing
No pre-treatment needed — sow directly.
Sowing
What to expect
Tips
Maintain soil temperature consistently at 70-85°F using a heat mat if necessary for rapid, uniform germination. Sow seeds 1/8 to 1/4 inch deep in sterile, soilless seed-starting mix to prevent fungal damping-off and seed rot. Keep soil evenly moist like a wrung-out sponge without saturating; avoid overwatering. Once seedlings emerge, provide immediate bright light (16-18 hours daily under grow lights) and reduce temperature to 60-70°F to promote stocky growth. Thin seedlings to one per cell after emergence and transplant into larger pots when first true leaves appear. Start seeds indoors 6-8 weeks before the last frost date to avoid leggy, root-bound transplants. Ensure good air circulation with a gentle fan to prevent fungal diseases. Harden off seedlings gradually over 7-10 days before planting outdoors after all frost danger has passed and nighttime temperatures consistently exceed 50°F.
Sources: Pinetree Garden Seeds, Epic Gardening, PlotMyGarden, Baker Creek Seeds, High Mowing Seeds, ResearchGate, ARCC Journals, Michigan Heirlooms, Wikipedia, Specialty Produce, Tasting Table, Minneopa Orchards, Tomato Bible, Gardeners' Magazine, Grokipedia, Plantura
