Red Giant Beefsteak Tomato Seeds

Start Beefsteak Tomato seeds indoors 7–9 weeks before your last frost date, but not earlier, or you'll have overgrown, root-bound seedlings by transplant time. Sow beefsteak seeds ¼ inch deep in a quality seed-starting mix, one or two seeds per cell. Keep soil temperature between 65–85°F and you'll see sprouts in 7–10 days. A heat mat under the tray can help if your space runs cool. Once seedlings hit 3–4 inches and nighttime temps stay reliably above 50°F, they're ready to go outside.

Bush Beefsteak Tomato seeds require full sun, as least 8 hours per day, because shaded plants produce leafy vines and small fruit. These large red tomato seeds grow well in loose, well-draining sandy loam with a pH between 6.2-6.8; heavy clay will waterlog roots and lead to rot. Make sure to consistently water plants, as irregular wet-dry cycles cause blossom rot and cracking. Mulch around the base to hold moisture and keep soil temperature stable. 

Space that Beefsteak Giant Tomato seeds or plants 18–24 inches apart with 36 inches between rows — that spacing provides good airflow and you don’t have to bother about fungal problems. These are tall vines, 6–8 feet at maturity, so cage or stake early before the plant gets ahead of you. Pinch suckers growing in the crotch between stem and branch to direct energy toward fruit rather than foliage. Feed monthly with a balanced or slightly phosphorus-heavy fertilizer once flowering starts. Harvest regularly — fruit left on the vine past peak ripeness slows the next set.