Brandywine Black produces deep maroon tomatoes. This variety is an heirloom tomato from the 1800s with great flavor and matures in about 100 days. When the tomatoes are very large, they can display cracking, and they may need staking since they are indeterminate.
How to Grow Brandywine Tomatoes from Seed
# 1 | Start tomatoes indoors 6-8 weeks before the last frost of spring, sow your tomatoes seeds in a flat 1/4" deep and 1" apart. Keep the temperature near 70-75 degrees F until germination. Make sure you provide bright light but not direct sun. Keep the planting soil moist, but make sure drainage is adequate.
# 2 | Your Black Brandywine Heirloom Tomato seeds will germinate in 10-20 days. When the second set of leaves emerge, transplant your brandywine tomatoes seedlings into individual pots; bury the stems up to the lowest set of leaves to make sure your tomatoes grow strong roots.
# 3 | A week before planting your Brandywine tomato seedlings outside, begin exposing them to the weather during the day to harden them off. Tomatoes cannot endure cold weather, so make sure you do not transplant outside until all threat of frost has passed.
# 4 | When the soil temperature reaches at least 70 degrees F, plant the seedlings in full sun and very rich soil; once more, bury the entire stem up to the lowest set of leaves. If providing a trellis, space the plants 2' apart, but if allowing the vines to spread, space the plants 3-4' apart.