Marathon broccoli is one of the widely used varieties in California for production in the cool weather season. It also performs well in the Northeast for a late summer and fall crop. The large, blue-green heads have high, smooth, tight domes and small, fine beads. Plants produce heavy heads and have intermediate resistance to downy mildew. Marathon is an excellent choice for bunching and the crown cut market. 75 Days to maturity.
Space 24 inches apart in rows 30 inches apart. Broccoli needs cool weather, full sun, water, and rich soil. Plant your broccoli where it will get least 6 hours of sun daily and has fertile, well-drained, moist soil with plenty of organic matter. Mulch will help keep the ground cool and moist. The soil pH should be between 6.0 and 7.0 for best growth and to discourage clubroot disease.