Golden Acre Cabbage Seeds Heirloom Vegetable. An early Copenhagen type producing solid, round heads on small compact plants. This is the earliest maturing cabbage we offer. Heads weigh about 2 kg (4.4 lbs) and grow to about 15-17 cm (6-6.5″) in diameter. Tolerates closer spacing than many cabbages, possesses superb bolting resistance and is an excellent choice for poorer soils.