From flowering onwards the plant generally develops a trailing habit. Stems may show anthocyanin pigmentation. Leaves are pinnate ending in a very small tendril. Flowers are white with blue veins and there are generally 3 per peduncle. Pods are bivalve, rhomboid and 2-seeded.
Seeds are biconvex with a uniform red testa colour without marbling or speckling.
Cotyledon colour is orange. Relative time of flowering is subject to environmental variation. Plant height at maturity is slightly shorter than Aldinga but maturity is several days earlier. Under some conditions Northfield is less likely to lodge at maturity than other varieties making harvesting easier. Indications are shattering tolerance is similar to Aldinga and Kye.