This grower is sure of this plant identification.
Ferula communis. 2nd year plants. £3.50. Very limited number. healthy and vigorous. Message me if interested
Ferula communis (Giant fennel). They are usually found in the Mediterranean region, they are tall robust perennials about 4.5m high, with narrowly lobed leaves and leaf stalks that sheath the stems. The 5- petalled yellow flowers will appear in the early summer. The plants may take several years to flower.
Can be found on road-sides or waste ground.