Chelidonium majus 'Flore Pleno' is a double-flowered form of Chelidonium in the poppy family Papaveraceae. It produces yellow blooms in the UK from April to July. The foliage is blue-green and pinnate, and the plant behaves as a 

Chelidonium majus 'Flore Pleno' belongs to the poppy family Papaveraceae and represents a double‑flowered form within the genus Chelidonium. It is a perennial herbaceous plant originating from temperate parts of Europe and western Asia and is cultivated where a long spring–early summer flowering period is wanted. Plants carry clear yellow flowers from April to July in the UK, set against blue‑green pinnate leaves; the floral display is concentrated in late spring and early summer. Reproduction in the species involves small, black seeds contained in a long, cylindrical capsule, each seed bearing an elaiosome that attracts ants and encourages dispersal (myrmecochory), which can aid local naturalisation. Uses in the garden are typically informal: 'Flore Pleno' fits with mixed herbaceous borders and naturalistic plantings where its spring–summer flowers can sit alongside other perennials. Expect the double form to emphasise petalled blooms in season, while the seed capsules and ant‑assisted dispersal contribute to its behaviour in a planting over time. The small black seeds borne in the elongated capsules have elaiosomes that ants collect, helping seedlings appear a short distance from the parent clump.

Chelidonium majus 'Flore Pleno' is a double-flowered form of Chelidonium in the poppy family Papaveraceae. It produces yellow blooms in the UK from April to July. The foliage is blue-green and pinnate, and the plant behaves as a perennial herbaceous species.

Chelidonium majus 'Flore Pleno' produces double yellow flowers in the UK from April to July and has blue‑green pinnate leaves.

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