Rosa 'Electron', also known as Mullard Jubilee, is a bright pink hybrid tea rose developed by Samuel McGredy IV in 1962.

The large, high-centered, cup-shaped petals are generally borne singly on long stems.

[1][2] The Sam McGredy family represents four generations of rose hybridizers from Northern Ireland.

Originally the head gardener at a large estate, in 1888, McGredy moved his family to Portadown, leased 10 acres with a greenhouse and established a nursery with his son, Samuel II (1861–1926).

The nursery's rose-breeding program declined after McGredy's early death of a heart attack at the age of 38 and the beginning of the Second World War.

[5][6] When Samuel McGredy IV (Sam) (1931–2019) took over the family business in 1952, he knew very little about rose breeding.

He sought out the renowned rose hybridizers at the time: Reimer Kordes from Germany, Eugene Boerner from the United States and Niels Poulsen from Denmark, in order to educate himself on modern rose hybridization.

[6] In 1972, alarmed over the increasing political violence in Northern Ireland, McGredy and his family moved to Auckland, New Zealand.

New Zealand's climate, ideal for plant cultivation, allowed McGredy to breed roses outdoors without greenhouses.

The new electric pink rose was chosen to bear the Mullard name and was introduced in Europe as 'Mullard Jubilee' in 1970.

Both 'Paddy McGredy' and 'Prima Ballerina' give a high percentage of seedlings with mildew, so it is a wonder 'Mullard Jubilee' is so healthy.