Tendersweet. Superior in both taste and texture, Sweetcorn Swift F1 is quicker to germinate and has better vigour than other varieties. Produces 2-3, 18cm (7in) cobs per plant, each with 16-18 rows of bright yellow tender sweet kernels. Flavour guide: rich and sugar-sweet. Sweetcorn Extra Tender & Sweet F1 has long lasting flavour and is easy to grow. Isolation from other sweetcorn varieties not required.