Save 20% with our Bedding Bonus Bonanza! These Polyanthus High Seas Plug Plants are for our 1st Delivery Window and will be despatched from 30th July until the 19th August 2018. Save £15.20 when you buy 680 Polyanthus High Seas Plug Plants. A great deal if you have a big garden or want to club together with your neighbours!Grow the best of British! This traditional English Polyanthus features a bright and cheerful range of colours.