Vigorous & Decorativewater Hyacinths Are Vigorous & Decorative Plants With Distinctive Flower Spikes In Early Summer That Give The Plants Their Common Name.floating Plants shade The Pond & Reduce Algae While Providing Valuable Cover For Pond Life. These Plants Float On Top Of The Water.from 3rd August 2016 The European Commission Have Listed Eichornia Crassipes ‘major’ (Water Hyacinth) As Being An Invasive Species. We Are Allowed To Supply This Plant & Are Happy To Do So For The Next 12 Months During The Transitional Period Of Agreement. Eichornia Is A Tender annual & Whilst It May Be Invasive In Warmer European Climates, Here In All Parts Of The Uk The Plant Will Die During Our Winters So Can Not Be Invasive. eichornia Crassipes ‘major’ Is A Beautiful Ornamental Plant For Ponds, Attracting Pollinating Insects To The Garden. The Decision Was Fought By Uk Horticultural Bodies To Not Be Registered Invasive In Our Country, However Please Act Responsibly, Enjoy This Plant In Your Garden, Do Not Take This Plant With You Outside Of The Uk, Which Could Be An Offence. flowers july-augustspread 25cm/10inheight 60cm/24in