The deep pink buds of 'Horizon Monarch' open into huge  gorgeous flowers which are pink on the outside and pale yellow on the inside and up to 10cm across during spring, contrasting beautifully with the glossy dark green leaves which can reach 18cm in length. Grown as a standard, this is a superb specimen plant for a large container and also perfect for the dappled shade of a woodland border where the huge, stunning flowers shine out against the glorious foliage. Fully deserving its coveted RHS Award of Garden Merit, you can be sure that this is a proven garden performer, guaranteed to be suitable for UK gardeners at every level of experience. You can therefore plant this in the garden with confidence, for stunning displays for many years to come. Supplied as an established plant in a 19cm pot, ready to plant out.