A colourful addition to the autumn and winter garden. The silvergrass 'Adagio' (Miscanthus sinensis) is a beautiful sight. The relatively low Miscanthus has grey-green leaves. And turn yellow in autumn. The large purplish-pink plumes turn creamy white later in autumn. The flower plumes bloom from late summer. And remain on the plant until winter. You can plant the silvergrass all year round. Except in frost.After the frost period, cut off faded flower plumes and discoloured leaves. Plant the…