A beautiful sight. The silvergrass' Gracillimus' (Miscanthus sinensis) is appreciated for its beautiful growing form. The graceful leaf hangs down in an arc. The Miscanthus has green leaves with a white midrib. And turn yellow in autumn. The 'Gracillimus' does not always flower. When it does bloom, the silvergrass blooms with pink flower plumes. The flower plumes bloom in the autumn. 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 plant in a nice spot in partial shade or full sun. Water it more during dry periods.

If you buy perennials in autumn they might not look quite as beautiful as usual, because autumn is when they lose their leaves. The big benefit of planting perennials in autumn is that by spring they will be well rooted in the garden and ready to burst into growth.