Lift tubers that will be harmed by frost, including Cannas
Lift and pot up tender perennials, to protect them over winter.
If you haven't already, take in any houseplants/conservatory plants that have outside.
Wrap fleece or straw around large tender perennials, such as banana plants.
Plant evergreen shrubs and conifer hedges while the soil is still warm.
Divide herbaceous perennials.
Plant spring-flowering bulbs
Remove pot saucers to prevent waterlogging over winter.
Collect seed from perennials.
This is a good time to take hardwood cuttings and cuttings of woody herbs such as rosemary (Salvia rosmarinus) and lemon verbena (Aloysia citrodora).
Slime moulds can often be seen in October, including the colourfully named dog sick slime mould