What to do in the garden in October? Lift Dahlia tubers, Begonia tubers and Gladioli corms to store dry over the winter months. Remove the dead foliage before storing them. Plant daffodil bulbs, tulip bulbs and allium bulbs for a glorious spring display. Dot them through borders or naturalise them in grass. Click here for more information on planting spring bulbs. Plant bare root ornamental trees and shrubs. Plant out any perennials or biennials you’ve grown from seed this year.