January is a key month for planning, planting, and pruning in Southern California gardens. Some tasks include taking inventory of existing plants and purchasing replacements, ordering seeds, planting trees and perennials, pruning deciduous plants, and dividing grasses. Flowers like currants and manzanitas are highlighted this month, and pests like snails should be monitored. Enjoying the early signs of spring by observing birds and seedlings is also recommended.