Pinch Seedlings of Annuals
Keep an eye out on the progress of annual seedlings growing indoors. If they become too spindly, consider pinching back the growing tips to encourage branching and make them more compact.
Nearly all perennials like a boost just as their new growth starts to emerge. Topdress the soil with nutritious organic matter such as compost or add natural slow-release fertilizers. These foods will last longest and are less likely to burn tender plants.
Remove the flowers of daffodils and other early bulbs after they begin to fade so no energy is wasted in seed production. Allow foliage to mature and brown before removing, however, so it feeds the bulb for another show of blooms next spring.
If pruning of deciduous trees and shrubs has been delayed, don't hesitate any longer. The exception is spring-blooming plants, which should be pruned right after they finish blooming. Otherwise, remove dead limbs, crossing branches, and any winter damage, and thin out old wood as needed for renewal.
Plant Large Woodies Now
If your landscape plan calls for the addition of large trees and shrubs this year, plant them as soon as possible. Planting while dormant will not only ease their transition, but will also help large plants establish themselves more quickly.