Every landscape plant (seed producers anyway) has a time during the growing season when it develops flower buds and blooms. The list below reflects blooming dates for common landscape plants in USDA Hardiness Zone 5.

Of course, in different zones, the actual dates of blooming may differ i.e. earlier in the South and later in the North. However, the relative time of bloom for various species will be the same. That is, crocus will bloom before candytuft which will bloom before coneflowers.

Bulbs
Crocus imperati
Crocus species - Crocus (Feb-Apr)
Eranthis hyemalis (Feb-Mar)
Gatanthus nivalis
Galanthus nivalis (Feb-Mar)
 
Iris reticulata (Mar)
Leucoium vemum (Feb-Apr)
Scilla sibirica (Mar-Apr)

Perennials
   

Shrubs
Hamamelis japonica
Hamamelis mollis
Salix species
 

Trees
Acer saccharinum
Corylus species
 

Vines
   

March-April
Bicolor: Aquilegia canadensis, Primula aunaula, Viola tricolor
Blue: Brunnera macrophylla, Mertensia virginica. Polemorium reptans, Pulmonaria angustifolia, P. saccharata, Vinca minor
Orange:  
Pink: Aethionema x warteyense, Aubrieta deltoidea, Bergenia cordifolia, Dicentra eximia, Helleborus orientalis, Lamium maculatum, Peltiphyllum paltatum, Pulmonaria saccharata, Viola odorata
Purple: Anemone pulsatilla, Aubrieta deltoidea, Primula denticulata, Viola odorata
Red: Anemone pulsatiIla, Bergenia cordifolia, Primula auricula, Pulmonoria saccharata, Trillium erectum, Viola odorata
White: Allium neapalitanum, Anemone pulsatiIla, Arabis procumbens, Asperula odorata, Bergenia cordifolia, Dicentra cuculloria, Helleborus niger, Lamium maculaium, Pachysandra terminalis, Primula denticulata, Pulmonaria angustifolia, P. saccharata, Sanguinaria canadensis, Trillium grandiflorum, Vinca minor, Viola odorata
Yellow: Eranthis

 

 

 
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