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
Allium karatavlense (May-Jun)
Narcissus - many species
Tulipa-several species
 

Perennials
Ajuga reptans (Apr-May)
Alchemilla vulgaris (May-Jun)
Anemone pulsatilba (Apr-May)
Aguilegia hybrida (May-Jun)
Arabis caucasica (Mar-May)
Armeria maritip-ia (May-Jun)
Aubrieta deltoides (Apr-May)
Aurinia saxatills (Apr-May)
Baptisia australls (May-Jun)
Bergenia cordifolia (Apr-May)
Brunnera macrophylla (Apr-Jun)
Centaurea montana (May-Jul)
Cerastium tomentosum (May-Jun)
Convallana majalis (May)
Dianthus pulmarius (May-Jun)
Dicentra exlmia (May-Sep)
Dicentra spectabills (May-Jun)
Dictamnus albus (May-Jun)
Doronicum cordatum (May)
Epimedium x rubrum (May-Jun)
Erysirnum asperum (Apr-May)
Euphorbia cyparissias (May-Jun)
Euphorbia epithymoldes (Apr-May)
Euphorbia rnyrsinites (Apr-May)
Galium odoratum (May-Jun)
|Geranium himalayense (May-Jul)

Geum
species - Avens (May-Aug)

Hemerocallis species
(May-Sep)
lberis sempervirens (Apr-May)
Iris species - Iris (May-Jun)
Lamiastrum galeobdolon (Apr-May)
Mertensia virginica (Apr-May)
Paeonia lactiflora (May-Jun)
Paeonia suffruticosa (May-Jun)
Papaver nudicaule (Apr-Jul)
Phlox subulata (Mar-May)
Polemorium caeruleum (May-Jun)
Polygonatum commutatum (May-Jun)
Primrose x polyantha (Apr-May)
Pulmonaria angustifolia (Apr-May)
Pulmonaria saccharata (Apr-May)
Thymus serpyllum (May-Jun)
Tiarella cordifolia (May)
Trollius europaeus (May-Jun)
Viola odorata (Apr-May)
Waldsteinia fragarioides (May-Jun)

Shrubs
Amelanchier x grandiflora
Amelanchier stolonifera
Berberis thunbergii

Chaenomeles
species
Cornus sericea
Cotoneaster adpressa
Cotoneaster apiculata
Cotoneaster racemiflora
Calycanthus floridus
Caragana arborescens
Cytisus praecox
Cytisus purpureus
Cytisus scoparius
Daphne giraldii
Deutzia gracilis
Deutzia kalmiaeflora
Deutzia lemoinci
Deutzia rosea
Daphne eneorum
Deutzia grandiflora
Daphne giraldii
Deutzia gracilis
Deutzia lcalmiaefiora
Deutzia lemoinei
Deutzia rosen
Enkianthus campanulatus
Enkianthus perulatus
Exochorda giraldii
Exochorda korolkowii
Exochorda racemosa
Fothergilla
Kerria japonica
Laburnum species
Lonicera bella
Lonicera anloena
Lonicera korolkowii
Lonicera maackii
Lonicera morrowii
Lonicera tatarica
Magnolia cordata
Magnolia tripetala
Magnolia virginiana
Magnolia Watsonii
Magnolia fraseri
Magnolia liliflora nigra
Magnolia soulangiana vars.

Mahonia species

Photinia villosa
Potentilla fruticosa
Rhododendron atianticum
Rhododendron catawbiense
Rhododendron catawbiense 'Boule dc Neige'
Rhododendron catawbiense 'Charies Dickens'
Rhododendron catawbiense 'Mont Blanc'
Rhododendron fortunei 'Duke of York'
Rhododendron gandavense cultivars
Rhododendron japonicum
Rhododendron molle cultivars
Rhododendron periclymenoides
Rhododendron prinophyllum
Rhododendron smimowii
Rhododendron albrcchtii
Rhododendron canandense
Rhododendron carolinanum
Rhododendron obtusum
Rhododendron racemosum
Rhododendron schlippcnbachii
Rhododendron vaseyi
Rhododendron yedoense
Rhododendron mucronatum
Rhododendron hugonis
Rhododendron primula
Rhododendron x anthina
Rhodotypos scandens
Ribes odoratum
Ribes sanguineum
Robinia fertilis
Robinia kelseyi
Rosa ecae
Rosa hugonis
Rosa primula
Rosa x anthina
Rubus deliciosus
Sambucus pubens
Sorbus aucuparia
Spiraea prunifolia
Spiraea multitlora
Spiraea nipponica
Spiraea vanhouttei
Spiraea arguta
Spiraea thunbergii
Spiraea multiflora
Spiraea nipponica
Spiraea vanhouttei
Symplocos paniculata
Syringa chinensis
Syringa microphylla
Syringa persica
Syringa oblata
Syringa chinensis
Syringa hyacinthiflora
Syringa microphylla
Syringa persica
Syringa vulgaris-most vars.
Tamarix parvifiora
Vaccinum corymbosum
Viburnum lentago
Viburnum macrocephalum
Viburnum opulus
Viburnum plicatum
Viburnum prunifolium
Viburnum rufidulum
Viburnum carlesii
Viburnum lantana
Viburnum sieboldii
Viburnum trilobum
Viburnum Wrightii
Viburnum lantanoides
Weigela - many cultivars
Weigela 'Dame Blanche'
Weigela 'Lavallei'

Trees
Acer saccharum
Aesculus carnea
Aesculus hippocastanum
Celastrus species
Cercis canadensis
Cercis chinensis
Cornus florida
Cornus altemifolia
Cornus controversa
Cornus sericea
Cornus alternifolia
Cornus controversa
Crataegus araoldiana
Crataegus crus-galli
Crataegus oxyacantha
Crataegus pruinosa
Crataegus punctata
Crataegus succulenta
Davidia involucrata
Fraxinus ornus
Halesia species
Laburnum species
Malus amoldiana
Malus atrosanguinea
Malus baccata
Malus floribunda
Malus halliana
Malus hupehensis
Malus pumila niedzwetzkyana
Malus purpurea
 

Malus robusta
Malus spectabilis
Malus sytvestris
Malus zumi
Malus sargentii
Malus sieboldii
Malus angustifolia
Malus coronaria
Malus ioensis 'Plena'
Malus toringoides
Malus angustifolia
Malus coronaria
Malus ioensis 'Plena'
Malus toringoides
Pawlonia tomentosa
Prunus americana
Prunus avium
Prunus blireiana
Prunus giandulosa
Prunus hortulana
Prunus laurocerasusp. serotina
Prunus cera susp. virginiana
Prunus maritima
Prunus padu sp pensylvanicn
Prunus persica
Prunus serrulata
Pyrus calleryana
Pyrus communisp. ussuriensis
Tamarix parviflora

Vines

Wisteria
species
 

May
Ajuga reptans (Apr-May)
Alchemilla vulgaris (May-Jun)
Anemone pulsatilba (Apr-May)
Aguilegia hybrida (May-Jun)
Arabis caucasica (Mar-May)
Armeria maritip-ia (May-Jun)
Aubrieta deltoides (Apr-May)
Aurinia saxatills (Apr-May)
Baptisia australls (May-Jun)
Bergenia cordifolia (Apr-May)
Brunnera macrophylla (Apr-Jun)
Centaurea montana (May-Jul)
Cerastium tomentosum (May-Jun)
Convallana majalis (May)
Dianthus pulmarius (May-Jun)
Dicentra exlmia (May-Sep)
Dicentra spectabills (May-Jun)
Dictamnus albus (May-Jun)
Doronicum cordatum (May)
Epimedium x rubrum (May-Jun)
Erysirnum asperum (Apr-May)
Euphorbia cyparissias (May-Jun)
Euphorbia epithymoldes (Apr-May)
Euphorbia rnyrsinites (Apr-May)
Fritilaria imperialis (Apr-May)
Fritillania meleagnis (Apr-May)
Galium odoratum (May-Jun)
Geranium himalayense (May-Jul)

Geum
species - Avens (May-Aug)

Hemerocallis species
(May-Sep)
lberis sempervirens (Apr-May)
Iris species - Iris (May-Jun)
Lamiastrum galeobdolon (Apr-May)
Mertensia virginica (Apr-May)
Paeonia lactiflora (May-Jun)
Paeonia suffruticosa (May-Jun)
Papaver nudicaule (Apr-Jul)
Phlox subulata (Mar-May)
Polemorium caeruleum (May-Jun)
Polygonatum commutatum (May-Jun)
Primrose x polyantha (Apr-May)
Pulmonaria angustifolia (Apr-May)
Pulmonaria saccharata (Apr-May)
Thymus serpyllum (May-Jun)
Tiarella cordifolia (May)
Trollius europaeus (May-Jun)
Viola odorata (Apr-May)
Waldsteinia fragarioides (May-Jun)
Allium karatavlense
(May-Jun)

Late May
Ajuga reptans
Aronia species
Celastrus species
Cornus altemifolia
C. controversa
C. sericea
Cotoneaster adpressa
C. apiculata
C. racemiflora
Crataegus crus-galli
C. oxyacantha
C. pruinosa
C. punctata
C. succulenta
Daphne giraldii
Dicentra spectabilis
Deutzia gracilis
D. lcalmiaefiora
D. lemoinei
D. rosen
Epimedium species - Barrenwort
Laburnum species
Lonicera amoena
L. korolkowii
L. maackii
L. morrowii
L. tatarica
Magnolia cordata
M. tripetala
M. virginiana
M. Watsonii
Matus angustifolia
M. coronaria
M. ioensis 'Plena'
M. toringoides
Paeonia lactiftora
P. olficinalisp. suifruticosa
Photinia villosa
Potentilla fruticosa
Pruiius laurocerasusp. serotina
Ranunculus bulbosus
Rhododendron atianticum
R. catawbiense
R. catawbiense'Boule de Neige'
R. catawbiense'Charies Dickens'
R. catawbiense'Mont Blanc'
R. fortunei 'Duke of York'
R. gandavense cultivars
K. japonicum
K. molle cultivars
R. periclymenoides
K. prinophyllum
R. smimowii
Robinia fertilis
K. kelseyi
Rosa ecae
R. hugonis
R. primula
K. x anthina
Rubus deliciosus
Spiraea multitlora
S. nipponica
S. vanhouttei
Symplocos paniculata
Syringa chinensis
S. microphylla
S. persica
Tamarix parvifiora
Thymus serphyllum
Vaccinum corymbosum
Viburnum lentago
V. macrocephalum
V. opulus
V. plicatum
V. prunifolium
V. rufidulum

Early May
Acer saccharum
Amelanchier x grandiflora
A. stolonifera
Aubrefia deltoidea
Aurinia saxatile
Bergenia cordifolia

Chaenomeles
species and vars.
Crataegus araoldiana
Dandelion
7b2
Enkianthus perulatus
Exochorda giraldii
Lamium maculatum
Magnolia soulangiana vars.

Mahonia
species
- Oregon Grape Holly Malus amoldiana
M. atrosanguinea
M. baccata
M. floribunda
M. halliana
M. hupehensis
M. pumila niedzwetzkyana
M. purpurea
M robusta
M. spectabilis
M. sylvestris
M. zumi
Mertensia virginica
Narcissus-many species
Phlox subulata
Primula polyantha
Prinsepia sinensis
Prunus americana
P. avium
P. blireiana
P. giandulosa
P. hortulana
P. maritima
P. padusp. pensylvanica
P. persica
P. serrulata
Pyrus catleryana
P. communisp. ussuriensis
Rhododendron mucronatum
Ribes odoratum
Spiraea arguta
S. thunbergii
Syringa hyacinthiflora
S. oblata
Tulipa-several species
Viburnum lantanoides (V. aln,foliu,n)
Viola-several species Mid-May
Aesculus carnea
A. hippocastanum
Aurinia saxatile
Berberis thunbergii
Calycanthus floridus
Caragana arborescens
Cercis canadensis
C. chinensis
Cornus florida
Cydoria oblonga
Cytisus praecox
C. purpureus
C. scoparius
Daphne eneorum
Davidia involucrata
I'.,-,

Deutzia grandiflora
Dicentra eximia
Dodecatheon meadia
Enkianthus campanulatus
Exochorda korolkowii
E. racemosa
Fothergilla
Fraxinus ornus
Halesia species
Hemerocallis flava
Iberis sempervirens
Kerria japonica
Lonicera bella
Magnolia fraseri
M. liliflora nigra
Malus sargentii
M. sieboldii
Papaver orientale
Pawloaia tomentosa
Phlox divaricata
Phlox subulata
Prunus cerasusp. virginiana
Rhodendron albrcchtii
R. canandense
R, carolinanum
R. obtusum
R. racemosum
R. schlippcnbachii
R. vaseyi
R. yedoense
Rhodotypos scandens
Ribes sanguineum
Sambucus pubens
Sorbus aucuparia
Spiraea prunifolia
Syringa vulgaris-most vars.
Trollius europaeus
Viburnum carlesii
V. lantana
Weigeta-many cultivars Late May
Ajuga reptans
Aronia species
Celastrus species
Coitus altemifolia
C. controversa
C. sericea
Cotoneaster adpressa
C. apiculata
C. racemifiora
Crataegus crus-galli
C. oxyacantha
C. pruinosa
C. punctata
C. succulenta
Daphne giraldii
Dicentra spectabilis
Deutzia gracilis
D. kalmiaeflora
D. lemoinci
D. rosea
Epimedium species - Barrenwort
Laburnum species
Lonicera anloena
L. korolkowii
L. maackii
L. morrowii
L. tatarica
Magnolia cordata
M. tripetala
M. virginiana
M. Watsonii
Malus angustifolia
M. coronaria
M. ioensis 'Plena'
M. toringoides
Paeonia lactiftora
P. officinalisp. suifruticosa
Photinia vitlosa
Potentilla fruticosa
Prunus laurocerasus subsp. serotina
Ranunculus bulbosus
Rhododendron atianticum
R. catawbiense
R. catawbiense'Boule dc Neige'
R. catawbiense Charies Dickens'
It. catawbiense'Mont Blanc'
R. fortunei 'Duke of York'
R. gandavense cultivars
R. japonicum
R. molle cultivars
R. periclymenoides
R. prinophyllum
R. smimowii
Robinia fertilis
R. kelseyi
Rosa ecae
R. hugonis
R. primula
R. x anthina
Rubus deliciosus
Spiraea multiflora
S. nipponica
S. vanhouttei
Symplocos paniculata
Syringa chinensis
S. microphylla
S. persica
Tamarix parviflora
Thymus serphyllum
Vaccinum corymbosum
Viburnum lentago
V. macrocephalum
V. opulus
V. plicatrnn
V. prunifolium
V. rufidulum
V. sieboldii
V. trilobum
V. wrightii
Viola cornuta
Weigela'Dame Blanche'
W. 'Lavallei'

Wisteria
species

Early May
Acer saccharum
Amelanchier x grandiflora
A. stolonifera
Aubretia deltoidea
Aurinia saxatile
Bergenia cordifolia
Chaenon,eles species and vars.
Crataegus amoldiana
Dandelion
Enkianthus perulatus
Exochorda giraldii
Lamium maculatum
Magnolia soulangiana vars.

Mahonia
species
- Oregon Grape Holly Malus amoldiana
M. atrosanguinea
M. baccata
M. floribunda
M. halliana
M. hupehensis
M. pumila niedzwetzkyana
NI. purpurea
NI. robusta
M. spectabilis
M. sytvestris
M. zumi
Mertensia virginica
Narcissus-many species
Phlox subulata
Primula polyantha
Prinsepia sinensis
Prunus americana
P. avium
P. blireiana
P. giandulosa
P. hortulana
P. maritima
P. padusp. pensylvanicn
P. persica
P. serrulata
Pyrus calleryana
P. communisp. ussuriensis
Rhododendron mucronatum
Ribes odoratum
Spiraea arguta
S. thunbergii
Syringa hyacinthifiora
S. oblata
Tulipa-several species
Viburnum lantanoides (V. ainifoliwn)
Viola-several species Mid-May
Aesculus carnea
A. hippocastanum
Aurinia saxatile
Berberis thunbergii
Calycanthus floridus
Caragana arborescens
Cercis canadensis
C. chinensis
Cornus florida
Cydoria oblonga
Cytisus praecox
C. purpureus
C. scoparius
Daphne eneorum
Davidia involucrata
Dcutzia grandifiora
Dicentra eximia
Dodecatheon meadia
Eakianthus campanulatus
Exochorda korolkowii
E. racemosa
Fothergilla
Fraxinus ornus
Halesia species
Hemerocallis flava
Iberis sempervirens
Kerria japonica
Lonicera bella
Magnolia fraseri
M. lilifiora nigra
Malus sargentii
M. siebotdii
Papaver orientale
Pawloria tomentosa
Phlox divaricata
Phlox subulata
Prunus cerasusp. virginiana
Rhodendron albrechtii
R. canandense
R. carolinanum
R. obtusum
R. racemosum
R. schlippenbachii
R. vaseyi
R. yedoense
Rhodotypos scandens
Ribes sanguineum
Sambucus pubens
Sorbus aucuparia
Spiraea prunifolia
Syringa vulgaris-most vars.
Trollius europaeus
Viburnum carlesii
V. lantana
Weigela-many cultivars

May
Bicolor:    
Blue:
  • Ajuga genevensis
  • A. pyramidalis
  • A. reptans
  • Centaurea montana
  • Geranium himalayense
  • Iris
  • Linum narbonense
  • Loperenne
  • Mazus reptans
  • Myosotis alpes
  • Myosotis scorpioides
  • Myosotis sylvatica
  • Phlox divaricata
  • P stolonifera
  • P subulata
  • Polemorium caeruleum
  • Primula polyantha
  • Veronica prostrota
  • Viola cornuta
Orange:  
Pink:
  • Antennaria milaica
  • Armenia marillma
  • Cypripedium acaule
  • Dianthus allwoodii
  • Dianthus deltoides
  • Dicentra Taiwan
  • Dicentra spectabiIis
  • Geranium sanguineum
  • Geranium sinereum
  • Geum rivale
  • Heuchera sanguinea
  • Heucherella alba
  • Incarvillea delavayi
  • Iris germanica
  • Phlox subulata
  • Primula japonica 
  • Primula polyanthis 
  • Saponaria ocymoides
Purple:
  • Thalictrum aquilegifolium
  • Verbena rigido
Red:
  • Armnerio maritima
  • Dianthus deltoides
  • Dianthus gratianapalitanus
  • Dianthus plumarius
  • Geranium sanguineum
  • Geum crilicense
  • Heuchera sanguinea
  • Iris germanica 
  • Lychnis viscaria
  • Paeonea officinalis
  • Paeonea tenuifalia
  • Phlox subulata
  • Primula japonica
  • Primula polyantha 
  • Viola camula
White:
  • Achillea ageratifalia
  • Aegopodium podagraria
  • Anemone sylvestris
  • Arenaria montana
  • Armneria maritima
  • Convallaria majalis
  • Dianthus allwoodii
  • Dianthus deltoides
  • Dianthus plumarius
  • Dicentra spectabilis
  • Epimedium yaungianum
  • Geranium sanguineum
  • Heuchera sanguinea
  • Iberis sempervirens
  • his germanica 
  • Mazus reptans
  • Phlox subulata
  • Polemorium caeruleum
  • Polyganatum biflanim
  • Primula japonica
  • Primula polyantha 
  • Tiarella cordifolia
  • Viola cornuto
Yellow:
  • Allium moly
  • Anthemes biebersteiniana
  • Chrysoganum virginianum
  • Epimedium pinnoturn
  • Geum chiloense
  • Iris germanica 
  • Lamiastrum galeabdolan
  • Primula palyontha
  • Trollius europaeus
  • Viola cornuto

 

 
Copyright© 2000 -