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Spring

Seasonal Bloom Calendar

March

Early            

Corylus (hazelnuts)

Jasminum nudiflorum (Winter jasmine)

Lonicera x purpusii and L. standishii (Winter honeysuckles)

Late

Cornus mas (Cornelian cherry dogwood)

Cornus officinalis (Japanese cornel dogwood)

Corylopsis glabrescens (Winter-hazel)

Lonicera fragrantissima, L. x purpusii, L. standishii (Winter honeysuckles)

Magnolia denudata (Yulan magnolia)

Magnolia kobus

Magnolia salicifolia (Anise-leaved magnolia)

Magnolia stellata (Star magnolia)

Parrotia persica (Persian parrotia)

Pieris japonica

Sarcococca hookeriana humilis (Himalayan sweetbox)

Viburnum farreri and V. utile (Early viburnum species)

April

Early

Abeliophyllum distichum (White forsythia)

Chaenomeles spp. (Flowering quinces)

Corylopsis grove (Winterhazel)

Edgeworthia chrysantha (Paperbush)

Forsythia species

Viburnum farreri

Lindera benzoin (Spicebush)

Magnolia kobus

Magnolia salicifolia (Anise-leaved magnolia)

Magnolia x soulangiana (Saucermagnolia)

Magnolia sprengeri ‘Diva’

Magnolia stellata

Pieris japonica 

Mid

Camellia japonica (Japanese camellia)

Chaenomeles spp. (Flowering quinces)

Corylopsis grove (Winter-hazel)

Magnolia x loebneri ‘Merrill’ (Loebner magnolia)

Magnolia x ‘Royal Crown’

Magnolia x soulangiana (Saucer magnolia)

Magnolia stellata (Star magnolia)

Magnolia x veitchii

Magnolia (xveitchii) x denudata

Magnolia x ‘Wada’s Memory’

Prunus x ‘Hally Jolivette’ (Shrubbyflowering cherry)

Stachyurus praecox

Late

Amelanchier species and cultivars (Shadblow serviceberry)

Elaeagnus multiflora (Cherry eleagnus)

Fothergilla species

Magnolia x soulangiana (Saucer magnolia)

Magnolia x veitchii

Magnolia ‘Elizabeth’

Skimmia japonica

Viburnum x burkwoodii

 

Late April-Early May

Cercis canadensis (Redbud)

Cornus florida (Flowering dogwood)

Malus species and cultivars (Flowering crabapples)

Fothergilla species

Poncirus trifoliata (Hardy-orange)

Rhododendron schlippenbachii (Royal azalea)

Rhododendron yedoense poukhanense (Korean azalea)

Staphylea colchica (Bladdernut)

Staphylea pinnata (European bladdernut)

Syringa hyacinthiflora cultivars (Lilac)

Viburnum buddleifolium

Viburnum carlesii (Koreanspice viburnum)

 

May

Early

Berberis koreana (Korean barberry)

Cornus florida (Flowering dogwood)

Davidia involucrata (Handkerchief  tree)

Halesia carolina (Carolina silverbell)

Kerria japonica

Laburnum x watereri ‘Vossii’ (Goldenchain tree)

Neviusia alabamensis (Alabama snow-wreath)

Syringa hyacinthiflora cultivars (Lilac)

Syringa vulgaris cultivars (French hybrid and other hybrid lilacs)

Rhododendron (Evergreen azaleas)

Rosa hugonis (Father Hugo rose)

Sorbus commixta (Japanese mountain-ash)

Staphylea trifolia (American bladdernut)

Ugnadia speciosa (Mexican buckeye)

Wisteria sinensis (Chinese wisteria) 

Early-Mid

Aesculus species (Horsechestnuts and Buckeye collection)

Asimina triloba (Pawpaw)

Calycanthus floridus (Sweetshrub)

Chionanthus virginicus and cultivars (Fringetree)

Cornus alternifolia (Pagoda dogwood)

Cornus controversa (Giant dogwood)

Cotoneaster

Davidia involucrata (Handkerchief tree)

Itea virginica (Virginia sweetspire)

Lonicera korolkowii (Blueleaf honeysuckle)

Magnolia acuminata (Cucumber magnolia)

Magnolia pyramidata

Magnolia tripetala (Umbrella magnolia)

Neillia sinensis

Paeonia (Laura Barnes seedlings)

Paeonia suffruticosa (Tree peony cultivars)

Paulownia tomentosa (RoyalPaulownia)

Phellodendron lavallei (Lavalle corktree)

Rhododendron carolinianum

Rhododendron (Evergreen azaleas)

Sorbus torminalis (Wild servicetree)

Spiraea x vanhouttei (Vanhoutte spirea)

Symplocos paniculata (Sapphireberry)

Syringa vulgaris cultivars (French and other hybrid lilacs)

Ugnadia speciosa (Mexican buckeye)

Viburnum macrocephalum ‘Sterile’ (Chinese snowball)

Viburnum plicatum tomentosum (Doublefile viburnum)

Viburnum plicatum tomentosum ‘Rosace’ (Pink snowball doublefile)

Viburnum prunifolium (Blackhaw)

Viburnum setigerum (Tea viburnum)

Viburnum sieboldii

Mid

Aesculus species (Horsechestnuts and Buckeye collection)

Chionanthus virginicus (Fringetree)

Chionanthus retusus and its cultivars (Chinese fringetree)

Cotoneaster species

Kerria japonica cultivars

Magnolia acuminata (Cucumber magnolia)

Magnolia pyramidata

Magnolia tripetala (Umbrella magnolia)

Paeonia (herbaceous cultivars incl. Laura Barnes seedlings)

Paeonia suffruticosa (Tree peonies)

Phellodendron amurense (Amur corktree)

Rhododendron calendulaceum (Flame azalea)

Rhododendron (various species incl. azaleas)

Syringa x prestoniae cultivars (Preston hybrid lilacs)

Mid-Late

Calycanthus x raulstonii

Cladrastis kentukea (Yellowwood)

Kalmia latifolia (Mountain-laurel)

Kolkwitzia amabilis (Beautybush)

Magnolia sieboldi

Paeonia (herbaceous cultivars incl. Laura Barnes seedlings)

Paeonia suffruticosa (Tree peonies)

Phellodendron chinense (Chinese corktree)

Physocarpus opulifolius (Ninebark)

Rhododendron (many species and cultivars)

Stephanandra incisa, S. incisa ‘Crispa’

Styrax japonica (Japanese snowbell)

Styrax obassia (Fragrant snowbell)

Viburnum dilatatum (Linden viburnum)

Weigela cultivars

 

Late May-Early June

Cladrastis kentukea (Yellowwood)

Dipteronia sinensis (Chinese Money maple)

Kalmia latifolia (Mountain-laurel)

Liriodendron chinense (Chinese tuliptree)

Liriodendron tulipifera (Tuliptree)

Magnolia sieboldii

Paeonia (herbaceous cultivars incl. Laura Barnes seedlings)

Paeonia suffruticosa (Tree peonies)

Philadelphus species and cultivars (Mock-orange)

Rhododendron catawbiense

Rosa (early cultivars and species)

Styrax japonica (Japanese snowbell)

Styrax obassia (Fragrant snowbell)

Trochodendron aralioides (Japanese wheel tree)

Note:

Bloom times vary depending on weather, especially during winter and the winter–spring transitional period; bloom times vary less in late spring, summer, and autumn.

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