Post on 15-May-2020
transcript
~1
ARNOLDIA
A continuation of theBULLETIN OF POPULAR INFORMATION
of the Arnold Arboretum, Harvard University
VOLUME 10 JUNE 16, 1950 NUMBERS 7-8
ORDER OF BLOOM
ALTHOUGH the actual dates on which certain plants bloom will vary fromyear to year, the sequence will remain the same. Lilacs will always beginto flower a little after some of the crab apples have reached their peak ; mostof the rhododendrons will follow the lilacs, and the mock oranges will follow therhododendrons. Records of the sequence and the time of bloom of the many
flowering trees and shrubs in the Arnold Arboretum have been kept over a longperiod of years and in the following lists some of them are recorded in their
sequence and in the approximate time when they can be expected to flower
normally.It should be stressed that some shrubs especially those with double flowers
will remain in flower longer than others and hence can be used effectively in
gardens with plants that are noted as blooming later. Still others are effective in
flower bud and might be planted with varieties blooming earlier. Local studies
along this line should prove most interesting to individual gardeners.In this connection it might be of interest to note the different times at which
Cornu.s florida blooms throughout the country. This tree has a wide habitat o~ erthe eastern United States and is so beautiful that it ~s highly valued as an orna-mental wherever it is bud hardy. It can be expected to bloom in the followingplaces at the approximate times mentioned.
Glen St. Mary, Florida
Augusta, GeorgiaSt. Louis, MissouriAshville, North CarolinaWashington, D.C.
Lexington, KentuckyColumbus, Ohio
Nlid-Februar~~Late MarchEarly AprilMid-AprilLate April« ..
Early May
41~
Philadelphia, PennsylvaniaLondon, EnglandChicago, IllinoisDetroit, MichiganRochester, New YorkBoston, MassachusettsSeattle, WashingtonPortland, Maine
Early May.< «
Mid-May«
« <
« 4
«
Late May
One other series of dates has proved interesting at the Arnold Arboretum.There is a weeping willow tree adjacent to the Administration Building whichturns green almost over night when the weather is just right. Since the bud
scales of willows are valvate, the bud scales drop when the temperatures are highenough and the young foliage quickly swells and gives the tree a green appear-ance. Since this happens rapidly-almost overnight-the dates on which thisoccurs afford a valuable commentary on the earliness or lateness of the season.
The following are the dates for the past eleven years.
The following order of bloom is applicable in localities other than New Eng-land. If local blooming dates of a few key plants are noted and the differenceschecked with those given in the following sequence, then all the dates can be
correspondingly shifted and the sequence can thus be adapted to local climatic
conditions.Order of Bloom
(All plants in the following lists are growing in the Arnold Arboretum underpractically the same soil and climatic conditions and have bloomed together inthe following sequence.)
February ~ March
Hamamelis vernalis Acer saccharinum
43
Corylus speciesHamamelis japonica
"
mollis
Sahx speciesSnowdrop and Crocus
Early April
Acer rubrum
Alnus incana""
rugosa
Cornus mas"
officinalis
Daphne mezereumErica carnea
Forsythia ovataJasminum nudiflorum
Lonicera praeflorensPopulus speciesPrunus davidiana
Ulmus americana
Viburnum fragrans
Mid-April
Abeliophyllum distichumAcer negundoBetula speciesCercidiphyllum japonicumCorylopsis speciesDirca palustrisEpigaea repensForsythia europaea
"
intermedia varieties"
suspensa sieboldi"
viridissima
Lindera benzoin
Lonicera fragrantissima"
purpusi"
standishi
Pieris japonicaRhododendron dauricum
"
mucronulatum
Shepherdia argentea
, Late April
Acer circinatum"
diabolicum purpurascens"
platanoidesAmelanchier canadensis
"
laevis"
spicataBuxus microphyllaChamaedaphne calyculataEuptelea polyandraLonicera altmanni pilosiuscula
66
tenuipesMagnolia denudata
"
kobus"
borealis"
salicifolia"
stellata
Malus baccata mandshurica
Myrica galePieris floribunda
Poncirus trifoliata
Prunus armeniaca""
canescens"
cerasifera"
concinna"
cvclamina a"
dasycarpa"
domestica"
incisa and varieties"
juddi"
mandshurica"
nipponica"
sargenti"
subhirtella and varieties41
tomentosa"
triloba"
yedoensisSpiraea prunifoliaVinca minor and varieties
Early May
Acer campestre .
PLATE X
Viburnum tomentosum mariesi. This variety has larger flowers and fruits than thecommonly grown Doublefile Viburnum (T : tomentosum).
45
Acer saccharum
Amelanchier grandiflora"
humilis" ."
sanguinea"
stolonifera
Andromeda glaucophy-lla"
polifoliaBerberis dictyophyllaCarpinus carolimana
’
Chaenomeles japomca and varieties"
lagenaria and varietiesCrataegus arnoldianaCytisus decumbens’ "
elongatus"
beani
Dandelion
Enkianthus perulatusExochorda giraldiLedum groenlandicumLonicera canadensis
C‘
coerulea""
saccata
Magnolia soulangeana and varietiesMahonia speciesMalus adstrmgens and varieties
‘‘C
arnoldiana"
astracanica46
atrosanguinea"
baccata"
brevipes"
floribunda ’
"
halliana and varieties"
hupehensis"
micromalus"
prunifolia and varieties"
pumila niedzwetzkana"
purpurea and varieties"
robusta and varieties"
scheidecl;er~"
soulardi"
spectabilis and varieties"
sylvestris
Malus zumi and varieties
Myrica pensylvanicaNarcissus
Bemophanthus mucronatusOrixa japonicaOsmaronia cerasiformis
Pachysandra terminalisPhlox subulata
Primula elatior superba"
polyanthaPrinsepia sinensisPrunus alleghaniensis
" ,
11
americana"
avium"
blireiana and varieties ,
"
glandulosa and varieties"
hortulana"
incana"
instititia"
japonica nakai"
maritima"
padus and varieties"
pensylvanica"
persica and varieties e,"
pumila susquehanae !
"
serrulata and varieties
(Many double-flowered forms start-ing to bloom and continuing for twoweeks at least, depending on thevariety, some being slightly earlierthan others.)
Prunus sieboldi
Pyrus communis and varietiesRhododendron mucronatum
"
venustum
Rhus aromatica
Ribes alpinum""
aureum"
gordonianum ,
"
odoratum
Spiraea arguta"
thunbergi
46
Syringa hyacinthiflora and varieties"
oblata dilatata ‘
TulipsViburnum alnifolium
" 6
buddleifolium"
burejaeticumViolets
Xanthorhiza simplicissimaZanthoxylum amencanum
Mid-May
Acer palmatumAesculus arguta
"
bushi""
carnea"
glabra"
hippocastanum"
neglectaAkebia quinata
" tnfoliata
Alyssum gemonense"
saxatile
Amelanchier amabilis
Amelasorbus jackiAristolochia manshuriensis
Berberis dielsiana"
julianae"
koreana"
stenophylla"
thunbergi and varieties""
vernae"
vulgarisCalycanthus floriclusCaragana arborescens
"
frutex"
sophoraefoliaCercis canadensis
"
chinensis
Cornus florida
Cydonia oblongaCytisus praecox
" 6"
purgans
Cytisus purpureus61
scopariusDaphne altaica
6 1
caueasica""
eneorum
Deutzia grand itiora .
Uavidia involucrata
Elaeagnus multiflora46
umbellata
Enkianthus campanulatusEuonymus alata
11
latifolia
Exochorda korolkowi,.
macrantha""
racemosa
Fothergilla species ’
Halesia carolina6 6
monticola
Iberis tenoreana
Kerria japonicaLeitneria floridana
Lonicera alpigena66
bella a66
chrysantha6 6
muendeniensisig
muscaviensis14
syringantha66 11
wolfi46
thibetica66
xylosteumMagnolia fraseri
16
lihflora nigraMalus bracteata .
"
glaucescens"
ioensis"
sargenti"
sieboldi and varieties
Papaver orientalePaulownia tomentosa ’
Prinsepia unifloraPrunus cerasus
"
maacki
;;:.
.."
"ê
~G
’a0a..0::s
x
Hic
a~wII)... .-!
~ ’"
¡.¡ .;!:H ~a ~~a, ~
’"U
N8
<:N
yeCG
II)Y~
CO
~
U~~.~V
48
Prunus virginiana _
Quercus speciesRhododendron albrechti
41
eanadenseit
carolinianumis
fraseriit
luteum .
is
obtusum amoenumis 64
arnoldianum46
Hmodegtr)’ " "
japonicum"
. "kaempferi"
racemosum"
reticulatum"
schlippenbachi« ."
vaseyi"
yedoense"
64 poukhanenseRhodotypos scandensRibes sanguineumSambucus pubensSibiraea laevigataSorbus aucupariaSpiraea cinerea
"
gemmata44
hypericifolia44
inflexa"
media ’
, ,
mollifolia"
oxyodon"
pikoviensis"
prunifolia plena"
pubescensSyringa vulgaris and varieties
(With over 300 varieties, it is im-
possible to list them here as early,medium and late, although somemight be so listed.)
Vaccinium angustifolium laevifoliumViburnum bitchiuense
44
burkwoodi"
carlesi
Viburnum juddi«
lantana
Weigela "Conquerant"« ‘<F,leur de D~a~"" "Floreal"«
florida venusta« "Gracieux"
Wisteria venusta and varieties
Late May
Acer ginnalaAronia arbutifolia
"
melanocarpa«
prunifoliaAsimina triloba
Berberis arnurensis«
circumserrata«
o~adnepaini«
verruculosa
Berchemia racemosa
ButtercupCaragana maximowiczianaCelastrus flagellaris
«
orbiculata<‘
scandens
Cornus alternifolia6 6
controversa"
stolonifera
Coronilla emeroides
Cotoneaster adpressa«
apiculata«
divaricata«
foveolata<‘
nitens«
racemiflora
Crataegus crus-galli"
oxyacrantha«
‘< pauli«
pruinosa"
punctata«
succulenta
Daphne giraldi
>.s-
sro~Ec
800~
)-~ ~1~· yIV ^rW t~ II)
N ~<!* 4)
~^4 ~~Y
G7
..c:1~
_~OU’§O¡;I:ja X’-H
[~o_
DayliliesDeutzia candelabrum
"
gracilis"
kalmiaeflora"
lemoinei and varieties"
rosea and varieties
Dipelta floribundaEnkianthus deflexus
"
subsessilis
Fendlera wrightiFontanesia fortunei
Gaylussacia baccataGenista pilosaIberis sempervirens
’
Juglans sieboldianaLaburnum speciesLeucothoe racemosa
Lonicera amoena"
korolkowi"
maacki"
maximowiczi sachalinensis"
morrowi"
tatarica and varieties
Magnolia cordata"
soulangeana lennei"
tripetala"
virginiana"
watsoni
Malus angustifolia"
coronaria" "
charlottae" ioensis plena"
toringoidesNeillia sinensis
Paeonia suffruticosa
Petteria ramentacea
Philadelphus hirsutus"
schrenki jackiPhotinia villosa
Physocarpus amurensis""
monogynus
Potentilla fruticosa and varieties
Prunus laurocerasus schipkaensis" <
serotina
Rhamnus cathartica
Rhododendron atlanticum"
catawbiense "Boulede Neige"
Rhododendron catawbiense "CharlesDickens"
Rhododendron catawbiense "MontBlanc"
Rhododendron fortunei "Duke ofYork"
Rhododendron gandavense hybrids"
japonicum"
molle hybrids"
nudiflorum""
roseum"
smirnowi
Robinia elliotti"
fertilis"
kelseyi"
slavini
Rosa ecae"
hugonis"
primula" xanthina a
Rubus deliciosus
Schisandra chinensis
Smilax rotundifolia
Spiraea blumei"
cantoniensis"
multiflora"
nipponica" rotundifolia"
trilobata"
vanhouttei
Staphylea colchica"
trifolia
Symplocus paniculataSyringa chinensis
"
julianae"
meyeri
51
Syringa microphylla"
persica"
pinetorum"
potanini"
pubescens"
velutina‘ ‘
wolfi" ."
yunnanensisTamartx parvifloraThymus serpyllumVaccinium corymbosumViburnum lentago
"
macrocephalum sterile"
opulus roseum"
rafinesquianum"
rhytidophyllum"
rufidulum"
sieboldi i"
tomentosum" "
sterile"
trilobum"
wrightiWeigela "Dame Blanche"
"
"Lavallei"Wisteria floribunda and varieties
"
formosa"
sinensis and varieties
Early June
Abelia englerianaActinidia argutaBuddleia alternifolia
Ceanothus ovatus
Chionanthus retusus"
virginicusCladrastis lutea
Cornus alba"
kousa""
rugosa
Cotinus coggygriaDaphne ponticaDecaisnea fargesi
Elaeagnus angustifoliaEuonymus atropurpurea
"
bungeanaGenista hispanica
"
tinctoria
Halimodendron halodendron
Helianthemum nummularmm
Hydrangea petiolaris"
xanthoneura wilsoni
Idesia polycarpaIlex opaca
Indigofera amblyanthaJamesia americana
’
Kolkwitzia amabilis
Leucothoe catesbaei
Lonicera ruprechtianaMagnolia sieboldiPeriploca graeca
" .
6 6
sepiumPhellodendron amurense
Philadelphus "Banniere""
.11
caucasicus"
" Cole’s Glorious""
" Conquete"" ,"
coronarius"
"Coupe d’Argent""
floridus"
laxus"
magdalenae" Manteau de Hermine""
maximus"
nepalensis -
"
pekmensis"
" Rosace" <
"
tomentosus
Physocarpus intermedius"
opulifoliusRhamnus davurica
"
frangulaRhododendron arbutifolium
"
calendulaceum"
catawbiense and vars.
.7~
Rhododendron ferrugineum44
laetevirens66
minus41 "Mrs. C. S. Sargent""
"Purpureum Grandi-florum"
RhuspotaniniRobiniahartwigi
14
hispidaIt
pseudoacaciaRosa acicularis
arnoldiana -
"
bella
blandafoetida bicolor46
harisoni
I’heritieranaroxburghirubrifoliarugosa and varietiesspinosissima and varieties44 N%,ilimottiae
Sassafras albidum
Sophora viciifoliaSpiraea blanda
46
chamaedryfolia46
henryi46
trichocarpa44
wilsoni
Staphylea pinnataStyrax americana
"
.japontea"
obassia
Syrmga henryi and varieties11
josikaea and varieties"
komarowi"
prestoniae and varieties..
renexa.
"
swegmzOBB’J"
tomentelia"
x,illosa
Vaccinillm stamineum
Viburnum cassinoides"
dentatum"
dilatatum and varieties"
hupehense"
lobophyllum"
opulus"
prunifolium"
sargentiWeigela florida
"
" Gratissima"Wisteria macrostachva
Mid-June
Amorpha fruticosa"
glabraCastanea pumilaCatalpa speciosaCeanothus americanus
Cornus amomum"
bretschneideri""
coreana""
racemosa
Cotinus americanus
Cotoneaster dielsiana"
horizontalis"
multiflora
Crataegus phaenopyrumDeutzia "Contraste"
" 6
"Magicien""
magnificaDiospyros virginianaEuonymus europaea
"
fortunei vegetaGymnocladus dioicusHydrangea bretschneideriIlex glabra"
verticillata
Indigofera decora.‘
kirilowi.
"
potaniniKalmia angustifolia
"
latifolia
EayN0Fv
t)
~G
~G7a0apW. bc.
X =3~! 0 ~t
a~CLt ~
v
C~
a~h
<u
x1~d
V§O’~~._~~
54
Ligustrum amurense"
ibolium«
i bota ’
" obtusifolium
" 6 4
regelianum"
ovalifolium"
vulgareLiriodendron tulipiferaLonicerabrowni
6 6
iberica14
japonica halliana66
periclymenumL yonia ligustrina
44
mariana
Philadelphus "Albatre""
66 Argentine" .
46 Atlas44 46 Avalanche""
66 Bouquet Blanc"66
46 Boule d’Argent"""
cymosus" Girandole"66 "Glacier""
grandiflorus" Innocence""
inodorus"
lemoinei and varieties"
microphyllus"
monstrosus" "Mont Blanc"if 64 Norma"" 64 Pavillon Blanc""
pubescens"
purpurascens"
splendens"
zeyhei-iPyracantha coccinea lalandi
’
Rhododendron Album Elegans"66 66 Grandiflorum"66
arborescens
Robinia B’iscosa
Rosa alba
Rosaarvensis"
canina..
centifolia
" damascena..
davidi .
..
eglanteria"
g’a II ica., helen8e
jacksoni6
micrantha4
moyesi.. multiflora" " 6
cathayensis"
virginiana..
webbiana
Rubus allegheniensisSambucus nigraSpiraea veitchi
"
watsoniana
Stephanandra incisaSymphoricarpos albus laevigatusSyringa amurensis
ft t < .." "
japonica..
pekinensisTilia platyphyllosViburnum acerifolium
66
molle66
pubescensWeigela "Congo"
4 1 "Eve Rathke"Zenobia pulverulenta
Late June
Acanthopanax sieboldianusActinidia polygamaAilanthus altissima
Ceanothus pallidus roseusCornus m8crophyllaCotoneaster salicifolia
Deutzia myriantha..
scabra plena..
staminea
55 ~ ]
Diervilla sessilifolia
Dorcynium hirsutumGenista anglicaIlex crenata
Indigofera incarnata albaItea virginicaLavandula officinalis
Lonicera henryi1’Itiladelphus "Belle Etoile"
"
burkwoodi" "Enchantment""
virginalis and varietiesRhododendron maximum
Rhus typhinaRosa multibracteata
Sambucus canadensis
Schizophragma hydrangeoidesSorbaria sorbifolia
Spiraea b~lliardt"
bumalda and varieties"
douglasi"
japonica"
latifolia"
margaritae"
menziesi"
pyramidata"
tomentosa"
virginianaStephanandra tanakaeTripterygium regeli
Early July
Buddleia japonicaCallicarpa dichotoma
"
japonicaCytisus nigricansHolodiscus discolor
Hydrangea arborescens"
grandifloraHypericum kalmianum
"
patulum henryiLycium species
Maackia amurensis
Marsdenia erecta
Rhododendron viscosum
Rhus glabraRosa setigeraRubus odoratus
Spiraea salicifoliaStewartia koreana
"
pseudo-camelliaTilia euchlora
((
petiolarisC("
tomentosa
Viburnum setigerum aurantiacum
Mid-July
Aesculus parvifloraAlbizzia julibrissin roseaAmorpha brachycarpa
(("
canescens
Ampelopsis aconitifolia((
cordata
Berberis aggregataCampsis radicansClematis jackmaniCyrilla racemifloraDiervilla lonicera
Hydrangea cinerea"
paniculata praecox((
quercifolia((
radiata" ."
serrata
Hypericum arnoldianum((
densiflorum((
frondosum
Koelreuteria paniculataLigustrum quihouiLonicera heckrotti
(( ,19
sempervirensRosa wichuraiana
Securinega sufl~ruticosaStewartia ovata
Symphoricarpos chenaulti
56
Symphoricarpos orbiculatusTamarix odessana
"
pentandraYucca filamentosa
Late July
Acanthopanax senticosusAbelia schumanni
Ampelopsis brevipedunculataAralia spinosaBuddleia albiflora
Calluna vulgaris and varieties
Cephalanthus occidentalisClethra acuminata
" alnifolia
" 6
barbinervis
Hypericum prolificumKalopanax pictusLespedeza bicolorNandina domestica
Oxydendrum arboreumSorbaria arborea
August
Abelia grandifloraAralia chinensis"
elata
Buddleia davidi varieties
Caryopteris incanaClematis virginianaClematis vitalba
Clerodendron trichotomum
Hibiscus syriacus varieties
Hydrangea macrophy-lla"
paniculata«
66 grandifloraHypericum dawsonianumLagerstroemia indicaLespedeza cyrtobotryaPolygonum auberti
’ Rhus copallinaSophora japonicaVitex agnus-castus«
negundo incisa
SeptemberBaccharis halimifolia
Clematis paniculataElsholtzia stauntoni
Franklinia alatamaha
October
Hamamelis virginianaLespedeza japonica
DONALD V~·YMAN