Table 1. Fall Planted, Spring and Early Summer Flowering Bulbs for North America1

Name
Scientific  (Common)
Flower Colors

Flowering
Period and Height
(inches/cm)
Climatic Zone Usage
2
3
4
5
6
7
8
9
10
11
Allium (Ornamental Onions)
                     

aflatunense & Hybrids

Lilac Purple L(25/62.5)
-
M
H
H
H
H
PC
-
-
-

caeruleum (azureum)

Deep Blue VL(20/50)
-
-
M
H
H
H
PC
-
-
-

christophiii (albopilosum)

Silvery Purple VL(20/50)
-
M
H
H
H
H
PC
-
-
-

cowanii

White L(16/40)
-
-
-
-
-
-
M
H
H
-

giganteum

Deep Purple VL(40/100)
-
M
H
H
H
H
PC
-
-
-

karataviense 

 Lilac to Pink L(10/25)
-
M
H
H
H
H
PC
-
-
-

moly (luteum)

Yellow VL(10/25)
-
M
H
H
H
H
PC
-
-
-

neapolitanum

White M(15/37.5)
-
-
-
-
-
M
H
H
H
-

oreophilum (ostrowskianum)

 Red VL(10.25)
-
H
H
H
H
H
PC
-
-
-

sphaerocephalon

 Reddish Purple VL(30/75)
-
M
H
H
H
H
H
PC
-
-
Amaryllis (Hippeastrum)  (Hybrids)
Various colors L(30/75)
-
-
-
-
-
M
M
H
H
-
Anemone
                       

blanda

Rose, Purple, Deep Rose, White E(4/10)
-
M
M
H
H
H
-
-
-
-

coronaria - De Caen

Mixed M(10/25)
-
-
-
-
-
M
M
H
H
-

coronaria - St. Brigid

Mixed M(10/25)
-
-
-
-
-
M
M
H
H
-

fulgens - St. Bavo

Mixed M(10/25)
-
-
-
M
M
M
H
-
-
-
Brodiaea laxa
 (Triteleia laxa) 'Queen Fabiola'		 Lt. Blue VL(18/45)
-
-
-
M
H
H
H
-
-
-
Camassia
                       
 cusickii Blue L(24/60)
-
-
M
H
H
H
PC
-
-
-
 esculenta (quamash) Dark Blue L(24/60)
-
-
M
H
H
H
PC
-
-
-
Chionodoxa spp. Blue E(5/12.5)
-
M
H
H
H
H
-
-
-
-
Convallaria
 (Lily-of-the-Valley)		 White M(8/20)
-
M
M
M
M
H
-
-
-
-
Crocus
                        

chrysanthus

 Blue, White Brownish,Pale Creamy, Bright and Dark Yellows VE(3/7.5)
-
M
M
H
H
H
PC
-
-
-

flavus

Yellow E(3/7.5)
-
M
M
H
H
H
PC
-
-
-

sieberi

Blue VE(3/7.5)
-
M
M
H
H
H
PC
-
-
-

tomasinianus

Purple VE(4/10)
-
M
M
H
H
H
PC
-
-
-

vernus

Purple, White and Striped E(4/10)
-
M
M
H
H
H
PC
-
-
-
Dietes
 (African Iris, Fortnight Lily)		 White, Yellow M(36/90)
-
-
-
-
-
-
M
H
H
-
Eranthis spp. Yellow VE(4/10)
-
M
H
H
H
H
-
-
-
-
Eremurus (Foxtail Lily)
                       

bungei

Yellow VL(30/75)
-
-
M
M
H
H
-
-
-
-

himalaicus

White VL(50/125)
-
-
M
M
H
H
-
-
-
-

robustus

Whitish Pink VL(70/175)
-
-
M
M
H
H
-
-
-
-

Ruiter-hybrids

White to Pink VL(40/100)
-
-
M
M
H
H
-
-
-
-

Shelford-hybrids

 White to Pink VL(45/112.5)
-
-
M
M
H
H
-
-
-
-
Erythronium spp.
 (Trout or Fawn Lily)		 Yellow, White M(10/25)
-
M
H
H
H
H
H
-
-
-
Eucomis Greenish White VL(18/45)
-
-
-
-
-
M
H
H
H
H
Fritillaria
                        

imperialis (Crown Imperials)

 Red, Yellow, Orange-Red M(30/75)
-
M
M
H
H
PC
-
-
-
-

meleagris (Guinea-Hen Flower)

 White, Purple M(8/20)
-
M
M
H
H
H
-
-
-
-
Galanthus spp.(Snowdrops) White VE(4/10)
-
M
H
H
H
H
PC
-
-
-
Hyacinthus (Hyacinths)
 orientalis		 Red, Yellow, White, Blue Lavender E(10/25)
-
-
M
H
H
H
-
-
-
-
Ipheion (Triteleia)
 uniflorum		 Light Blue M(6/15)
-
-
-
-
M
M
H
H
-
-
Iris (English Iris)
 anglica, latffolia, xiphiodes		 Purple, Very Light Blue,Deep Blue VL(20/50)
-
M
M
H
H
H
H
-
-
-
Iris hollandica
 (Dutch Iris)		 Blue, White, Yellow, Purple, Bicolored L(20/50)
-
-
-
-
-
-
M
H
H
-
Iris (Dwarf Irises, Species Irises)
 reticulata, danfordiae, histroides		 Light Yellow, Deep Blue, Deep Purple VE(6/15)
 
-
M
M
H
H
H
PC
-
-
-
Ixia Hybrids Cream, Yellow Purple, Rose VL(16/40)
-
-
-
-
M
M
H
PC
-
-
Ixiolirion pallasii (montanum) Light Purple L(20/50)
-
-
M
M
H
H
PC
-
-
-
Leucojum aestivum
 (Summer snowflake)		 White M(14/35)
-
M
H
H
H
H
H 
H 
- 
- 
Lilium
                        

candidum (Madonna Lily)

White VL(40/100)
-
-
-
M
H
H
H
H
-
-

Asiatic Hybrids

Various colors VL(24-48/60-120)
-
M
M
H
H
H
H
H
-
-

Oriental Hybrids

 Various colors VL(24-72/60-180)
-
-
-
M
H
H
H
H
-
-
Muscari
                       
armeniacum (Grape Hyacinths)
                       

'Blue Spike' (Double form)

Dark Blue M(6/15)
-
M
M
H
H
H
H
-
-
-

'Early Giant' (Single form)

Dark Blue M(6/15)
-
M
M
H
H
H
H
-
-
-

azureum

Light Blue E(6/15)
-
M
M
H
H
H
PC
-
-
-

botryoides album

White M(6/15)
-
M
M
H
H
H
PC
-
-
-

comosum plumosum

 Purple L(6/15)
-
-
-
-
M
H
H
-
-
-
Narcissus
                       

Hardy II cultivars

White, Yellow, Bicolored E/L(8-20/20-50)
-
M
H
H
H
H
H
-
-
-

Hardy I cultivars

White, Yellow, Bicolored E/L(8-12/20-30)
-
-
-
M
H
H
H
H
-
-

Tender III

 White VE(12-18/30-45)
-
-
-
-
-
-
-
M
H
H
Ornithogalum umbellatum White L(5/12.5)
-
M
M
H
H
H
H
-
-
-
Puschkinia libanotica Blusih-white M(5/12.5)
-
M
M
H
H
H
-
-
-
-
Ranunculus Hybrids White, Yellow, Gold, Pink, Red, Mixed M(12-30)
-
-
-
-
-
M
M
H
H
-
Scilla(Endymion)
                       

campanulata (Spanish blue-bells)

 Blue, Pink, White L(12/30)
-
M
H
H
H
H
H
-
-
-

siberica (Siberian Squill)

 Deep Blue E(6/15)
-
M
H
H
H
H
-
-
-
-

tubergeniana

Bluish-white E(5/12.5)
-
M
H
H
H
H
-
-
-
-
Sparaxis Hybrids Various colors VL(10/25)
-
-
-
-
M
M
H
PC
-
-
Tulipa spp. (Tulips) Various colors M/L(6-16/15-40)
-
M
M
H
H
H
H
PC
-
-

1VE = Very Early; E = Early ; M=Medium; L = Late; VL = Very Late