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A
- New England
September 15th — November 15th
USDA Hardiness Zones: 3, 4, 5
B - Mid-Atalntic Coastal
October 1st - November 30th
USDA Hardiness Zones: 6,7,8
C - Appalachian
September 15th - November 30th
USDA Hardiness Zones: 5, 6
D - South Atlantic Coastal
October 15th - December 15th
USDA Hardiness Zones: 7, 8
E - Great Lakes
September 15th — November 15th
USDA Hardiness Zones: 5, 6, 7
F- East Central
October 1st - November 30th
USDA Hardiness Zones: 5, 6, 7
G - South Central
October 15th - December 15th
USDA Hardiness Zones: 7, 8
H - Tropical
December 1st - January 31st
USDA Hardiness Zones: 10
I
- Gulf Coast
October 1st - December 31st
USDA Hardiness Zones: 8, 9
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J
- Northern Central
September 15th — November 1st
USDA Hardiness Zones: 3, 4, 5
K - Central & Great Plains
September 30th - November 30th
USDA Hardiness Zones: 5, 6
L - Rocky Mountains
September 15th — November 1st
USDA Hardiness Zones: 2, 3, 4
M - Arid West
September 30th - November 30th
USDA Hardiness Zones: 5, 6, 7
N - Northern Pacific Coast
October 1st - December 1st
USDA Hardiness Zones: 8
O
- Southern Pacific Coast
Optimum Planting Time: See Below
USDA Hardiness Zones: 9, 10
Region "O" — Southern Pacific Coast There are two major
fall planting seasons for the Southern Pacific Coast: Plant
Mid-August (or as soon as available) into December Bulbs
native to Mediterranean and other climates, such as: babiana,
sparaxis, tritonia, watsonia, bearded iris, ixia, Oxalis purpurea,
Scilla Peruviana, freesias, the small alliums, etc. Plant
Mid-October through late January Dutch bulbs including
daffodils, dwarf narcissi, rununculus, Anemone coronaria,
Spanish bluebells, muscari (grape hyacinths), lilies, Dutch
iris.
P
- Alaska
September 15th - October 15th
USDA Hardiness Zones: 1, 2, 3, 4, 5, 6, 7
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