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''Sabal'' 'Birmingham' is a seed-propagated selection of palmetto (Arecaceae, genus ''
Sabal ''Sabal'' is a genus of New World palms (or fan-palms). Currently, there are 17 recognized species of ''Sabal'', including one hybrid species. Distribution The species are native to the subtropical and tropical regions of the Americas, from ...
''), of unknown origin and widely thought to be a
hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two diff ...
of
Sabal palmetto ''Sabal palmetto'' (, ''Help:Pronunciation respelling key, SAY-bəl''), also known as cabbage palm, cabbage palmetto, sabal palm, blue palmetto, Carolina palmetto, common palmetto, Garfield's tree, and swamp cabbage, is one of 15 species of Saba ...
with a yet-unidentified species. It is widely known for its extreme cold hardiness and its slow growth compared to other palmetto species.


History

The origin of ''Sabal'' 'Birmingham' is shrouded in mystery. The plant was first identified with a large palmetto that grew in the garden of Eva Alexander in
Birmingham, Alabama Birmingham ( ) is a city in the north central region of Alabama, United States. It is the county seat of Jefferson County, Alabama, Jefferson County. The population was 200,733 at the 2020 United States census, 2020 census, making it the List ...
(hence the name), which survived many freezes below , including at least one below . One even survived -11 degrees F in Tulsa, OK. Speculation indicates the seed source for this particular palm was somewhere in
California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...
. After Alexander's death in 1976, her property on Graymont Avenue was re-purposed for a church, and the tree was moved to the Birmingham Botanical Gardens. It remained there until it died in the mid 1980s. Before its demise, Bob McCartney of Woodlander's Nursery collected seed from the tree and began germinating seedlings, which have kept this particular species going. Specimens are now found as far away as
Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
,
Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
, and southern
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.


Description

''Sabal'' 'Birmingham' grows up to in height, with a trunk up to diameter. Like ''
Sabal palmetto ''Sabal palmetto'' (, ''Help:Pronunciation respelling key, SAY-bəl''), also known as cabbage palm, cabbage palmetto, sabal palm, blue palmetto, Carolina palmetto, common palmetto, Garfield's tree, and swamp cabbage, is one of 15 species of Saba ...
'', it is a distinct
fan palm Fan palm as a descriptive term can refer to any of several different kinds of Arecaceae, palms (Arecaceae) in various Genus, genera with leaves that are palmately lobed (rather than pinnately compound). Most are members of the subfamily Coryphoide ...
(Arecaceae tribe Corypheae), with a bare
petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...
which extends as a center spine or midrib, (costa) 1/2 to 2/3 the length into a rounded, costapalmate fan of numerous leaflets. A costapalmate leaf has a definite costa (midrib) unlike the typical palmate or fan leaf, but the leaflets are arranged radially like in a palmate leaf. All costapalmate leaves are markedly recurved or arched backwards. Each leaf is long, with 40-60 leaflets up to long. It was originally speculated that Sabal birmingham was a hybrid between ''Sabal palmetto'' and '' Sabal mexicana'', however its slow growth rate and increased cold hardiness point more toward a hybrid between ''Sabal palmetto'' and ''
Sabal minor ''Sabal minor'', commonly known as the dwarf palmetto, is a small species of Arecaceae, palm. It is native to the deep southeastern and south-central United States and northeastern Mexico. It is naturally found in a diversity of habitats, includi ...
'', both of which are native to
Alabama Alabama ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South, Deep Southern regions of the United States. It borders Tennessee to the north, Georgia (U.S. state), Georgia to the east, Florida and the Gu ...
.


Cultivation and uses

This palm is in great demand in areas where ''Sabal palmetto'' is only marginally hardy because of its lower protection needs. Well-established specimens of ''Sabal'' 'Birmingham' are hardy in USDA Zone 7, while ''Sabal palmetto'' needs winter protection and near-perfect siting to be successfully grown in any zone colder than Zone 8. Established ''Sabal'' 'Birmingham' are grown in or near
Atlanta, GA Atlanta ( ) is the capital and most populous city in the U.S. state of Georgia. It is the seat of Fulton County and extends into neighboring DeKalb County. With a population of 520,070 (2024 estimate) living within the city limits, At ...
,
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, New Bern, NC,
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,
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,
Washington, DC Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and Federal district of the United States, federal district of the United States. The city is on the Potomac River, across from ...
,
Baltimore, MD Baltimore is the most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 census and estimated at 568,271 in 2024, it is the 30th-most populous U.S. city. The Baltimore metropolitan area is the 20th-larges ...
and Toms River, NJ


See also

* List of hardy palms


References

{{reflist Ornamental plant cultivars
Birmingham Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...