Decaisnea fargesii
Plant Expert:
Michael Dirr Decaisnea fargesii
Michael Dirr
Decaisnea fargesii
Decaisnea fargesii (click for large image)
Blue-bean
Common Names:
  • Blue-bean
More Images:
Blue-bean
 
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Origin:

  Western China  

Sun/Water Requirements:

  Partial/Full shade.
Moderate climate.
Dirr says: "water in drought periods"

Climate / Hardiness Zones:

  Zone 6 to Zone 7

Dirr says: "protect from desiccating spring winds. The species dislikes (intensely) heat and drought. Has existed as root hardy, dieback shrub at the Morton Arboretum, Lisle, IL (Zone 5)"

Growth:

  Range: Grows from 10' to 20'.

Flowers:

  Color(s): Green, Yellow
Season(s): Late Spring, Early Summer

Dirr says: "1 to 1 1/4" long flowers occur in 8 to 18" long panicles in May - June. The flowers mesh with the foliage and are not spectacular but certainly handsome on close inspection."  

Foliage:

  Deciduous
Color: Leaves are dark green and bluish-green in the summer.
 

Fruit:

  Color: Blue
Season(s): Late Spring, Early Summer
Dirr says: "2 to 4" long, 3/4" wide, cylindrical, bean-like, pendulous, metallic blue. Ideally plant two seedlings to insure pollination and subsequent fruit set. The fruits are supposedly edible."  

Landscape Value:

  Can be used as a grouping plant.

Dirr says: "almost tropical appearance"
Decaisnea fargesii is hardy in these areas:
Allentown, PAAlpharetta, GAAtlanta, GA
Baltimore, MDBayside, NYBellmore, NY
Bellport, NYBethpage, NYBlue Point, NY
Bohemia, NYBrentwood, NYBrightwaters, NY
Bronxville, NYBrookhaven, NYBrooklyn, MD
Canton, MICasco, MICatonsville, MD
Charlottesville, VAChillicothe, OHCollege Point, NY
Columbus, MICorona, NYCurtis Bay, MD
Decatur, GADetroit, MIDundalk, MD
East Elmhurst, NYEast Greenville, PAEast Texas, PA
Eastchester, NYEaston, PAEcorse, MI
El Paso, TXElkins Park, PAElmhurst, NY
Emmaus, PAEssex, MDFerndale, MI
Flushing, NYForest Hills, NYFort Eustis, VA
Fresh Meadows, NYGlen Burnie, MDGreenlawn, NY
Grosse Pointe, MIGwynn Oak, MDHalethorpe, MD
Hamtramck, MIHarper Woods, MIHarrison Township, MI
Hastings On hudson, NYHighland Park, MIHogansville, GA
Holbrook, NYHoltsville, NYHunt Valley, MD
Huntington Station, NYHuntington, NYIslandia, NY
Jackson Heights, NYJackson, GAJeffersonville, IN
Jenkinsburg, GAJonesboro, GAKingston, PA
Laconia, INLancaster, PALandisburg, PA
Lanesville, INLawn, PALeasburg, NC
Leavenworth, INLebanon, PALemoyne, PA
Lewistown, PALexington, INLexington, NC
Liberty, NCLinwood, NCLithonia, GA
Little Neck, NYLittle York, INLiverpool, PA
Loysville, PALuzerne, PALykens, PA
Macomb, MIMarysville, MIMaspeth, NY
Mcalisterville, PAMelville, NYMemphis, MI
Memphis, TNMiddle River, MDMiddle Village, NY
Milan, MIMonroe, MIMorgantown, WV
Mount Clemens, MI
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