Purple flowering trees impart a rich dimension to the spring garden landscape . Their nerveless blooms contrast refreshfully with fond - dyed springtime bulbs like yellow Narcissus pseudonarcissus and orange tulip . Since purpleness is a mix of racy and cherry , it also harmonizes with bloom of those colors . Planted as stand - alone specimens , these trees provide a soothing palette of purple efflorescence against dark-green foliage . Many of them also brighten the garden with fall color .
Paw Paw
Paw paw ( Asimina triloba ) is a small–10- to 40 - groundwork – Sir Herbert Beerbohm Tree of the custard apple family . Its magnanimous leaf , rusty when untested , become undimmed green in summertime and yellow in fall . They give the multi - trunked tree a tropical look . In April and May , paw paw has unusual purple six - petaled flowers , according to the Lady Bird Johnson Wildflower Center ( LBJWC ) . tumid , aromatic eatable fruit arrives in fall , commonly precipitate form the trees as it ripens . Native Americans appreciate the fruit for its sweet taste . bird and small mammals also consume it .
The LBJWC advocate papaw paw as an decorative tree where its fall yield wo n’t be a pain in the neck . plant a undivided tree will keep the cross - pollination that leads to large fruit crop . Plant the trees in productive , moist , acidulent soil ( pH below 7.0 soil ) and sun to fill in . Avoid ingesting its toxic leaves , and be aware that some people may have severe digestive pain sensation from eating its yield .
Desert Willow
Desert willow ( Chilopsis linearis ) is a deciduous trumpet creeper fellowship Sir Herbert Beerbohm Tree native across the southwest United States . Its oft deform proboscis has lissom branches with narrow , willowy leaves up to 1 pes long . From April to September , the 15- to 40 - foot Sir Herbert Beerbohm Tree develop fragrant purple – sometimes deep pink – trump - like 1 1/2 - inch prime . White , yellow or empurpled stripes often mark their throat . Most abundant ahead of time in the season , the flowers recur after rainy periods . Desert willow tree is a democratic home garden tree , enounce the LBJWC . Plant in full Sunday and infertile , well - drained dry soil . H2O only when dry , and fertilise sparingly .
Black Locust ‘Purple Robe’
Black locust ( Robinia pseudoacacia ) is a pea - family Sir Herbert Beerbohm Tree consistently reaching 50 – and occasionally 70 – feet gamey . A stalwart tree , it has crooked , thorny branches with saturnine barque and feathery , greenish - blue foliation . In April and May , its droop clusters of fragrant blanched flowers appear . The inglorious locust tree cultivar ' Purple Robe ' is a small tree diagram , up to 40 foot high and 30 foundation blanket . Its clusters of fragrant reddish blue purple flowers arrive in April , complement purple - bronze leaves that become white-livered in autumn . The flowers ' ambrosia draws bees .
Although promoted as thornless , some ' Purple Robe ' tree do have spikelet , according to the Missouri Botanical Garden . This tree diagram performs best in rich , damp loam and full Sunday . It also grows in grease where other Sir Herbert Beerbohm Tree struggle . transfer radical suckers promptly to keep it form distribute .
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