May. Shrubby New World species
and cultivars eg. Microphylla,greggii, xjamensis, also ‘Cherry Queen’
‘Silas Dyson’ ‘Purple Queen’June All of the above plus
S.blepharophylla and S.buchananii
July All of the above plus S.patens and S. guaranties ‘Blue
Enigma’, S. involucrata S. ‘Silkes Dream’
August All of the above plus S.fulgens, S. ‘Indigo Spires’ S.
‘Black Knight’ (spelled wrong in my list!) S. corrugata
September All of the above plus S. splendens cvs. S. leucantha
October All of the above until frost terminates the more tender
forms
November Shrubby New World Species outdoors. Tender and half-hardy
species will continue the display throughout the winter months if brought
into a conservatory or frost free greenhouse.
December Conservatory/glasshouse. S.leucantha. S. corrugata.
S. gesneriiflora. S. ‘Waverly’ S.discolor
January As above
February As above plus S. iodantha and S. dorisiana
March As above but not S. dorisiana
April As above but not S. iodantha. Outdoors early cultivars of
shrubby new world species may start flowering eg. S. greggii ‘Peach’, S.
‘Maraschino’, S. ‘Silas Dyson’, S. ‘Cherry Queen’
