BLOOMING DATES OF PERENNIALS 3 



The plants are listed in t-hree sections in the order of their appearance of bloom 

 from day to day: Spring (April-Ma^'-June); Summer (July-August); and Fall 

 (September-October) . 



Scientific names are given in italics, with stress on the proper syllable of the 

 Latin name, while common and varietal names^ are given in boldface. Syn- 

 onyms are indicated on the plates and in the index by parentheses which im- 

 mediately follow a genus, species, or varietal name. Such synonyms are given 

 either to aid in identification in instances when the accepted name has recently 

 been changed, or because the plant may appear in nursery catalog lists under 

 either name. The words "Horticultural variety" have been shortened to "Hort. 

 var." 



Color designations have been made as simple as possible. In such descriptions 

 as, for example, violet-blue, the second word (in boldface) represents the dom- 

 inant color of the flower, while the modifying color tone preceding aids in giving 

 a more exact description. All blooms have been checked against "Color Stand- 

 ards and Color Ncmenclature" by Robert Ridgway. 



Appreciative acknowledgement is made to Harlan P. Kelsey for the privilege 

 of checking nomenclature with the proof sheets of the 1942 edition of "Stand- 

 ardized Plant Names" and for h's constructive criticism; to Winthrop Thurlow 

 for suggestions and assistance in the selection of the peonies for the bulletin; 

 to Howard and Clifford Corliss for checking the lists of garden phlox; and to 

 other members of the Massachusetts Nurserymen's Association who have co- 

 operated so generously. 



Suggestions for a Succession of Perennial Bloom from April to October 



For a continuation of bloom throughout the season, it is essential first to know 

 fairly definitely when each plant can be depended upon for its flowering period. 

 Secondly, for an eff^ective floral display each month, it is obviously necessary that 

 an equal garden area be reserved for the plants which are to furnish the bloom 

 for each of the months of the season. 



Perennials have probably been selected more for their individual appeal than 

 for a strict continuation of bloom from spring to fall. Were the average garden 

 to be checked over from this point of view, it is probable that the area given over 

 to June flowering plants would prove greater than that given to those blooming 

 in May, July, August, September, and October combined. This condition can 

 be bettered by selecting a few basic plants for flowering each month. After this 

 has been done, elimination of the only partially successful, and restriction of the 

 area occupied by June bloomers, will provide space for the inclusion of material 

 needed for other periods. Best results will be gained by the use of such material 

 as will provide bloom for intervals of every two weeks. 



'The 1942 edition ot Standardized Plant Names was used as reference for stress and approved 

 common and scientific names. Varietal names of irises are given in the lists as in the "Alpha- 

 betical Iris Check List" (1939 edition) of the American Iris Society. 



