Shrubs 183 



PLUM, FLOWERING (Prunus triloba). Pink flowers, double, appearing just 

 before the leaves. May, June; 4 to 5 feet. Own root plants best 

 by layering. Often grafted on plum as a standard, but then short 



lived. Much like flowering almond, but hairy. , PURPLE (P. 



Pissardi). Grown for its purple foliage. Flowers pale pink, small. 



PRIVET, REGEL'S (Ligustrum Ibota, var. Regelianum). June, July; 8 

 feet, but usually a much smaller plant. The only privet worth 

 growing for its flowers. Borne in pendant tassels on almost horizon- 

 tally spreading branches. Valuable on banks. , GOLDEN 



(var. variegatum). 8 feet. Green and yellow. The quickest 

 growing variegated shrub that can be sheared with impunity. For 

 small edgings or borders to walks and for formal effects. Use 

 judiciously in all cases. Not absolutely hardy, but usually safe. 

 Propagated easily by cuttings. See also HEDGES, p. 189. 



RASPBERRY, FLOWERING (Rubus odoratus). 3 to 5 feet. Strong growing 

 with shreddy bark. Leaves like a large maple. Flowers rose-purple, 

 i inch across. Good for semi-wild effects. Isolate from other 

 colours. 



RHODORA (Azalea Canadensis). Flowers rose-purple in clusters of five 

 to seven. A common native plant throughout Eastern North 

 America. April, May; i to 3 feet. The earliest flowering hardy 

 azalea. Best on loose, peaty soil. 



ROSE OF SHARON, ALTHEA (Hibiscus Syriacus). The best (or maybe 

 the worst) August and late summer flowering tall shrub. 12 feet. 

 Starts to leaf very late in the spring. Valuable for screens. Plant 

 very early in the fall, but best in spring. Flowers on old wood. 

 Variegated form. Many varieties with single and double flowers 

 ranging from white through pink to magenta and purple; also varie- 

 gated foliage; 18 feet. The single white, pure pink and lavender- 

 blue varieties are very lovely, but some harsh hued altheas and 



weigelas are the ugliest shrubs in common cultivation. 



(H. Syriacus , var. fl.-pl.foliis variegatis). 15 feet, leaves green, edged 

 light yellow. Sturdiest late-flowering variegated shrub. Quite hardy, 

 stands shearing. The purple flowers are double and not showy. 



ROSE, RUGOSA (Rosa rugosa). 3 feet. The only rose that makes an 

 ornamental shrub. Dense mass of dark green foliage with large 

 flowers produced at intervals all summer; fragrant. Magenta to 

 pure white. Fruits very ornamental like small apples, orange-yellow. 



