70 The Landscape Gardening Book 



young plants only should be transplanted ; the long tap root 



makes this precaution necessary. 

 2 — Tsuga Canadensis: hemlock spruce or common hemlock; 



seventy-five feet high and over; any soil, not too dry; ranks 



next to the white pine and is quite as beautiful in its way; 



easily transplanted. 

 ^—Betula papyrifera: canoe or paper birch; sixty to eighty feet 



high; fairly rich soil, but may be very generally planted; 



very white bark, peeling readily from the tree; used by the 



Indians for their canoes. 

 ^—Populus nigra, Italica: Lombardy poplar; sixty to eighty feet 



or more high ; any soil ; pyramidal trees which are familiar to 



everyone. 

 5 — Sorbus aucuparia: European mountain ash or rowan tree; 



forty feet high, sometimes more ; any soil ; white flowers in 



flat clusters; blossoms in May and Jtine ; brilliant red berries 



follow, which remain all winter; the rowan tree of old folk- 

 lore. 



SHRUBS IN THE SCREEN GROUPS 



I — Forsythia suspensa, Fortunei: weeping or pendulous golden 

 bells; eight feet high; any soil; yellow flowers the length of 

 the branches in early spring ; branches arch and dip to the 

 ground. 



2 — Ligustrum Ibota, Regelianum: variety of privet; six feet high; 

 any soil; low and spreading growth; small lilac-like clusters 

 of white flowers; blossoms in June and July; black berries 

 follow. 



3 — Hibiscus Syriacus, pa:oniflora: rose of Sharon; twelve feet 

 high; any soil; solitary white flowers with red centers, 

 abtmdant; blossoms in August and September. 



