356 THE COMPLETE GARDEN 



Allee, open: 



A way framed on either side by symmetrical rows of closely planted 

 trees or tall shrubs (of a height not less than twice the width between 

 rows), and so maintained that either side presents a continuous vertical 

 wall of close-growing foliage. 



Allee, pleached: 



A way framed on either side by symmetrical rows of closely planted 

 trees or shrubs, so maintained that the branches of the continuous 

 walls of close-growing foliage arch and interweave across the top of 

 the way, at a height of not less than seven or eight feet. 



Annuals : 



Plants which develop from seeds each year, mature, produce 

 ripened seed, and die during the same growing season. 



Alpine Plants : 



Plants adapted to living in exposed situations but requiring a constant 

 seepage of cool water through the soil surrounding their roots. Alpine 

 plants are not drought-resisting. 



Anthracnose: 



A plant disease caused by a parasitic fungus of one definite class 

 (melanconiae) . 



Arborescent Shrubs: 



Those plants on the borderline between shrubs and trees. 



Ball: 



In transplanting work it is the mass of earth containing the roots of a 

 plant, and it is transplanted with the plant to its new location. 



Ball-and-Burlap : 



The process of covering a ball of earth, containing the roots of a plant, 

 with burlap or other bagging so that the plant may be safely transported 

 a considerable distance without losing the earth from about its roots. 



Bedding Plants: 



Herbaceous plants selected for the purpose of producing a solid ground 

 cover of flowers or foliage as a part of a definite design in a refined 

 garden or lawn development. 



Bell-glass : 



A bell-shaped glass used to cover small plants growing in the open, as 

 a protection from wind and rain and frequent temperature changes. 



