292 Landscape Gardening 



as some of the other forms. The varieties differ in size 

 and in the amount of doubling of the flowers, season of 

 flowering and in habit of the plant. Thus this species is 

 well adapted for planting in various situations. H. orgyalis 

 is often grown because of its distinct and attractive foliage. 

 All of the sunflowers are of easy culture, in a great variety 

 of soils, but should have plenty of room, as they are gross 

 feeders, and the advantage of full sun. 



Yucca, Adam's Needle-and-thread Plant {Yucca 

 filamentosa), Fig. i66. — A very beautiful hardy plant for 

 striking effects on the lawn, with its long, upright, narrow 

 evergreen leaves and large panicles of drooping, creamy- 

 white flowers, rising to a height of 4 or 5 feet. It is in- 

 dispensable for the rockery, but is also appropriate in 

 front of evergreens. It thrives even on dry banks where few 

 plants will grow. It is easily propagated by division and 

 should be transplanted in the spring. 



Hardy Spring Flowering Bulbs 



Few plants give more beauty for the labor and expense, 

 than beds or masses of the Dutch or Holland bulbs. The 

 only bulbs adapted for design beds are the hyacinth and 

 tulip, and these should not be planted in the same bed for 

 the finest effects. Care must be taken to select bright 

 contrasting colors in varieties that bloom at the same time 

 and at a uniform height. In making design beds it pays 

 to remove the soil to a depth of 6 inches; then loosen up 

 the lower soil, working in well-rotted manure and ground 

 bone. Level off the surface and if the soil is heavy, add an 

 inch of sand, which drains the water away from the bulbs. 

 The bulbs are set on the sand layer, which enables the 

 planter to properly arrange the design so as to get the bulbs 

 properly spaced. Then carefully replace the top soil so 

 that the bulbs will be covered to a uniform depth. 



