158 



Tall Bearded Iris 



be north and south, so as to give the phmts the greatest 

 exposure to the sun. If the soil is very heav\- it will 

 probably be found beneficial to incorporate with it a 

 considerable proportion of pulverized old mortar or 

 eoarsel}- ground limestone (the kind that farmers spread 

 on their fields). As to use of such materials, see 

 infra, pages 160-161. The elevations should be of such 

 height that when the rhizomes are planted their under 

 surface will be above the level of the adjacent ground 

 even after the soil in the elevation has settled. The 

 top of the ridge should be made crowning, rather 

 than sharp, so that the rhizomes will not be washed 

 out b^' rain (Fis:. XLII). 



tn;.XtII — lr]sr^ — ridge n WTixc;, for ui^aixac.e 



To make such elcA'ations it ma}" be necessar\' to 

 obtain soil from some other place, so that the bottom 

 of the furroAvs will not be lower than the original 

 surface, as it is desirable that water should not stanti 

 in the furrows. Aloist during the groAving season and 

 dr)' the remainder of the year, is the condition that 

 suits the Iris best. 



