PROPAGATION BY INARCHING. 57 



ditions for callusing and even starting roots while the tops 

 of the cuttings in the colder soil below are dormant. 



When the upturned cuttings begin to show roots starting 

 quite freely the time has come for planting, which is often 

 as late as early June. As taken out, place the cuttings in 

 water, and in planting take them from a pail of water in 

 placing, and after placing cover at once, firming the soil at 

 the base (50). In planting, the rootlets that have started 

 are usually broken off, but the conditions are favorable for 

 speedy emission of roots before the top starts. 



Several other species not easy to root from cuttings are 

 propagated in this way, such as Populus Bolleana, hack- 

 berry, mulberry, and plum. Instead of planting in trench 

 some growers stick the cuttings in well-prepared ground. 



61. Cuttings Kept in the Cellar. A few valuable shrubs 

 will not bear propagation in the ordinary ways. One of 

 these is the Amur Tamarix. The successful practice has 

 been to make the cuttings late in fall, tie in bundles with 

 the bases evened, and set the bundles on a bed of sphag- 

 num moss in the cellar. It is not difficult to keep the 

 moss wet. During the winter the process of callusing and 

 rooting goes on and in early spring they are ready to set 

 in nursery. In a warm and quite moist cellar the writer 

 has prepared cuttings of Delaware grape, Rosa rugosa, and 

 some cherries and plums, for nursery planting in this way. 

 A dirt-covered cave or cellar not heated by a drying heat- 

 ing-plant are needed for this interesting system of propa- 

 gation. 



62. Immature-growth Cuttings. In propagating by 

 cuttings of growing shoots cut from growing branches of 

 herbaceous plants, or the tip growth of woody plants, we 

 are dealing with live, growing vegetation suddenly 

 deprived of the moisture, circulation, and nutriment of 

 the parent plant. The ripe wood-cutting has its supply 



