36 MASS. EXPERIMENT STATION BULLETIN 382 



Rubus. Cuttings of Van Fleet raspberry, new shoots taken in May, rooted 

 well in 26 days (127), but some red raspberries are not readily propagated 

 in this way (115). Leaf-bud cuttings of a black raspberry taken in July, 

 made to include an axillary bud and a heel of bark and wood, rooted 100 

 percent in sand (100). This method is successful with some red rasp- 

 berries, not with others (115). Leaf-bud cuttings of several species, taken 

 in July or August before leaves began to mature, rooted in sand in 2 

 weeks or in half the time required for stem cuttings (112). 



Salix, willow. Softwood, summer, cuttings of white willow (44), dwarf 

 willow (105), S. Elacagnos (66), and other species root readily in sand. 

 Rooting of late Jime cuttings of 5". Elaeagnos and early July cuttings of pussy 

 willow was, however, at least hastened by indolebutyric acid, 10 mg./l., 6 

 hr., for the former (83); 5 mg./l., 24 hr., for the latter (57). 



Salvia officinalis, garden sage. Untreated cuttings taken here in October 

 rooted 100 percent in sandy soil in 6 weeks. Taken here in late June, 

 they rooted, in sand, 79 percent in 7 weeks without treatment, 100 percent 

 in 3 weeks after treatment with indolebutyric acid (40 mg./l., 24 hr.). 



Samhucus, elder. Softwood, summer, cuttings of American elder (44), Eu- 

 ropean elder (66), European red elder, and 5". mclanocarpa (116) root well. 

 Cuttings of American elder, whole new shoots about five inches long, 

 root well if taken in spring (127) and that is a good time to take cuttings 

 of the varieties also (51). Sand is a good rooting medium (66, 127), 

 better, at least for some species, than sand-peat (116). 



Sciadopitys (verticillata, umbrella-pine. January cuttings four or five inches 

 long, from trees about seven years old, were treated with indolebutyric 

 acid (20 mg./l., 20 hr.), planted in a mixture of sifted cinders three parts 

 and peat moss one part, and transplanted after three months to sand-peat 

 w^here they rooted 70 percent in 8 months (23). There was no rooting 

 meanwhile of untreated cuttings. 



Sccurinega suffruticosa. Hardwood cuttings taken here in late March, buried 

 in sand at about 50° F. for one month and then planted in soil outdoors, 

 rooted 100 percent in 6 weeks whether or not they were treated. 



Sorbaria sorbifolia. Untreated softwood, summer, cuttings, made with 

 the basal cut at a node, rooted 80 percent in sand at 60° P., less well at 

 70° (116). 



Spirca. Softwood. July, cuttings root readily. There was 80 to 100 per- 

 cent rooting of untreated cuttings of S. Bumalda, S. salicifolia (46), S. Thun- 

 bergii, S. Billiardii (66), 5^. arguta, and S. Vanhouttci (116), but rooting of 

 some species may be at least hastened by treatment. June cuttings of S. 

 Bumalda var. "Anthony Watercr" rooted 100 percent in 4 weeks after treat- 

 ment with indolebutyric acid (10 mg./l., 24 hr.), 55 percent without it 

 (57). Cuttings of S. Vanhouitei rooted 100 percent in 3 weeks after treat- 

 ment for 8 hours with Hormcnlin A (40 B T I units), not at all without 

 it (118). Cuttings of S. arguta (80), S. Vanhouttci (14), and 5*. Billiardii 

 (66) rooted better in sand-peat than in sand. 



Stephanandra. Softwood cuttings are easily rooted without treatment. Taken 

 here in July and August, cuttings of 5*. Tanakac rooted 100 percent in sand 

 in 3 to 4 weeks whether or not they were treated. Cuttings of S. incisa rooted 

 better in sand than in sand-peat (14). 



Stewartia. Cuttings are taken in summer, often in late summer (106). It is 

 English practice to make them with a heel (80, 105). Cuttings of 5". korcana 

 and S. ovata taken here in late July and early August rooted not more than 



