502 LIBERTY AVENUE, PITTSBURGH, PA. 



3 



Rock Gardens 



Rock gardening is perhaps the most fas- 

 cinating phase of gardening. It presents 

 all the problems of larger landscape plant- 

 ings on a small scale and, if well worked 

 out, can be made a source of pleasure from 

 earlv spring until late fall. 



The Rock Garden may be either in full 

 sun or partial shade but it should be locat- 

 ed where it can be easily watered in case 

 of need. 



Remove the soil to a depth of 12 inches 

 saving only the good top soil. Fill in the 

 bottom with 6 to 8 inches of coarse ashes 

 or rubble for drainage. Rocks should be 

 unequal in size and shape and so placed as 

 to leave numerous earth pockets for the 

 plants. Do not place them too symmetric- 

 ally and have at least one high spot. 



Mix the top soil with one-third leaf 

 mould, peat moss or decayed vegetable mat- 

 ter to make it porous and use this mixture 

 for filling in between the rocks. 



Although a perennial Rock Garden is the 

 ultimate goal, we would suggest using an- 

 nuals, with which very pleasing effects may 

 be had. the first year; growing the peren- 

 nials along in a seed bed for transplanting 

 in the fall. 



We have only included the dwarf and 

 medium dwarf varieties in this list al- 

 though quite a few of the taller sorts can 

 be worked in to advantage as background. 



Full descriptions of the varieties listed 

 will be found in the flower seed section. 



Alpine Rock Garden 

 Collection 



An imported collection consisting of 

 twelve of the finest Alpine plants suitable 

 for Rock Gardens. All are perfectly hardy. 



The following are included in this su- 

 perb collection: 

 ANEMOHI! Pulsatilla, 

 ALYSSUM sax. axttrinum. 

 CAMPANULA speciosa. 

 DIANTHUS pungens. 

 IEYNGIUM alpinum. 

 HELIANTHEMUM apenninum. 

 LINUM perenne. 

 MYOSOTTS, B.uth Fischer. 

 PRIMULA japonica. 

 SAFONAEIA ocymoides. 

 SAXIPBAGA declpiens. 

 VIOLA bosniacea. 



Most of these varieties are the rarer sorts 

 which we do not catalog and therefore 

 cannot be supplied separately but only as 

 a collection. Price, $2.50, postpaid. 



Annuals for Rock Gardens 



Pxt. 



613 Alyssxun, Carpet of Snow SO. 10 



1537 Dianthus, Single Japanese Mixed. .10 

 1547 Dianthus, Double Japanese Mixed. .10 

 1640 Eschscholtzia, Single Mixed 10 



1841 Gypsophila elegans alba 10 



1842 Gypsophila elegans rosea 10 



2071 Lobelia, compacta Crystal Palace. .15 

 2210 Mesembryanthemum crystallinum. .10 



2340 Nemophila, Mixed 10 



2502 Phlox, Dwarf Cecily Mixed 10 



2571 Portulaca, Single Mixed 10 



2572 Portulaca, Double Mixed .10 



2680 Sanvitalia procumbens 10 



3070 Verbena, Mixed 10 



Perennials and Biennials 

 for Rock Gardens 



Pkt. 



500 Abronia umbellata SO. 10 



.550 Adlumia cirrhosa (Vine) 15 



562 Adonis vernalis 10 



616 Alyssum saxatLle compactum . . . .10 

 730 Antirrhinum, Half Dwarf Mixed. .10 

 662 Anemone coronaria, St. Brigid ... .15 



741 Aquilegia caerulea 10 



742 Aquilegia canadensis 10 



743 Aquilegia chrysantha 10 



744 Aquilegia, Mrs. Elliott's Long 

 Spurred Hybrids 25 



750 Arabis alpina 10 



1004 Bellis perennis monstrosa, Mixed. .20 



1091 Campanula carpatica, Blue 10 



1092 Campanula carpatica, White 10 



1152 Candytuft (Iberis) sempervirens. .10 

 1280 Cerastium tomentosum 15 



1553 Dianthus plumarius semperflorens. .15 



1554 Dianthus Allwoodi 35 



1761 Geum, Double Crimson 10 



1762 Geum, Mrs. Br ads haw 15 



1900 Heuchera sanguinea 25 



2051 Linaria cymbalaria (Vine) 15 



2062 Li num. perenne, White 10 



2132 Lychnis Haageana 15 



2295 Myosotis palustris semperflorens. .15 



2298 Myosotis alpestris, Mixed 10 



2372 Oenothera missouriensis 10 



2430 Pansy, Tufted Mixed .15 



2431 Pansy, Viola odorata (Violet) . .15 



2521 Platycodon grandiflora, Blue 10 



2522 Platycodon grandiflora alba .10 



2564 Poppy nudicaule, Mixed 10 



2614 Primula vulgaris 15 



2732 Silene Schafta 15 



3074 Verbena venosa 10 



3094 Vinca, Mixed 10 



PLOWEE SEEDS ARE SENT POSTPAID 



