86 



EVERYTHING FOR THE GARDEN— Flower Seeds 



A Great Advance on Old Varieties 



Henderson's "Mount Vernon" 

 Collection of Six Giant Snapdragons 



Shown in colors on the back cover 



The efforts of a number of plant hybridizers, for almost a quarter of a 

 century, have been rewarded with wonderful results in the development 

 of the Antirrhinum or Snapdragon. 



For a number of years, we offered an excellent strain of Snapdragons 

 known as Antirrhinum mains grandiflorum. This strain on account 

 of its large flowers produced on long spikes, was in a great measure 

 instrumental in bringing the Snapdragons into popular favor. 



We now offer a new type of Snapdragon that represents the great 

 advancement of this beautiful flower in our Mount Vernon Collection. 

 The flowers of this type average about twice the size of those previously 

 offered, and under favorable conditions will produce well set spikes of 

 flowers about two feet long. 



The continuous-blooming qualities of the Snapdragons, their ease of 

 culture and pure, bright colors, entitle them to a permanent place in 

 all gardens. Although perennials in the South, they do splendidly when 

 grown as annuals in the North, spring sown seed produces flowering 

 plants by July, which continue to bloom in increasing profusion until 

 frost. When planted in beds the plants should be placed 9 inches 

 apart each way, pinching out the tops, and although this delays the 

 beginning of flowering it forces the plants to branch low and ultimately 

 gives better results. When grown individually it is advisable to stake the 

 plants on account of the weight of the large spikes of bloom. (See color 

 plate on the back coper.) 

 1123 Canary Bird. Pure soft canary yellow. 



(Sec color plate No. 5.) Pkt. 2Sc. 



1125 Cerberus. Rich carmine red. (See color plate No. 3.) .. Pkt. 25c. 



1127 Defiance. Old gold color. (See color plate No. 4.) Pkt. 25c. 



1129 Purple King. Bright purplish red. 



(See color plate No. 6.) Pkt. 2Sc. 



1133 Snow flake. Pure white, yellow throat. 



(See color plate No. 2.) Pkt. 25c. 



1136 The Rose. Bright rose pink. (See color plate No. 1.) . . Pkt. 25c. 



1140 Mixed. Choicest varieties Pkt. 25c. 



1141 Collection. One packet each of the above six separate 



colors $1.00 



Pot-Grown Plants of Giant Snapdragon 



We can furnish pot-grown plants of Giant Snapdragon ready 

 April 15th. Price ISc each; $1.50 per doz. For full list of pot- 

 grown plants, see page 161. 



Henderson's 



Rock Garden Collection 



Rock Gardens are becoming popular, because this phase of gardening 

 is so universal in its appeal. 



The wealthy can have rock gardens acres in extent, and suburban dwellers 

 can put to good use the smaller areas at their disposal and still have charming 

 and interesting gardens. 



The charm of rock gardening lies mainly in the culture of Rock Plants, 

 which are usually classed as Alpine plants: but that does not mean that 

 all were originally found on the Alps Mountains; as many now in cultiva- 

 tion were obtained from other countries. Besides the rock plants there 

 are many low growing annuals eminently suitable which we list below. 



Rock Gardens may be divided roughly into two classes; those made 

 out on the open or flat ground, and those formed by utilizing a bank or 

 terrace. If the first plan is decided upon, mark out the site with a spade, 

 and be sure to have it irregular, with plenty of bays in it to afford different 

 aspects for the plants as, although most prefer direct sunlight, there are 

 others that thrive best in partial shade. This done, excavate the site to 

 a depth of three feet, throwing the earth to one side. Then fill the space dug 

 out with stones, shale, gravel, or any loose material, to the former level, 

 and then replace the earth excavated and add plenty of new soil until the 

 mound is the required height. Let it settle for a week or so and then place 

 the rocks in position on the soil mound. If the site of 4he garden is already 

 well drained, then the excavating may be dispensed with. Choose rocks of 

 various sizes, some of them as large as can be transported, placing the larger 

 ones at the bottom and build up. The idea is to place them so they look 

 as if thrown there by some great avalanche of the past and partly buried 

 in the ground. 



There is great scope for the imagination in laying out a rock garden and 

 it will help the amateur considerably to study some natural rock formation. 

 If a bank or terrace already existing is utilized, loosen it up with a pickaxe 

 and add more soil Place the stones as previously recommended. 



There are three Don'ts that must be kept in mind. Don't use too many 

 stones. Don't lay the stones regularly, and Don't forget drainage. 



Preparations for a Rock Garden must be made ahead, if all the plants 

 used are perennials which will not bloom the first year. Seeds should be 

 planted outdoors on the rock garden in the places they are to grow early 

 in spring and up to July 15th. ' (See illustration.) 



LIST OF PERENNIALS FOR A ROCK GARDEN 



1057 Alyssum Saxatile Compacta Pkt. 15c. 



"Basket of Gold" hardy plant, large flowers, pure yellow, 9 in. high. 

 1045 Atfrostemma Coronaria 



"Rose Campion." Mixed Colors Pkt. 15c. 



1173 Arabis Alpina Pkt. ISc. 



A very useful, hardy plant for rockeries; pure white 

 flowers. Height 6 inches. 

 1478 Aubretia Hybrids Mixed Pkt. 2Sc. 



A lovely mauve spring blooming plant; produces great 

 masses of bloom. Hardy and easily grown. 

 1632 Campanula Persicifolla Blue Pkt. 15c. 



"Peach-leaved bell-flower," large blossoms of blue or 

 white 2 to 3 feet high. 

 1 704 Candytuft Gibraltica Pkt. 15c. 



Blooms early, hardy, large flowers red and rose-white 



12 to 18 inches high. 

 1708 Candytuft Sempervirens Pkt. 25c. 



Completely covered with flowers in spring. 



1 858 Cerastium Tomentosum Pkt. 15c. 



"Snow in Summer" of sprawling habit, white leaves and 

 white flowers. 



2 03 O Cowslip Pkt. 15c. 



Spring flowering, hardy, bears variously colored clusters • 

 of fragrant flowers. 



2084 Delphinium Blue Butterfly Pkt. ISc. 



Beautiful blue variety of compact growth, blooms the first 

 year if sown early. Height 18 in. 



2288 Geum Mrs. Bradshaw Pkt. 25c. 



A large double strain, bears brilliant crimson-scarlet 

 flowers. Height 2 feet. 



2405 Huechera. Sanguinea or Alum Boot Pkt. 25c. 



Flowers are a beautiful red. Bloom all summer. Height 

 2 feet. 



2 854 M> osi>( is Pulustris Pkt 10c. 



The popular old-fashioned blue Forget-me-not. 



3676 Sedum Acre Stone Crop Pkt 25c. 



No Rockery' is complete without this plant. Perennial. 



3636 Saxifraiia Mixed Colors Pkt 25c. 



Known as "Rockfoil." mossy leaves invaluable for rock- 

 eries, stone walls, etc., etc. 



HENDERSON'S COLLECTION OF FLOWERS FOR ROCK GARDENS 

 4761 Collection of 1 packet each of the 15 varieties $2.50 postpaid 



LIST OF ANNUALS FOR A ROCK GARDEN 



The Alpine plants are really the true rock plants, but many annuals are 

 needed to complete a rock garden. So in answer to many inquiries we. 

 suggest the following varieties: 



Ageratum Page 98 Dianthus .... Page 109 



Alyssum Page 98 Godetia Page 111 



Candytuft .•-. Page 103 Lobelia Page 1 16 



Calandrina...Page 102 Portulaca. . . .Page 126 



See also summer flowering Bulbs, pages 142 and 143 



Phlox Page 121 



Verbena Page 132 



Zinnia Lilliput . Page 133 



On Page 201 we offer "A SIMPLE GUIDE TO ROCK GARDENING," (illustrated) by Sir James L. Cotter. 



giving full directions. Price postpaid $1.00 





