7 
ROCK-PLANTS 
R ock-gardening has a strong appeal to all gardeners because it provides a means of growing an unusually large 
collection of charming plants which have no particular fitness for growing in well-groomed perennial borders. 
- Year after year the rock-garden repays the slight care it requires with increasing interest and charm, affording 
ali-year-round interested enjoyment, whether it be a few square feet in a back yard or an elaborately constructed 
artificial mountain-range. A great many people make the mistake of using unsuitable material in rock-gardens. Annuals 
have no place there, or tender bedding plants. The rock-garden should be a home for permanent perennial plants of 
the types suited to their environment. Not all of the plants which we grow in rock-gardens are necessarily alpine in 
their nature, but the best of them are, and it is well for the gardener to choose those things which are known to thrive 
under the conditions provided by the rock-garden. The list which follows has been carefully selected, and only those 
plants which look well in rock-gardens and enjoy living there are included. 
All Rock-Garden plants, except where noted, 30 cts. each; $3 per doz.; $20 per 100. Not less than 3 of any variety sold 
ACHILLEA tomentosa. Woolly Yarrow. Creeping mats of 
ferny foliage with broad, flat heads of golden yellow flowers 
on 6-inch stems. 
AiTHIONEMA coridifolium. A superb trailer with gray foliage 
and clusters of rosy pink flowers. 35 cts. each; $3.50 per doz. 
AJUGA genevensis. An excellent creeper with bronzy foliage 
and dark blue flowers on 6-inch spikes. 
ALYSSUM saxatile compactum. Splendid tufted plant a foot 
or more high, covered with a mass of golden yellow flowers. 
A. serpyllifolium. A very dwarf variety of trailing habit, with 
innumerable pale yellow flowers. 
ANDROSACE lanuginosa. Bock Jasmine. Charming clusters of 
pale rose flowers set on rosettes of silky foliage. 50 cts. each; 
$5 per doz. 
AQUILEGIA canadensis. Wild Columbine. Very pretty bright 
red and yellow flowers. Excellent in sun or shade. 
ARABIS alpina. Mats of gray-green foliage buried in a snowy 
cloud of pure white flowers. 
ARENARIA montana. An excellent plant for rock-crevices, with 
creeping stems and large greenish white flowers of great beauty. 
ARMERIA Laucheana. A striking rock-garden plant with red 
flowers in clustered heads on 6- to 10-inch stems. 
ASTER, Mauve Cushion. Handsome, very dwarf, compact 
plant covered in autumn with starry pinkish white flowers. 
AUBRIETIA HYBRIDS. Extremely showy, trailing plants 
covered with a mass of brilliant pink, purple, blue, and 
lavender flowers. 35 cts. each; $3.50 per doz. 
CAMPANULA carpatica. Harebell. Makes excellent tufts of 
beautiful foliage and sends up slender stems bearing erect, 
cup-like, bright blue flowers throughout most of the summer. 
C. garganica. Dense tufts of bright, clear, holly-like foliage, 
starred all over in early summer with bright lavender-blue 
flowers. Very charming. 35 cts. each; $3.50 per doz. 
C. muralis (C. Portenschlagiana). A lovely trailing plant with 
drooping bells of bright lavender-blue most of the season. 35 
cts. each; $3.50 per doz. 
C. rotundifolia. The famous Blue Bells of Scotland. Foliage com¬ 
pact. The bright blue bells hang from slender, erect stems. 
DIANTHUS alpinus. A choice rock-garden species making low 
rosettes of bright green foliage with very large bright pink 
flowers. 35 cts. each; $3.50 per doz. 
D. arenarius. Matted creeper with grass-like foliage and pure 
white, very ragged, fragrant flowers. 
D. caesius. Dense, matted creeper with grassy foliage and in¬ 
numerable erect, fragrant flowers in shades of pink and rose. 
D. deltoides. Matted, creeping plants which spread rapidly 
and send up 12-inch stems bearing clusters of vivid pink 
flowers. 
EPIMEDIUM macranthum. Excellent dwarf, half-shrubby 
plants for shady or half-shady places. Foliage very beautiful. 
Flowers are charming miniatures of rare orchids. Colors 
vary from rosy brown, lilac and yellow to white. 
GYPSOPHILA repens. A charming trailing plant with misty 
white or pale pink flowers all summer. 
HELIANTHEMUM macranthum. Dwarf, evergreen shrub 
with large, pure white flowers like tiny white roses. Very 
effective rock-plant. 
WILLIAM C. DUCKHAM, MADISON, N. J. 
HEPATICA triloba. A charming native plant, excellent for 
shady places, with broad, leathery evergreen foliage and 
bright lavender-blue flowers early in spring. 
HEUCHERA sanguinea. Extremely graceful plants for sun or 
semi-shade. The foliage is gathered into a loose tuft; bright 
red flowers, delicately poised on slender 12-inch stems. 
IBERIS gibraltarica. Low, shrubby plants about a foot high, 
smothered in spring with clusters of lilac-colored flowers. 
I. sempervirens. Stunning half-shrubs a foot or more high, 
densely covered in spring with a mass of snow-white flowers. 
IRIS cristata. A very dwarf, early-blooming Iris with exquisitely 
beautiful sky-blue flowers. 
LINARIA alpina. Gray-leaved alpine with innumerable violet 
and blue flowers like miniature snapdragons. 35 cts. each; 
$3.50 per doz. 
NIEREMBERGIA rivularis. White-Cup. A superb ground- 
cover for moist, sunny places, making a dense mat of dark 
green foliage on which sit snow-white cups with yellow centers. 
35 cts. each; $3.50 per doz. 
PAPAVER alpinum. The Alpine Poppy makes little tufts of 
foliage from which, all summer, rise slender stems bearing 
beautiful silky blossoms in shades of cream and yellow. 35 
cts. each; $3.50 per doz. 
PHLOX subulata alba. A lovely, early-flowering, creeping 
plant with mossy foliage and dazzling white flowers. 
P. subulata lilacina. Clear, light lavender-blue flowers. 
P. subulata, Vivid. Gorgeous, bright rose-colored flowers. 
PLUMBAGO Larpentae. Deep blue flowers on 1-foot plants in 
August and September. 
POLEMONIUM reptans. A lovely creeper with beautiful 
foliage and clusters of bright blue flowers. 
PRIMULA veris. Bright golden yellow flowers sometimes tinged 
with brown. For shady places. 35 cts. each; $3.50 per doz. 
SEDUM album. A vigorous, spreading creeper with bronzy 
foliage and clusters of tiny white flowers. 
S. dasyphyllum. Exceedingly dwarf, gray-green plant of great 
beauty. Flowers pinkish white. 35 cts. each; $3.50 per doz. 
S. sexangulare. Very dainty mossy plant with yellow flowers. 
S. Sieboldi. A charming decumbent with flat, gray-green leaves 
edged with pink. Flowers bright rose in November. 
S. spectabile. Bold, fleshy-leaved plants, with broad heads of 
dull rose-colored flowers. Excellent for strong effects. 
SILENE Schafta. Dwarf, leafy plant with erect stems bearing 
bright rose-colored flowers in late summer. 
THYMUS citriodorus. A densely matted creeper with strongly 
lemon-scented foliage. 
T. Serpyllum album. Exceedingly lovely bright green creeper 
studded all over with pearly white flowers. 
T. Serpyllum coccineus. Very dwarf plants with bronzy foliage 
and purplish pink flowers. Especially fine in winter. 
T. Serpyllum lanuginosus. Dense creeper with woolly gray 
foliage tinged with lilac and purple in winter. 
TUNICA Saxifraga. Indestructible rock-plant with tufts of 
grassy foliage and loose, misty sprays of pinkish white flowers. 
VERONICA repens. Low, matted creeper excellent for crevices 
and flagging. Flowers are bright blue, in erect spikes. 
V. Teucrium, Royal Blue. Superb trailer; blue flower-spikes. 
