Nursery Located At Ruckman Road 85. 
‘ SEMPERVIVUM. Houseleek, (Crassulaceae, Orpine Family) 
_ This family is especially useful for dry walls and tight fissures in exposed rocks, 
for they are all neat cushions or mats of tight little rosettes that can live with hardly 
any soil or moisture. This does not mean they can be left on top of a hot dry rock and 
be expected to florish. They must be planted, but very little soil in shallow cracks or 
crevices 1s enough for their meager requirements. They can also be planted directly in 
open beds in any ordinary garden soil. (pH 6-8) They take full sun or light shade in a 
well drained place. These are about the easiest of plants to grow. Once they are placed 
they can be expected to grow and florish for years to come. They are thoroughly 
hardy and can withstand any amount of draught. 
The names of species, varieties and hybrids are so jumbled up that we have made 
no effort to unscramble them. If the experts cannot do it, nor can we. All those listed 
here are quite distinct from each other and all are charming little rosetted plants to dress 
up the rocks in your garden. 
Courtesy of American Rock Garden Society 
Sempervivums in variety 
Sempervivum arachnoideum. (Cobweb Houseleek) This is the most outstanding and 
the most popular of all. Slow spreading carpets of tight little rosettes covered with 
fine, silky, white wool. It has showy clear pink flowers on 6 inch stems in July. 
Sempervivum arachnoideum minor. A very minute form of the above beauty, The tiny 
white woolly rosettes are never more than % inch in diameter in tight little cushions. 
Because of its size it is quite rare, 
Sempervivum beta. A good hybrid with rosettes about one inch across of sharply 
pointed red leaves. The leaves are outlined with long lashes. Very good winter 
color. Usually it turns green in the growing season, 
Sempervivum calcareum, Large rosettes about 2 inches across, with attractive gray 
leaves tipped with brown. A slow growing cushion former. 
Sempervivum fimbriatum, Spreading cushions of closely set little rosettes of light green 
leaves fringed with short white hairs. Clusters of bright red flowers on 8 inch 
es, stems. 
Sempervivum globiferum. Attractive long, pointed dark green leaves in rosettes like 
tight round balls. It has light straw colored flowers in June and July. The rosettes 
take on a good mahogany color in winter, The new little rosettes are formed on 
thread like stems that are detached at the slightest touch. 
Sempervivum hausmannii. An extremely rare hybrid with lovely globular, soft velvety 
gray rosettes about 1% inches across, Yellow flowers in July. A very slow grow- 
ing kind. . 
