*IBERIS Gibraltarica, Perennial Candytuft. The low clumps 
of evergreen foliage are often a foot across. In late winter 
in California and early spring in cold regions the beauti¬ 
ful broad umbels of rosy lavender flowers completely 
submerge the plant, making a wonderful mass effect. 
Fine not only in the rock garden but for the border and 
to cover hot difficult places. Cult: Sun. Soil, any, even 
rock piles. PI., fall to spring. Self-seed, and seedling 
plant to late spring give long succession. 20 cts. each; 3 
for 45 cts.; per doz. Seeds, pkt. 25 cts. 
ISMENE calathina, Peruvian Daffodil or Basket Flower. 
Bulb and leaves like a narcissus, with stems 1 to 2 feet 
bearing several large basket-shaped flowers of pure 
white. PI., fall to spring in full sun and loamy soil. Lift 
and store in winter in East. 25 cts. each; 3 for 60 cts.; 
$2 per doz. 
LADYSLIPPERS. See Cypripediums, page 12. 
*LAMIUIV1 maculatum. Often we professional gardeners 
overlook a good thing. When I planted Lamium in a 
new rock garden this spring it was simply as a filler, 
but no plant has been more admired and no plant better 
fills a pocket than this one does. The greyish foliage is 
beautifully variegated white with purple mottling and 
the very pretty rosy-purple flowers appear over a long 
season. Curb it when it overgrows, as it may. Either 
sun or shade. 25 cts. each. 
♦LARKSPUR. See Delphinium, pages 17-18-19-32. 
♦♦LAVENDER, Dwarf Munstead. A compact little deep 
green shrub with deep lavender flowers in July. Wonder¬ 
fully effective either in the rock garden or border. Mav 
be trimmed to little round headed trees. Cult: Sun to 
light shade. Soil, any. PI., fall to spring. 35 cts. each; 
3 for $1. Large plants, 75 cts. each. Seeds, pkt. 25 cts. 
Lewisia, Hecknerii 
♦LEUCOCRINUM, Sand Lily. See page 10. 
LEWISIAS 
Lewisias are the New W^.Orld’s finest contribution in lovely 
plants and as a group rank with the most lovely plants 
to be found anywhere. They are splendid rock garden 
plants and are most worthy of having a special section 
of the garden set aside and prepared for them alone. 
Lewisias from Seeds. Lewisia seeds seem to require freez¬ 
ing to insure prompt and good germination. In cold 
regions they may be sown in boxes in fall and the boxes 
be set outside to insure freezing. In warmer regions or 
for spring planting stratified for three weeks at 38 de¬ 
grees they come quite readily. 
•DECIDUOUS LEWISIAS 
Lovely and distinctive West American plants and a real 
acquisition for the alpine and rock garden. All grow in 
early spring, flowering in April to May. The leaves ripen 
as the flowers fade and the roots lie dormant through 
the summer. 
Culture of Deciduous Lewisias. All grow where it is decid¬ 
edly moist during the growing season or where roots may 
reach into moist rock crevices. Drainage should be per¬ 
fect; soil, best a light loam; situation, full sun; mois¬ 
ture, liberal during growing season but may be dried off 
after flowering. The scree is ideal for them. I urge fall 
planting of dormant roots, although growing plants may 
be planted In the spring. 
♦♦Bernardensis. A rare species new to gardens. The narrow 
linear leaves are in little wheels and the flowers are of 
fair size and white. Very rare. 40 cts. each; 3 for $1. 
♦♦Brachycalyx. Without question, this lovely species is one 
of the most notable additions in many years to the really 
fine in rock garden plants. Exceptionally hardy and 
easily grown, it has brought the highest praise from all 
who have seen it. It has many leaved rosettes of lanceolate 
leaves which cling closely to the earth. The stemless 
flowers come In such profusion as to completely hide 
the plant and are 1% to 2 inches across, white, tinted 
pink. See beautiful picture opposite. 40 cts, each; 3 for $1. 
♦♦Nevadensis is a little alpine, with rosette of linear leaves 
and the very many flowers on separate, almost naked 
stems are an inch across, white tinted lavender. Quite 
pretty. 15 cts. each; 3 for 40 cts.; $1.50 per doz. 
♦♦Oppositifolia has linear leaves, broadened at tip, and few 
in number. Stems 6 to 12 Inches high arise erectly and 
bear a number of beautiful white flowers an inch across. 
A most beautiful little species. 15 cts. each; 3 for 40 cts.; 
$1.50 per doz. 
♦♦Rediviva is Bitter Root. Many slender, round leaves, an 
inch or two long, crown the root to make a dense rosette. 
Through these leaves arise many stems, each bearing a 
single flower. The flowers are white to pink, an inch 
and a half across and have the satiny texture of the 
Cactus flower. An admirable species and most effective 
in little raised pockets in the rock garden. See picture, 
page 35. 25 cts. each; 3 for 60 cts.; $2 per doz. Seeds, 
pkt. 25 cts. 
lewisias. Rock Roses. In all the world 
there is not a more beautiful or interesting group of 
rock plants. Varying widely, each variety is distinct, 
beautiful and interesting. All have low rosettes of 
fleshy leaves, pretty and interesting at all seasons, with 
the flowers on slender stems 4 to 15 Inches high, in May- 
June. In the wild they grow into rocky slopes with roots 
horizontal and kept cool by overlaying rocks. I plant 
similarly or in large pots tilted and plunged into a slope. 
Culture of Evergreen Lewisias. They are hardy anywhere 
in the U. S., or Canada, or Europe. This does not mean 
that they can be stuck any place in any garden and 
thrive. They have definite requirements, which we 
give below, and unless these can be met, it is useless to 
plant them. 
Drainage. Must be perfect, so that no excess moisture may 
stand about the roots or in or around the axils of the 
leaves. Prepare deeply, at least one foot. 
Caution. To insure drainage of excess moisture from axils 
of leaves, set crown of plant one inch high and fill 
around it with chip stone, pea gravel or screenings. 
Soils. All like a porous sandy or gritty loam. I find soil must 
be slightly acid. They have little or no humus in the wild 
and I begin to think it undesirable. Silty loam with which 
I mix aluminurn sulphate for acidity, a small amount of 
Vigoro for nutriment, washing in added doses from time 
to time gives me the finest plants and flowers ever ob¬ 
tained. Sandy or gritty loam or half sand and half loam 
with the two elements should be your best possible soil. 
Situation. Evergreen Lewisias are best in light shade In 
cool damp regions plant in full sun. A fine situation is 
one to the East or North of a large rock in rock garden 
Another in pockets in face of a rock wall. 
Time to Plant. Evergreen Lewisias handle easily at any 
time, except that they bruise easily when in bud. I can 
ship the year around, but recommend spring planting 
especially for the East. 
lewisias—C ontinued on next page. 
The above prices are postpaid to your door. 
• Indicates plants well suited to rock gardens. 
•• Indicates plants suited to the rock garden only 
Lewisia are worth any effort to grow them well but are not for amateurs. 
Page 23 
