Helena, Montana. 
HARDY PERENNIALS AND ALPINES 31 
Our Hardy Rock Garden Plants 
How to Make a Rock Garden 
The rock garden should be constructed in a spot 
that is subject to full light and to good aeration. 
Any natural slope in the ground can also be used to 
good advantage. Take advantage of any natural out¬ 
cropping or rock on your grounds. 
Rocks will usually be gathered from the nearest 
and most easily accessible source. Weatherworn rocks 
produce a pretty and natural effect, and on rather 
sharp sloping ledges the use of porous and water¬ 
holding rocks is much in order because it is in these 
positions that the conservation of moisture is a large 
factor. Go to both extremes in choosing rock sizes 
as too many rocks of either a large or small size tend 
to make the effect unnatural. 
A good well drained garden loam is fine for a ma¬ 
jority of rock garden plants, a soil made up of one- 
half loam as free from clay as possible, one-quarter 
leaf mold and one-quarter sand, is ideal. 
The soil should be thoroughly prepared first and 
then the existing grades and the desired contours 
should be laid out in proportion. The bottom rocks 
should be placed first and there should be more plant 
surface than there are rocks in the finished effect. 
Anchor the rocks firmly by thorough tamping. Ar¬ 
range rocks on slopes so that as much erosion by 
water is checked as possible and so that there will 
be plenty of light and air for plants that are planted 
on a slope. 
The best time to plant is in the Spring, although many of the hardy rock plants can be trans¬ 
planted equally as successfully in the Fall under our Montana conditions. If you are in doubt as to 
which plants to use for Fall planting just drop u s a line and we shall be glad to advise you. Any 
of the plants may be set out in the Spring. 
We are ready to help you at any time with your rock garden ventures. Our 45 years’ experience 
of growing and selection under conditions found in Montana and the Northwest gives you something 
no other firm can offer you. Following is a list of rock garden plants which are adaptable to condi¬ 
tions in Montana and the Northwest and for complete descriptions turn back through the Perennial sec¬ 
tion of this Year Book to the pages indicated. 
Beautiful Hock Garden Belonging to Mrs. Hy- 
rum Smith of Anaconda, Montana. Mrs. Smith 
Uses State Nursery Peerless Montana Tested 
Seeds and Our Hardy and Adaptable 
Perennial Plants 
A Model Rock Garden in Our Nursery 
li »» ■ M ". W. M 
! 1 
OUR SPECIAL 
COLLECTION OF 
ROCK GARDEN j 
PLANTS | 
j 12 Different Varieties j 
Strong Pot Plants 
I All Named I 
J Selected by Us i 
I 1 
Delivery Charges 
i Prepaid 
I . ! 
$ 2.10 | 
I | 
— mi nn mi — im—mi nit — Hi — 
Name 
Alyssum Saxatile—Gold Tuft . 
Arabis Alpina—Rock Cress .. 
Arenaria—Caespitosa . . 
Armeria Formosa—Sea Pink . 
Aubretia—Rainbow Rock Cress . 
Campanula Rotundifolia Olympica . 
Cerastium-Tomentosum—Snow in Summer 
Campanula-Carpatica—Harebell . 
Cherianthus—Siberian Wallflower . 
Delphinium—Chinense .-. 
Dianthus—Cheddar Pink . 
Dianthus—Red Montana .... 
Dianthus—Hardy Grenadine . 
Dianthus Plumarius—Clove Pinks . 
Dianthus—Highland Queen . 
Dianthus-Deltoides .-. 
Edelweiss-Alpinum .-.-. 
Ferns—Hardy . 
Geum—Mrs. Bradshaw .-. 
Geum—Lady Stratheden .-. 
Helianthemum—Rock Rose —. 
Heuchera—Coral Bells ---... 
Iberis Sempervirens . 
Iceland Poppy . 
Iris Pumila Cyanea—Dwarf Purple . 
Lysimachia—Creeping Jenny . 
Lily of the Valley . 
Linum—Blue Flax .. 
Description 
Price 
Three 
See Page 
Each 
For 
22 
25c 
65c 
22 
25c 
65c 
22 
30c 
75c 
22 
25c 
65c 
22 
25c 
65c 
23 
30c 
75c 
23 
25c 
65c 
23 
30c 
75c 
23 
25c 
65c 
24 
30c 
75c 
24 
25c 
65c 
24 
30c 
75c 
24 
25c 
65c 
24 
25c 
65c 
24 
25c 
65c 
24 
25c 
65c 
24 
30c 
75c 
25 
35c & 65c 
. 
25 
25c 
65c 
25 
25 c 
65c 
25 
25 c 
65c 
25 
25c 
65c 
25 
25c 
65c 
26 
25c 
65c 
20c 
50c 
25 
25c 
65c 
27 
3 for 25c 
25c 
26 
25c 
65c 
