October, 1919 
51 
Boulders and a tiny stream well combined. Notice how 
effectively the large elm tree jocusses the whole effect. 
The foreground flowers are Phlox subulata 
Artificial rock-work must be handled with restraint to 
avoid grotesqueness. Quite fittingly, the entrance to this 
naturalistic grotto is flanked by tall ferns 
rock garden can be made almost anywhere 
upon a property, a natural site often exists and 
needs only to be recognized. 
The ideal situation involves the finding of 
a sequestered and sheltered part of an estate 
where sufficient but not too much sunshine can 
be obtained and in which the plants will be 
protected from the cold 
winds of winter. If it 
is possible, select a 
place with an approach 
through the wild gar¬ 
den or shrubbery. A 
stream should be 
brought through the 
garden if there is not 
already running water. 
A stream greatly in¬ 
creases the variety of 
plants that may be 
grown, affords unlim¬ 
ited possibilities, and 
adds much to the charm 
of the garden. An open 
situation, away from 
the roots of encroaching 
trees or tall shrubbery, 
should be selected, with 
sloping, undulating 
ground and preferably 
facing south or south¬ 
east. There should be 
no trees within fifteen 
yards of the garden, for 
their roots extract the 
plant food from the soil 
and the dripping from 
their branches is detri¬ 
mental to most Alpine 
plants. 
The proper building 
of the garden is of the 
utmost importance, and 
should be done step by step. Remember that 
the object of a rock garden is to grow plants 
and not rocks. It is well to go to Nature and 
study some natural geological formation rather 
than try to build a second Stonehenge. Have 
a definite design from which to work. Aim at 
variety and balance in your plan and avoid 
fussy effects. Place your stones so that the 
finished effect will reproduce in small rock 
gardens some portion of an Alpine scene, and 
in medium sized or large ones the scene in its 
entirety but on a small scale. 
In placing the rocks remember that the ob¬ 
ject is to make the visible ones appear to be 
Iris pumila (dwarf iris): 4"-8", deep violet, blooms 
May. 
Iris pumila dorida: 6", lemon yellow, blooms May. 
Iris pumila formosa: 6"-8", light and dark violet, 
blooms May. 
Linum davum (yellow flax): yellow, blooms 
June-July. 
Linum perenne (perennial flax): 1', blue, blooms June- 
August. 
Lychnis Haageana (shaggy lychnis): 8"-12", red, 
blooms June-August. 
Lysimachia nummularia (moneywort): l"-2", yellow, 
blooms June-July. 
Mertensia virginica (mertensia): 18", blue, blooms 
May-June. 
Myosotis palustris semperflorens (forget-me-not): 8", 
blue, blooms May-September. 
Myosotis alpestris: 3"-8", blue, blooms May-September. 
Nepeta glechoma (ground ivy) : 3", blue, blooms May- 
June. 
Oenothera missouriensis (Missouri evening primrose): 
l'-2', yellow, blooms June-August. 
Oenothera cespitosa (syn. marginata ): 9", white, 
blooms July-September. 
Oenothera fruticosa Youngii: 18", yellow, July-Octo- 
ber. 
Oenothera taraxacifolia (syn. acaulis ): 6"-9", white 
changing to rose, blooms July-October. 
Pachysandra terminalis (spurge) : 6"-9", greenish 
white, blooms May-June. 
Papaver alpinum (Alpine poppy): 6", white, blooms 
May-June. 
Papaver nudicaule (Iceland poppy): 12", white, yel¬ 
low, orange, red, blooms May-October. 
Pentstemon digitalis (beard tongue): 4"-8", white, 
blooms August-October. 
Phlox amoena (hairy phlox): 4"-6", bright rose, 
blooms May-June-July. 
Phlox divaricata (wild sweet william): 12", lilac, 
blooms April-May. 
Phlox divaricata alba: 4"-6", white, blooms May. 
Phlox subulata (moss pink); 4"-6", various pink, 
blooms April-May-June. 
Phlox subulata rosea: 3"-6", rose, blooms April-May. 
Plumbago larpentae (leadwort) : 6"-12", deep blue, 
blooms August-September. 
Podophyllum peltatum (May apple): 6"-8", white, 
blooms April-May. 
Polemonium reptans (Jacob’s ladder): 6"-8", light 
blue, blooms April-May. 
Polygonatum multiflorum (Solomon’s seal): 6"-12", 
greenish white, blooms April-June. 
Primula Sieboldii (primrose) : 6"-12", white and vari¬ 
ous, blooms April-May. 
Primula veris (cowslip) : 6"-9", canary yellow, blooms 
April-May. 
P ulmonaria angustifolia (blue cowslip) : 6"-12", blue, 
blooms May. 
Pulmonaria saccharata (lungwort): l"-2", pink chang¬ 
ing to blue, blooms May-June. 
Ranunculus repens d. pi. (creeping double buttercup): 
6"-12", yellow, blooms May-August. 
Sanguinaria canadensis (bloodroot) : 6", white, blooms 
April-May. 
Santolina incana (lavendar cotton): 18", silvery white 
foliage. 
Saxifraga crassifolia (saxifrage): 12"-l5", pink, blooms 
April-May-June. 
Saxifraga cordifolia: 12", lilac-purple, blooms April- 
May. 
Sedum acre (stonecrop): 2"-3", yellow, blooms May- 
June. 
Sedum spectabile (showy stonecrop) : 18", lavender- 
pink, blooms September-October. 
Sedum stoloniferum: 6", purplish pink, blooms July. 
Silene alpestris (catch-fly) : 4", white, blooms July- 
August. 
Spiraea filipendula (dropwort): 15", white, blooms 
June-July. 
Trillium erectum (wake-robin): 12"-18", purple, blooms 
April-May. 
Trilliu m gran did or urn : 12"-18", white, April-May. 
Trollius europaeus (globe flower): 18"-2', pale yellow, 
blooms May-August. 
Tropaeolum polyphyllum (nasturtium): trailing, orange 
yellow, blooms June-July. 
Veronica Allionii (speedwell) : 6", blue, blooms May- 
June. 
Veronica spicata 1'-18", bright blue, June-July. 
Vinca' minor (periwinkle or myrtle): 6", evergreen. 
Viola cornuta (tufted pansy): 5"-8", various, blooms 
April to frost. 
PLANT MATERIAL FOR THE BOG GARDEN 
Adonis amurensis (pheasant’s eye): 9"-l', yellow 
blooms March-May. 
Adonis pyrenaica: l'-19", golden yellow, blooms 
March-May. 
Adonis vernalis: 9"-l', deep yellow, May-July. 
Andromeda floribunda (andromeda) : 2'-3', white, 
blooms early May. 
Andromeda polyfolia: 1', pink, blooms May. 
Anemone alpina (anemone): 6"-l', white, blooms May. 
Arethusa bulbosa (arethusa) : 8", rose-purple, blooms 
May. 
Azalea amoena (azalea): 12"-15", rosy crimson, 
blooms May. 
Azalea hinodegira: 12", brilliant red, blooms May- 
June. 
Azalea procumbens: 2"-3", pink, blooms April-May. 
Azalea rosaedora: 3"-", salmon, blooms April-May. 
Azalea vaseyi 3"-4", light pink, blooms early May. 
Berberis empetrifolia (barberry) : 18"-2', orange. 
Boltonia latisquama var. nana (false chamomile): 2’, 
pinkish lavender, blooms August-September. 
Calceolaria plantaginea (calceolaria): 12", yellow, 
June-August. 
Caltha palustris (marsh marigold): 1', yellow, blooms 
April-May. 
Caltha monstrosa d. pi.: 12", white, blooms April-May. 
Caltha parnassifolia: 12", yellow, blooms April-May. 
Campanula hederacea (bellflower): 3", bluish purple, 
blooms May-June. 
Convallaria majalis (lily-of-the-valley): 8", white, 
blooms May-June. 
Cypripedium spectabile (lady’s slipper): 8", white, 
blooms May. 
Daphne blagayana: 12", creamy white, blooms April- 
May. 
Daphne cneorum (garland flower): 12", rose, blooms 
May-June. 
Daphne Genkwa: 3', lilac, blooms May-June. 
Daphne mezereum: 18", pink, blooms March. 
Dicentra canadensis: 6", white, blooms May. 
Dodecatheon integrifolia (shooting star): 4"-6", rosy 
crimson, blooms May-June. 
Dodecatheon Jeffreyi: 18", dark rose, blooms May- 
June. 
