12 
Ferndale Nursery—Askov, Minnesota 
1940 
Rock Wall Plants 
Plants useful for crevices or terraces and flagstone walks. 
Arabis alpina. 
Arenaria. 
Armeria laucheana. 
Aubretia. 
Campanula rotundifolia. 
Caiamintha alpina. 
Cherianthus allioni. 
Dianthus deltoides. 
Gypsophylla repens. 
Houstonia. 
Mazus reptans. 
Mitchella repens. 
Papaver alpina. 
Phlox amoena. 
Phlox subulata. 
Potentilla. 
Sedum acre. 
Silene alpestris. 
Spergula pillifera. 
Thymus. 
Tunica. 
Veronica rupestris, all var. 
Ferns, polipodium. Walking 
leaf. Winged Wood and 
Woodsia Illvensis. 
Native Plants for ooillantl Plantings 
Actea, alba and rubra. 
Arisaema, Jack-in-the-Pulpit. 
Cimicifuga. racemosa. 
Cypripedium, all varieties. 
Bicentra, cucularia. 
Dielytra, exemia. 
Dodecatheon, media. 
Epigea, repens. 
Gaultheria. 
Gentian, andrewsie. 
Habenaria. 
Hepaticas. 
Heuchera, americana. 
Lilium, superbum. 
Mertensia. 
Mitchella, repens. 
Mitella, diphylla. 
Phlox, divaricata. 
Podophyllum. 
Polygonatum. 
Pyrola. 
Sanguinaria, canadense. 
Smilacena, racemosa. 
Tiarella, foam flower. 
Thalictrum. 
Trilliums. 
Uvularia. 
Violets. 
