This group of plants forms one of the most interesting phases of rock garden development. Most of these perennials are either heavy in their texture of foliage, or very dwarf in their habit of growth. They will adapt themselves to cultivation in the congested spaces so often found in garden developments of this kind.

Achillea boule de neige

Ball of Snow *Alyssum argenteum

Silvery Madwort *Alyssum saxatile compactum

Golden Tuft

Anemone pennsylvanica Canadian Windflower

Aquilegia canadensis American Columbine

*Arabis alpina nana compacta Dwarf Alpine Rock Cress *Arenaria montana

Sandwort Campanula carpatica

Carpathian Harebell Centaurea montana Mountain Bluet

*Cerastium tomentosum Snow-in-summer

*Plants especially well adapted for use in crevices of walls and paved areas.

Ceratostigma plumbaginoides Leadwort

Coreopsis verticillata Dwarf Tickseed

Coronilla varia Crown Vetch

Dalibarda repens

Barren Strawberry *Dianthus deltoides Maiden Pink

*Dianthus plumarius Scotch Pink

Dicentra eximia

Wild Bleeding Heart Dodecatheon media

Shooting Star Draba azoides

Aizoon-like Whitlow Grass

Epimedium macranthum Japanese Barrenwort

Erysimum pulchellum

Rock-loving Hedge Mustard Euphorbia corollata

Flowering Spurge

Geranium sanguineum Crane's Bill

Hedera helix conglomerata Small-leaved English Ivy

Helianthemum croceum

Rock Rose Heuchera brizoides

Red Coral-bells

Heuchera sanguinea Coral-bells

Iberis sempervirens

Evergreen Candytuft Iris cristata

Crested Iris Linaria cymbalaria

Kenilworth Ivy

Linaria cymbalaria maxima Large-flowered Kenilworth Ivy

Linum perenne Perennial Flax

Lychnis viscaria splendens

Ragged Robin Mitchella repens

Partridge Berry

Nepeta mussini Catmint

Pachysandra terminalis Japanese Spurge

* Phlox stolonifera

Creeping Phlox Phlox subulata Moss Pink

Primula veris English Cowslip

Ranunculus acris flore pleno Double Buttercup

Saponaria ocymoides Rock Soapwort

Saxifraga cordifolia Saxifrage

*Sedum acre

Mossy Stonecrop

*Sedum album

White Stonecrop *Sedum sexangulare

Dark Green Stonecrop Sedum spectabile

Brilliant Stonecrop Silene maritima

Seaside Campion Silene pennsylvanica

Wild Pink Silene schafta

Autumn Campion Stellaria holostea

Starwort

Stokesia cyanea Stokes' Aster

Thalictrum aquilegifolium Meadow-rue

* Thymus serpyllum languinosus

Downy Thyme

* Tunica saxifraga

Saxifrage-like Tunica Vancouveria hexandra

American Barrenwort Veronica incana

Hoary Speedwell

* Veronica repens

Creeping Speedwell Vinca minor Periwinkle

Viola (various species) Violet

*Plants especially well adapted for use in crevices of walls and paved areas.