A well-designed rock garden, with rocks and soil arranged in tiers, offers excellent drainage for small plants that might otherwise struggle with winter and spring moisture.
Position rocks to ensure plants receive maximum sunlight and avoid shading from trees.
Incorporate perennials and small spring bulbs like Crocus, Snowdrop, and Winter Aconite, and consider adding dwarf evergreens to maintain year-round interest in your rock garden. Dwarf Spruce, Yew, and Hemlock are excellent choices and widely available.
Sedum
Sedum is a crucial component of any rock garden. With numerous varieties available and many more possible, sedums offer a wide range of flowering options from early summer to late fall, including colors such as pink, red, white, and yellow. Beyond their flowers, their vibrant and varied foliage makes them an essential addition to any rock garden.
HENS AND CHICKENS
Another important rock garden plant, Sempervivum has fleshy rosettes of foliage with the mother plant surrounded by many small plantlets. These can be detatched and planted in another spot.
FOLIAGE PLANTS
There are many named varieties, all with interesting colourful leaves. They include:
Moss Campion – Silene Schafta
Blue-eyed Grass – Sisyrinchium
Lamb’s Ears – Satchys
Germander – Teuchrium
THYME
Many varieties of Thyme are available. All are flowering plants but are valued more for their foliage ñ in shades of green, plus gray, gold and silver.
VERONICA & VIOLA
Many small Violet-Viola, Veronicas, or Speedwells are available, including creeping varieties.
GRASSES
The smaller, clump-forming (non-invasive) grasses add great charm and quite a different touch in a rock garden. Recommended ñ Blue Fescue varieties, Tuberous Oat Grass, Blue Oat Grass, June Grass (Koeleria), plus grass-like plants such as Sedges (Carex) and Wood Rush (Luzula).
ROCK GARDEN PERENNIALS A-Z
Common Name | Botanical Name |
Wooly Yarrow | Achillea |
Lebanon or Persian Cress | Aethionema |
Bugle Flower | Ajuga |
Lady’s Mantle | Alchemilla |
Ornamental Onion | Allium moly and others |
Basket of Gold | Alyssum |
Pearly Everlasting | Anaphalis |
Rock Jasmine | Androsace |
Pasque Flower | Anemone or Pulsatilla |
Pussy Toes | Antennaria |
Dwarf Columbine | Aquilegia |
Rock Cress | Arabis |
Thrift | Armeria |
Silver Mound | Artemisia |
Silver Brocade | Artemisia |
Alpine Aster | Aster |
Dwarf Astilbe | Astilbe |
Purple Rock Cress | Aubretia |
English Daisy | Bellis |
Heartleaf | Bergenia |
Slipperwort | Calceolaria |
Carpathian Harebell | Campanula |
Dalmation Bellflower | Campanula |
Silver Thistle | Carlina |
Dwarf Coreopsis | Coreopsis |
Dianthus/Pinks | Dianthus |
Dwarf Columbine | Dicentra eximia |
Draba | Draba |
Cushion Spurge | Euphorbia |
Indian Strawberry | Fragaria |
Yellow Bedstraw | Galium |
Creeping Baby’s Breath | Gypsophila |
Rock Rose/Sun Rose | Helianthemum |
Coral Bells | Heuchera |
St. John’s Wort (Dwarf) | Hypericum |
Houstonia | Houstonia |
Hardy Gloxinia | Incarvillea |
Dead Nettle | Lamium |
Golden Flax | Linum flavum |
Catmint | Nepeta |
Prickly Pear | Opuntia |
Dwarf Beardstongue | Penstemon |
Perennial Potentilla | Potentilla |
Rock Soapwort | Saponaria |
Dwarf Blanket Flower | Gaillardia |
True Geranium | Geranium |
Geum | Geum |
Strawflower | Helichrysum |
Hosta (sun tolerant varieties) | Hosta |
Hutchinsia | Hutchinsia |
Candy Tuft | Iberis |
Dwarf Iris | Iris pupils |
Edelweiss | Leontopodium |
Dwarf Feverfew | Matricaria |
Evening Primrose | Oenothera |
Iceland Poppy | Papaver |
Creeping Phlox | Phlox |
Gold Moss | Sagina |