Thunder Bay Master Gardeners
Plant Hardiness generally refers to the degree to which a plant can withstand cold. Hardiness Zones indicate the range of the average minimum temperatures for areas across North America. Thunder Bay is considered to be Zone 3b, with minimum temperatures to be -35o F.
Sun
TallBaptista (False Indigo)
Delphinium (Larkspur)
Echinacea (Coneflower)
Echinops (Globe Thistle)
Eupatorium (Joe Pye Weed)
Monarda ( Bee Balm)
Salvia ( Sage) / Medium
Achillea ( Yarrow)
Campanula ( Peach Leaved Bellflower)
Centaurea ( Cornflower)
Gaillardia ( Blanket Flower)
Hemerocallis ( Daylily)
Iris ( Iris)
Liatris ( Blazing Star) / Short
Alchemilla ( Lady’s Mantle)
Armeria (Thrift)
Artemisia ( Silver Mound)
Aurinia ( Basket of Gold)
Campanula ( Blue Clips)
Dianthus ( Pinks)
Oenothera ( Evening) / Ground
Ajuga ( Bugleweed)
Arabis ( Rock Cress)
Cerastium (Snow in Summer)
Phlox ( Moss Phlox)
Saponaria ( Soapwort)
Sedum ( Sedum)
Thymus ( Creeping Thyme)
Part Shade
TallAconitum ( Monkshood)
Aruncus ( Goat’s Beard)
Cimicifuga ( Bugbane)
Filipendula (Meadowsweet)
Ligularia ( Golden Ray)
Lupinus ( Lupine)
Lychnis ( Campion)
Phlox ( Phlox) / Medium
Aquilegia ( Columbine)
Astible ( False Spirea)
Euphorbia ( Spurge)
Geranium ( Cranesbill)
Polemonium ( Jacob’s Ladder)
Scabiosa ( Pincushion Flower)
Tradescantia
( Spiderwort) / Short
Bergenia ( Bergenia)
Doronicum ( Leopard’s Bane)
Iberis ( Candytuft)
Primula (Primose)
Stachys ( Lamb’s Ear)
Viola (Viola)
Veronica ( Speedwell v Alpina) / Ground
Ajuga ( Bugleweed)
Gallium ( Sweet Woodruff)
Thymus ( Creeping Thyme)
Shade
TallAruncus ( Goat’s Beard)
Cimicifuga ( Bugbane)
Ligularia ( Golden Ray) / Medium
Dicentra ( Bleeding Heart)
Hosta ( Plantain Lily)
Polygonatum
( Solomon’s Seal)
Hardy Ferns / Short
Heuchera ( Coral Bells)
Myosotis ( Forget-me-not)
Pulmonaria ( Lungwort)
Tiarella ( Foam Flower)
Viola ( Viola0 / Ground
Convallaria ( Lily of the Valley)
Lamium ( Dead Nettle)
Lysimachia ( Creeping Jenny)
Sagina ( Irish Moss)