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1 Zone Plant Mature Size Time of Bloom Height Width Zone A FORBS Yellow Monkeyflower lutea 24” to 36” 10” to 40” April to July Blue-eyed Grass Sisyrinchium idahoense 12” to 30” 4” to 20” March to July Horsemint Agastache urticifolia 24” to 60” 12 to 24” June to August Rocky Mountain Iris Iris missouriensis 12” to 24” 12” spreading May to June ---PAGE BREAK--- 2 Zone A Wild Mint Mentha arvensis 12” to 24” 12” to 24” spreading July to September Mountain Hollyhock Iliamna rivularis 12” to 36” 12” to 24” June to August Skullcap Scutellaria lateriflora 12” to 24” 12” to 24” June to October GRASSES/GRAMINOIDS All Sedge species All Juncus species SHRUBS & GROUNDCOVER Twinberry Honeysuckle Lonicera involucrata 3’ to 8’ 5’ to 10’ March to August ---PAGE BREAK--- 3 Douglas Spirea Spiraea douglasii 4’ to 10’ 3’ to 5’ June to September Zone B FORBS Wild Chives Allium schoenoprasum 20” 12” to 24” June to August Red Columbine Aquilegia canadensis 12” to 36” 12” to 36” May to August Yellow Mountain-Aven Dryas drummondii 4” to 6” 12” to 23” April to June Alumroot Heuchera cylindrica 18” to 36” 36” to 48” March to August Shooting Star Primula pauciflora 8” to 24” 8” to 12” April to August ---PAGE BREAK--- 4 Zone B Self-heal Prunella vulgaris 4” to 20” 8” to 12” spreading June to August Fringecup Tellima grandiflora 12” Up to 12” March to June SHRUBS & GROUNDCOVER Serviceberry Amelanchier alnifolia 8’ to 20’ 5’ to 10’ April to May Red-osier Dogwood Cornus sericea 6’ to 12’ 6’ May to June Utah Honeysuckle Lonicera utahensis 3’ to 6’ 2’ to 3’ June to July Thimbleberry Rubus parviflorus 4’ to 8’ 8’ April to June ---PAGE BREAK--- 5 Zone B All Strawberry species Fragaria spp. 6” to 10” 36” Spreading June Blue Elderberry Sambucus cerulea 6’ to 24’ 20’ March to September GRASSES/GRAMINOIDS Ticklegrass Agrostis scabra 12” to 24” 10” to 15” March to April Sweetgrass Anthoxanthum hirtum 16” to 36” 12” to 24” May to July Tufted Hairgrass Deschampsia cespitosa 6” to 12” 6” to 12” May to July Slender Hairgrass Deschampsia elongata 6” to 20” 6” to 30” May to September ---PAGE BREAK--- 6 Zone C FORBS Fireweed Chamerion angustifolium 3’ to 5’ 2’ to 3’ June to September Showy Aster Eurybia conspicua 1’ to 2’ 2’ August to October Aspen Fleabane Erigeron speciosus 1’ to 3’ 1’ to 2’ June to October Silky Lupine Lupinus sericea 1’ to 3’ 1’ to 2’ June to August Beebalm Monarda fistulosa 3’ to 6’ 2’ to 3’ May to September Canada Goldenrod Solidago canadensis 3’ to 6’ 4’ to 5’ September to November ---PAGE BREAK--- 7 Zone C SHRUBS & GROUNDCOVER Rocky Mtn. Maple Acer glabrum 10’ to 30’ 10’ to 15’ April to May Kinnikinnick Arctostaphylos uva-ursi 6”to 12” 24’ to 36” Spreading March to June Oregon Grape Berberis repens 3’ 5’ April to June Oceanspray Holodiscus discolor 8’ to 15’ 6’ to 15’ June to July Mock Orange Philadelphus lewisii 2’ to 10’ 2’ to 10’ March to July Mallow Ninebark Physocarpus malvaceus 4’ to 10’ 3’ to 8’ May to July ---PAGE BREAK--- 8 Zone C Mountain Ash Sorbus scopulina 10’ to 15’ 5’ to 10’ June Birch-leaved Spirea Spirea betulifolia 6” to 24” 6” to 24” June to July GRASSES/GRAMINOIDS Prairie Junegrass Koeleria macrantha 6” to 24” 12” to 24” June to July Idaho Fescue Festuca idahoense 1’ to 3’ 6” April to July TREES Paper Birch Betula papyrifera 50’ to 90’ 25’ to 45’ April ---PAGE BREAK--- 9 Zone C River Birch Betula occidentalis 50’ to 70’ 30’ April to May Engelmann Spruce Picea engelmannii 75’ to 100’ 10’ April to May Western White Pine Pinus monticola 45’ to 150’ 2’ April Quaking Aspen Populus tremuloides 35’ to 50’ 8’ April to May Douglas Fir Pseudotsuga menziesii 15’ to 150’ 10’ April