As we've reported, the Japanese yew is a commonly planted ornamental evergreen in Idaho -- with lethal ramifications for wildlife. Once an elk eats just a couple handfuls of the plant, the animal goes into cardiac arrest and dies within hours. Idaho Fish and Game estimates about 75 elk and pronghorn around the state died this winter from eating yew.
There's good reason the yew is popular for the landscaping world; the shrub survives in shade and requires little maintenance. It's been imported into the state for decades (it's not grown here), and many people don't even know it's in their yard.
Fish and Game has come up with a list of alternatives to the toxic yew for people who want a similar type of plant, but don't want to risk killing wildlife. Here's some Idaho native evergreens the agency suggests for shady spots:
Western swordfern (Polystichum munitum)--shade or part shade, medium water; 2 to 4 ft tall
Oregon boxleaf (Pachystima myrsinites)--shade or part shade, medium water; 2 to 4 ft tall
Curl-leaf mountain mahogany (Cercocarpus ledifolius)--part sun or full sun, low water
Russet buffaloberry (Shepherdia canadensis)--part sun or full sun, moderate to low water
Oakleaf sumac (Rhus trilobata)--part sun or full sun, low water
Oregon grape-holly (Berberis aquifolium, Mahonia aquifolium)--full shade to part shade, medium water; may spread
Here are other native plant options, though these ones are not evergreen:
Syringa (Philadelphus lewisii)--part shade to full sun, low water; Idaho’s state flower
Woods rose (Rosa woodsii)--full shade to full sun, low water
Thimbleberry (Rubus parviflorus)--full shade to part sun, moderate water
Oceanspray (Holodiscus discolor)--part shade to full sun, moderate water
Mallow ninebark (Physocarpus malvaceus)--part shade to full sun, low water
Rocky mountain maple (Acer glabrum)--part shade to full sun, low water
Golden currant (Ribes aureum)--part shade to full sun, low to moderate water
Red flowering currant (Ribes sanguineum)--part shade to part sun, low to moderate water
Common snowberry (Symphoricarpus albus)--full shade to part sun, low water
Red-twig dogwood (Cornus sericea)--full shade to part sun, medium water; beautiful red branches; a yellow-twig cultivar is also available
Highbush cranberry/mooseberry (Viburnum edule)--full shade to part shade, medium water
If you're in Blaine County, the county weed department can help you identify whether the plants in your yard are Japanese yew. The county passed an ordinance in 2016 banning the plant.
Find reporter Frankie Barnhill on Twitter @FABarnhill
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