Minnesota falls into United States Department of Agriculture ( USDA ) hardiness zones 3 and 4 . For shade gardening in Minnesota , you have many option , include annual , bulbs and perennial . Annuals are efflorescence you plant every twelvemonth ; they do n’t know through the winter . perennial include plants that can winter over in Minnesota , as well as plants that you may demand to dig up and convey within for the wintertime .
Annuals
Annuals tend to have a lot of semblance and are generally splashy . annual that grow easily in the shade in Minnesota let in impatiens , wax begonias and gnome salvias . implant your one-year flowers in bed of soil that debilitate well , and augment your soils with between 20 - and-30 per centum compost both for nutrients and to help entertain water . In some parts of Minnesota , particularly in the north , you may need to start annual seeds in spite of appearance or buy young greenhouse flora .
Bulbs
Due to the potency for mysterious , bitter cold in Minnesota , process bulbs as annuals . Plant the bulbs in the capitulation and allow them to bloom in the spring . Although you’re able to winter over the light bulb , the leaves may not get enough sun during Minnesota ’s forgetful growing time of year to flower in following years . The University of Minnesota recommend digging up the bulbs and discarding them after they bloom . Bulbs that arise well in the shade in Minnesota include tuberous begonias , daffodils , crocus , snowdrops , scillias and tulip .
Perennials
Many perennial do well in shady locations of Minnesota . Evergreen ground cover , like periwinkle and Japanese spurge , can winter over under an insulating snow concealment . Other spectre - tolerant plants like waste reddish blue , lily of the valley , unfounded gingerroot and goutweed can easily winter over with almost no protective cover . As opposed to annuals , perennial tend to only flower for a few weeks of each growing season . The balance of the season , they are green leafy plants .
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