Hostas are a topnotch groundcover for shady areas. Plant them on a tough-to-mow hillside to create a lovely, carefree garden bed. If you have a steep slope that water runs down so quickly the soil can't absorb moisture, try breaking up the hill with rocks or other barriers. It will slow the flow of water.
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I'm a sucker for hostas@Judith Lebrun and I must admit that I Debra am a sucker for them too!