Hosta — 77 species

Hosta is a genus of robust, clump-forming shade perennials grown primarily for their bold, sculptural foliage, ranging from the compact 'Blue Mouse Ears' to the vast 'Empress Wu'. They thrive in dappled to deep shade — morning sun suits most cultivars, but prolonged afternoon sun scorches leaves. Water needs are moderate to regular: aim for about one inch per week in well-drained, organically rich soil and mulch to retain moisture. All Hosta species are toxic to cats and dogs; saponins in all plant parts cause vomiting, diarrhea, and lethargy.