100 Best Rock Garden Plants in The World. In Gardening. Rock Garden Plants with Irish Moss rock garden plants with irish moss. Because most rock garden plants thrive in dry soil, it can be challenging to grow them in wetter climates such as the Pacific Northwest. However, some perennials such as Irish moss love moisture and are a great 100 Best Rock Garden Plants in The World - Home and Gardens Please note: You are currently browsing img 11 ideas for creating a rock garden angies list that is 3931x2624px in size. This image is listed in moss rock landscaping ideas category. 100 Best Rock Garden Plants in The World Home and Gardens, 3931x2624 in 2,243.89 KB.