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Though plants might not seem like the first thing individuals think of when they ponder long-term investments, perennials can be just that. The home and garden experts at HGTV note that some perennials can live for a very long time. For example, according to HGTV, the colorful flowering plant peony, despite a blooming season that usually lasts just seven to 10 days, has been known to survive for 70 to 100 years. Hostas are another popular perennial because they require little maintenance, and that extra free time can add up over the course of the hosta’s life, which can exceed 15 years. Long-living perennials are not necessarily unusual, but gardeners should know that many perennials, and particularly those characterized as “short-lived,” tend to live around three years.