I've had great success with Hibiscus hardy plants in my garden, and I think the key is to give them the right conditions. They prefer well-draining soil that's rich in organic matter, and full sun is a must - they need at least six hours of direct sunlight per day. Watering can be a bit tricky, but I've found that keeping the soil consistently moist during the growing season works well. During the winter months, I cut back on watering and prune the plants to protect them from cold damage. I've also found that adding a layer of mulch around the base helps to retain moisture and suppress weeds. Overall, with the right care, Hibiscus hardy plants can be a stunning addition to your garden.