How To Care For My Hibiscus. I have found over the years they flower from Summer to Summer. To care for hibiscus trees plant the large shrub-like tree in well-draining soil that is always moist.
Water plants deeply and thoroughly if needed. Hardy hibiscus can develop fungal infections including rust leaf spot and botrytis blight. Fertilize hibiscus trees occasionally.
If the soil in your garden is not acidic you can attempt to increase the level by adding peat moss to your garden.
Apply a small amount of Searles Hibiscus Bougainvillea Food on a regular basis every 34 weeks to induce bursts of growth. Hardy hibiscus can develop fungal infections including rust leaf spot and botrytis blight. Ensure the trees grow in full sun where they get at least six hours of sunshine daily. Water plants deeply and thoroughly if needed.