How To Look After Hibiscus Syriacus. To help improve soil moisture for your Hibiscus syriacus shrub place a 1-inch 25 cm layer of mulch around the stem. Hibiscus syriacus With smaller leaves and flowers blooming around two to four inches across this flowering shrub or small tree can still grow up to eight feet tall and can survive below-freezing temperatures.
Rose of Sharon. Make sure that the soil your hibiscus are in is damp at all times as when it dries out it can cause wilting and heat stroke in the. Hibiscus plants are heavy feeders so fertilize the plant regularly to encourage blooming.
To care for Hibiscus grow the shrubby plants in full sun or partial shade.
They all demand a spot in really well-drained soil and full sun but given that they are remarkably easy to grow and will flower year after year with very little attention. Plant the bottom third or bottom half of each stem. Remove the plastic after one week. Try to keep your hibiscus plants moist but not soaking wet.