Hibiscus needs a warm position in full sun, preferably sheltered from strong and cold winds. It prefers a well-drained soil that remains moist during summer.
In spring, give them a good feed with preferably a high potash granular feed, such as rose feed
Mulching the soil will help to maintain soil moisture levels and keep down weed growth.
Hibiscus don’t need regular pruning. In February/March, prune out any dying, diseased or damaged stems, plus any excessively congested or crossing stems and any that are growing in the wrong or unwanted direction.