With thousands of different cultivars developed over the years, there is considerable variation in the growth habits of hibiscus plants. It may take a little experimentation to find just the right location and micro-climate in your yard, especially for finicky show-quality exotics.
That is just one of the advantages of keeping your hibiscus in pots.. if a plant does not do well in one part of your yard, it is fairly easy to move a potted plant to an area with slightly different sun exposure. Yards have many different micro-climates. Pavement and bricks create hot, dry zones. Shade trees may produce cooler areas with more moisture.
Open lanes oriented to the prevailing winds have better air circulation. Poor air circulation is a leading cause of plant diseases and insect infestations. If your property has a slope, then low spots may hold moisture longer. Hibiscus planted in boggy areas will almost certainly get root-rot and die.
It is always a great surprise to see a plant that might be considered a waste of space, suddenly start throwing out beautiful blooms when given a just-right-location!