Growing hibiscus is not an arduous task. The occasional gardener can grow hardy hibiscus with good success by following a few simple suggestions. The first task for growing hibiscus is to select an appropriate site. The plant site should have adequate sunlight. The sunlight should be fully available for at least 6 to 8 hours a day. The second growing condition that needs to be addressed is the soil. Hibiscuses are quite adaptable to soil types. Providing a location with highly organic soil will greatly enhance growth and flower production. To increase organic matter, it may be advisable to mix sphagnum peat moss into the planting soil. After planting, the soil needs to be kept moist constantly for the first year or two. When they are fully established,
Pruning hibiscus is not normally needed for the hardy hibiscus. Actually, these plants are herbaceous perennials, meaning their tops die down to the ground each winter, but new shoots will come roaring back into lush growth when soils warm the following spring. Because the tops die down each year, pruning is generally limited to controlling plant size when it gets too large for its area.
Pruning the dead material back in the fall is recommended. Prune the dead material back to about 8 to 12 inches. Then, apply a thick layer of mulch over the plant roots, 8 to 12 inches, to keep plant roots from freezing.
In the spring, remove the mulch and prune the remaining dead plant material to ground level. The tropical hibiscus can be pruned in