Generally, it will take two weeks to see the effects of the treatment, and the effect lasts three to six months. Over time, you may require fewer treatments because weaker muscles atrophy and require fewer injections.
The hibiscus is a heavy feeder that prefers frequent but light fertilizing. A nitrogen fertilizer in the spring and a high potassium fertilizer in the summer work well for the hibiscus plant. Also, fertilizing at the beginning and during the growing season gives the hibiscus needed nutrients for growth.
Transplant tropical hibiscus into pots. If your tropical hibiscus is planted in the ground, you will need to transfer it to a large container so it can be overwintered indoors. Use houseplant potting soil when replanting, rather than garden soil.