Hibiscus tea made from the flowers of the hibiscus plant is high in vitamin C and antioxidants. The tea also contains electrolytes that help to keep you hydrated. Hibiscus plants grow best in tropical to subtropical regions. They are highly sensitive to cold and frost. It is best to grow hibiscus for tea indoors unless you live in a region that suits these plants outdoors.
Fill each section of your starter tray with sandy loam soil. Fill enough sections for each seed you want to plant. Begin your growing in early March.
Press one seed into each section of the tray so that it is 1/2 inch deep in the soil. Water evenly to moisten the soil. Cover your tray with the lid and set it in a location where it will get full sun.
Water your trays each day to keep the soil moist but not soggy.
Begin to transplant your seedlings when they reach 4 inches in height. Fill a 10-inch or larger pot with sandy loam soil and dig a hole big enough for the root ball. Press the bottom of each section of the tray to release your plant's root ball, and put them in the hole in the pot. Cover the roots with a mound of dirt. Repeat by putting one plant in each pot. If transplanting outside, create mounds that are 3 feet apart in rows 6 feet apart and transplant one hibiscus plant to each mound.
Fertilize your hibiscus plants with 1/2 the usual amount of general purpose fertilizer. Mulch around each plant to help them retain water.
Prune leaves as they die to increase branching and flowering. Harvest flower calyces 10 days after they first appear. Use fresh flowers to brew tea immediately. Wash and dry any flowers in a sunny location that you don't use right away for later use.