Botanically called Hibiscus syriacus, a rose of Sharon is a blooming shrub that lights up any landscape from mid to late summer with abundant pink, white, blue and purple blooms and deep green, shiny foliage. This deciduous bush grows up to 10 feet high and attracts butterflies and hummingbirds. Collect seeds yourself, or purchase them from a reliable nursery and grow this flowering bush in your backyard or garden.
Collect pods from an area rose of Sharon bush in fall, soon after they turn brown, to prevent each from breaking naturally and dispersing contained seeds. If you own a rose of Sharon bush yourself, stop deadheading spent blooms in late summer to encourage the bush to develop pods.
Hold each seed pod over a small bowl and press it firmly between your fingers so it cracks and releases seeds into the bowl.
Fill 4-inch wide peat pots with good quality potting soil. Tamp it down to remove air bubbles.
Plant two to three seeds in each pot. Press each 1/2 inch deep in the soil, and spread a thin layer of sphagnum moss over the seeds to prevent fungi from growing alongside. Water gently so the soil is evenly moist.
Slide each pot in a clear plastic bag to mimic a greenhouse, and place the pots in a sunny location indoors, such as a southward windowsill. Check the pots frequently to ensure the soil is not dry, and water lightly when necessary. The seeds will germinate in two to three weeks.
Acclimate seedlings to the environment soon after they germinate. Remove the plastic covering for an hour on the second day, two hours the third day and so on until they reach 1 inch tall. After that remove the bags altogether. Thin seedlings from each pot, or transplant them to individual bigger pots so each sprout has plenty of room to grow and spread and does not share nutrients with another sprout.
Place the pots outdoors when the seedlings are 3-inches high and there is no danger of frost. Make sure the site is protected from direct sunlight, winds and rain, such as on a covered patio or balcony.
Plant the seedlings in the ground in a well-drained spot that receives six to eight hours of direct sunlight every day. Space each seedling several feet apart to provide a growing bush sufficient space to spread. Water the plant once a week.