Zinnias typically take about 2 months (approximately 6 to 8 weeks) from seed to bloom, depending on growing conditions such as temperature and soil quality
. They begin flowering in late spring or early summer, usually around June or July, and continue to bloom all summer long into fall until the first frost
. To encourage blooming:
- Plant zinnias in full sun with well-draining, nutrient-rich soil.
- Keep soil moist during seedling stage, then water moderately once mature.
- Deadhead spent flowers to promote continuous blooming
Once zinnias start blooming, they will keep producing flowers throughout the growing season until frost damages the plants
