Zinnia Flower Plant Care. Many plants labeled as annuals are actually perennials that are only hardy in the warmest hardiness zones but zinnias will be annuals everywhere. Jul 16 2020 Good air circulation between zinnia plants is crucial in preventing fungal diseases like powdery mildew so thin plants to a minimum of six inches apart once seedlings reach three inches tall.
May 30 2021 Deadheading zinnias is a great way to encourage flower production with an abundance of flower blooms. Water the pots whenever the first inch 25 cm or so of soil has dried out. Jan 14 2019 Once you have zinnias growing in pots care for them is easy.
They are low-maintenance plants that dont require too much care.
They dont require too much fertilization and can thrive even in poor soils that other plants wont grow in. Avoid diseases by being careful. Another factor to take into account the time of the day. The soil should feel moist six inches deep around the plants.