Zinnia Flower How To Grow. By giving them plenty of sunlight and well draining soil the risk of mildew will be greatly reduced. Zinnias will germinate in five to seven days in temperatures above 65F.
If there is one drawback to growing zinnias it is that they are susceptible to powdery mildew. Jun 13 2021 The secret to getting the longest stems from your zinnias is pinching them when they are young. The holes should be about a quarter of an inch 6 centimeter deep for the zinnias to grow safely.
Aug 13 2018 Growing zinnias from seed might be one of the easiest gardening tasks of the year.
This amount of sunlight produces the most abundant blooms however these plants can also survive when planted in partly sunny conditions. Mar 08 2021 Plant zinnias in full sun in rich fertile soil that drains well. For sooner blooms start seeds indoors 4 to 6 weeks before your last frost date. Zinnias will germinate in five to seven days in temperatures above 65F.