Zinnia
Flower
Direct sow after last frost. Zinnias don’t transplant well, but can be started indoors, if necessary, in peat or coir pots, 6-8 weeks before planting out. Maintain a soil temperature of 21-26°C (70-80°F). Seeds should germinate in 5-24 days.
Zinnia
How to Grow:
Flower
Timing:
Direct sow after last frost. Zinnias don’t transplant well, but can be started indoors, if necessary, in peat or coir pots, 6-8 weeks before planting out. Maintain a soil temperature of 21-26°C (70-80°F). Seeds should germinate in 5-24 days.
Starting:
Just cover Zinnia seeds, and aim for a final spacing of 25-30cm (10-12″) between plants.
Growing:
Depending on the variety, it takes about two months after sowing for the first flowers to appear. Take regular cuttings of Zinnia stems to enjoy indoors, starting mid-summer right into the fall. Cutting encourages the production of new flowers and seems to stimulate the plants for greater vigour. Watch for signs of powdery mildew on the leaves, usually in late summer. Try to avoid overhead watering to prevent mildew.
Harvest:
