When to Plant in Spring:
- Earliest Planting Date: 2 weeks after Average Last Frost
- Latest Planting Date: 5 weeks after Average Last Frost
- Length of Planting Window: 3 weeks
- To find your Average First or Last Frost, click here and type in your zip code.
Planting:Plant seeds 1/8 inch deep in rows spaced 18-24 inches apart. Thin plants to stand 12-18 inches apart.
Care: Cut plants often to encourage new blooms
Harvesting: Harvest before flowers are completely open.
Special Instructions/Tips: For best results in a vase, cut your zinnia’s above a node. Strip the leaves off of the stem and put directly in a bucket of water until you can transfer it to a vase.
Germination: 5-24 days
Days to Maturity: 75-90
Preferences: moderate water, full sun, well-draining soil