Plant zinnia seeds after your last frost date when nights stay above ~50°F, in a sunny spot (6–8+ hours) with well-drained soil. Loosen the top 1–2 inches of soil, scatter seeds evenly, then lightly cover with about 1/4 inch of soil and gently press for good seed-to-soil contact. Water with a soft spray to keep the surface consistently moist (not soggy) until seedlings emerge in 5–10 days, then shift to deeper, less frequent watering as roots develop. When seedlings are a few inches tall, thin to 6–12 inches apart (closer for smaller types, wider for larger) to improve airflow and encourage strong plants. For longer bloom, remove spent flowers regularly and avoid over-fertilizing -zinnias perform best with moderate nutrients and steady sun.

For more planting instructions visit our Gardening Guides

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If you've followed our detailed planting and care instructions and you don't experience success, we will honor our satisfaction guarantee for up to one full year from delivery. We are happy to offer a replacement, an account credit or a refund. Your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 5 days.

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Thank you and good planting!