Why You’ll Love Zinnia Autumn Mix. Beginner-Easy — direct sow after frost; fast to bloom with minimal fuss. Sun & Soil: Full sun; fertile, well-drained soil; pH ~6.3–6.8 (tolerant 5.5–7.5). Fall Palette Wow — giant 4–6″ blooms in warm reds, oranges, golds, peach, and cream.
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