• a field of brightly coloured California giant zinnias
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California Giants Mix Zinnia Seeds by West Coast Seeds (Zinnia elegans)

California Giants Mix Zinnia Seeds by West Coast Seeds (Zinnia elegans)

California Giants Mix Zinnia Seeds by West Coast Seeds (Zinnia elegans) produce large, fully double blooms in a vibrant mix of red, pink, orange, yellow, purple, and white. This tall annual variety is known for its bold colour, strong stems, and impressive flower size. This listing is for seed packets only and does not include live plants.

Zinnia elegans is a warm-season annual valued for its heat tolerance and long-lasting summer blooms. The California Giants Mix is particularly suited to garden beds, borders, and cutting gardens due to its height and large flower heads. Plants develop upright stems with repeated flowering when regularly harvested.

These zinnias attract pollinators and provide continuous colour throughout the warm growing season.

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Sun Requirements ▾

Full sun is essential for strong stems and abundant blooms. Provide at least 6–8 hours of direct sunlight daily. Insufficient light will result in weaker stems and reduced flower production.

Watering Instructions ▾

Keep soil evenly moist during establishment. Once mature, zinnias tolerate moderate dryness but perform best with consistent watering during active growth and flowering. Avoid overhead watering when possible to reduce foliar disease risk. Do not allow soil to remain waterlogged.

Care Tips ▾

California Giants Zinnias grow best in well-draining soil with moderate fertility. They prefer stable warm temperatures and average outdoor humidity. Good air circulation is important to reduce the risk of powdery mildew. Avoid overly rich soil, as excessive nitrogen may reduce flowering performance. Direct sow California Giants Mix Zinnia seeds outdoors after the final frost once soil temperatures reach at least 18°C, or start indoors 4–6 weeks prior to transplanting. Seeds germinate best in warm soil conditions. Plants typically begin flowering in approximately 60–75 days. Regular cutting of blooms encourages continued flowering throughout the summer.
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