Companion plants are plants that provide benefits to those around them. They may help attract pollinators, improve the soil structure, or draw in predatory insects that feed on plant pests.
When choosing companion plants for zinnias, it’s helpful to think about a zinnia plant’s needs. These plants like full sun, well-drained soil, and moderate moisture.
Since zinnias are annual crops, it makes sense to plant them with other annual flowers. Both spiked and cockscomb celosia provides a nice contrast to the round zinnia flowers.
Sunflowers and zinnias both thrive in summer, making them good companions. Sunflowers’ large flowers also attract many insects that help keep zinnia pests down.