Figuring Out the Right Spacing for Spinach Plants
Spinach is one of the fastest growing vegetable crops, reaching full maturity in 35 to 55 days after germination of the seeds. Because they mature so quickly, spinach plants do not have much time to get very big, and the largest size they reach is only about 16 inches (40cm) tall before they bolt.
Because of their compact nature, you can plant spinach seeds fairly close together. But just how close depends on several factors:
- Check the plant spacing directions on the seed package for the variety you are growing. This gives you general guidance on spinach plant spacing.
- If your soil is rich and fertile, you can space spinach plants a bit closer together.
- If your soil is less than optimum, space plants farther apart, so each plant has access to more water and nutrients.
- For harvesting of baby spinach, space plants the same distance apart between rows as indicated for in-row spacing.
Spinach grows well in full-sun and in partial shade. The amount of light the plants receive also affects how fast they grow. If your plants are in a sunny, warm spot, they will grow faster and get bigger sooner, so give each plant a bit more space to mature.
Spacing and Planting Depth for Spinach Seeds
As a general guideline, plant spinach seeds in fertile and well-prepared soil at a depth of about ½ inch (1.3cm), and compact the soil firmly over the top of the seeds. Space rows 12 to 18 inches (30 to 46cm) apart.
Sow the seeds in the rows at a space of 2 to 6 inches (5 to 15cm) apart. Once the seedlings emerge, thin them to a spacing of 6 to 12 inches (15 to 30cm) between plants, depending on your soil, growing conditions, and whether you plan to harvest baby spinach leaves or wait for the plants to reach full-size.