The prescribed distance between plants in a nursery bed can vary depending on several factors, including the type of plant, its growth habits, and the desired outcome. Here are some general guidelines for plant spacing in a nursery bed:

1. Seedlings and Small Plants: For small seedlings or plants that are still in their early growth stages, spacing is typically closer to allow for optimal growth and development. This can range from a few centimeters to a few inches, depending on the specific plant species.
2. Transplants and Larger Plants: As plants grow and mature, they require more space for their roots to spread and for adequate air circulation. The spacing between larger plants in a nursery bed can range from a few inches to several feet, depending on the eventual size of the plant.
3. Plant Type and Growth Habit: Different plants have varying growth habits, such as spreading, upright, or clumping. The spacing should consider the natural growth habit and expected size of the plant at maturity. Research the specific plant’s requirements or consult gardening references to determine the recommended spacing for optimal growth.
4. Planting Method: The planting method used in the nursery bed can also influence the spacing between plants. For example, if plants are grown in containers or seed trays before being transplanted to the nursery bed, they may need to be spaced closer together initially to accommodate the limited space in the containers. Once transplanted to the bed, they can be spaced further apart.
5. Purpose of the Nursery Bed: The purpose of the nursery bed can also impact plant spacing. If the intention is to grow plants for sale or to be transplanted to larger containers or field settings, the spacing should allow for healthy growth and ensure adequate root development.

It’s important to note that these are general guidelines, and specific plant species may have their own recommended spacing requirements. It is advisable to consult plant-specific resources, gardening references, or seek advice from local horticulturists or nursery experts to determine the appropriate spacing for the particular plants you are cultivating in your nursery bed.