Most seeds
do need to be buried to grow. Here's why:
* Moisture: Burying seeds provides access to the moisture they need to germinate.
* Protection: The soil protects the seed from drying out, extreme temperatures, and being eaten by birds or insects.
* Darkness: Many seeds need darkness to germinate. The soil provides this darkness.
* Stability: The soil holds the seed in place, preventing it from being moved by wind or rain.
However, there are exceptions:
* Some seeds need light to germinate. These are usually small seeds that don't have much food reserves. They need sunlight to start photosynthesis. Examples include lettuce, petunias, and basil.
* Some seeds germinate on the surface. These seeds often have a hard seed coat that needs to be softened by rain or weathering before they can germinate.
* Some seeds require specific conditions. For instance, some desert plants require fire to trigger germination.
So, the best way to determine if a seed needs to be buried is to check its specific requirements. Seed packets often include planting depth recommendations. You can also find this information online or by contacting a local nursery or garden center.