A variety of materials can be used to construct raised beds, but do not use materials that might leach chemicals into the soil, such as old railroad ties.
Raised beds. A variety of materials can be used to construct raised beds, but do not use materials that might leach chemicals into the soil, such as old railroad ties. Soil in raised beds will heat up more quickly in the spring and stay warm longer into the fall. Vegetables in raised beds will require more frequent irrigation than those in an in-ground garden.