Coast of Maine 'Castine Blend' Raised Bed Mix
There are a variety of options for building raised beds. You can purchase raised bed garden kits which come with pre-cut lumber and hardware, or you can build your own using rot resistant lumber like redwood or cedar. (Never use pressure treated lumber as the preservative agent will leach into the garden soil.)
Your raised bed should not be any wider than 3-4 feet. This is so you can plant, dig and weed your garden by easily reaching into it from either side without stepping into it—which would cause the soil to become compacted.
The first thing you’ll need to do is prepare the site for your bed.
Find a level, sunny spot and dig up and remove any grass or weeds. Then, loosen the soil below to a depth of 8-12 inches so your plants will have room to grow deep roots.
An easier and much quicker way to prepare the bed is to simply add a layer of newspaper or cardboard over the grassy area. If using newspaper, place about 6-8 sheets directly over the grassy area. If using cardboard, one or two thicknesses will be sufficient. Then thoroughly wet the newspaper or cardboard with a garden hose or watering can. The newspaper or cardboard will smother the grass and, over time, completely disintegrate. Alternatively, you can simply cover the site with landscape fabric to smother the sod or grass.
Raised bed gardens can also be located on paved areas or on rooftops. You may need to build a deeper bed to accommodate more soil so the roots will have sufficient depth to grow. Either way you choose, you’re now ready to fill your bed with Castine Blend Organic Raised Bed Mix!
Place the raised bed structure over the prepared area and level it.
Using the chart below, or refer to the Coast of Maine Online Soil & Mulch Calculator to calculate how many bags of mix will be needed.
After you’ve filled it to the level that you want, rake it out evenly so that the mix is evenly distributed.
You are now ready to plant seeds and seedlings knowing that you are using the highest quality organic soil for your raised bed garden!