When it comes to the bottom of a cold frame, there are a few options you can consider. However, it’s important to note that a bottom is not necessary for a cold frame. Many gardeners opt to simply use the soil as the base for their cold frame. This allows for natural drainage and promotes healthy plant growth.
If you do decide to create a base for your cold frame, there are a few things to keep in mind. First and foremost, you’ll want to ensure that the base allows for proper water drainage. This is important to prevent water from pooling and potentially damaging your plants.
One option for a base is to use straw bales. Straw bales can provide a sturdy foundation for your cold frame and also offer insulation for your plants. To create a base with straw bales, simply arrange them in a rectangle shape to match the size of your cold frame. Place the cold frame on top of the straw bales, making sure it is level and secure.
Another option is to use recycled materials, such as old windows or glass panels, to create the sides of your cold frame. These can be attached to a wooden or metal frame to form the structure. Again, you can place the cold frame directly on the soil without a bottom, or you can use straw bales as a base.
Using soil as the base for your cold frame has its advantages. It allows for natural drainage and also provides a familiar environment for your plants. Additionally, the soil can act as a heat sink, absorbing and releasing heat to help regulate the temperature inside the cold frame.
In my personal experience, I have used both methods – a cold frame with a soil base and one with straw bales. Both have worked well for me, but I found that using straw bales provided an extra layer of insulation and helped retain heat during colder months.
To summarize, the bottom of a cold frame is not necessary, but if you choose to create a base, make sure it allows for proper drainage. Options for a base include using straw bales or simply placing the cold frame directly on the soil. Each method has its advantages, so choose the one that best suits your needs and gardening preferences.
