New Hampshire scientists conducted a two-year winter trial to determine the best spinach varieties and planting dates for production in unheated high-tunnels.
If you produce in the field and plan to add a greenhouse, or if you plan to switch from ornamentals to vegetables in protected culture, understand the systems involved and know your water source.
New Hampshire experiment station scientists conduct a winter trial in high tunnels to help growers make decisions on which varieties to plant and when.