Plant Near a House

Planting within 2 feet of a house will make a several degree difference in the temperatures the plant experiences.

Shelter from Wind

Planting where there is shelter from wind will make a difference in the temperatures the plant experiences.

Frost Cloth

making a frost cloth shelter around the plant will make a several degree difference. Plants should not touch the cloth. In combination with a heater (see below) this will make a big difference.

Heaters

Halogen (not LED) flood lights can be used as cheap heaters. Temperature controlled outlets can be purchased to automate turning heaters on/off. Make sure that plugs will not get wet in irrigation or rain.

Links

• Phoenix Frost Dates
• Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures This article talks about citrus specifically, but some of the methodology could be applied to other types of plants as well.