Ideal for shipping plants during cold weather. Design for reliable steady heat release for 72 hours. For customers purchasing plants from this shop only. Designed for reliable and steady heat release for 72 hours. Environmentally safe. * Please ADD A HEAT PACK , for regions where temps can go below freezing. Add one to ensure safe delivery of your plants. The Uni Heat heat pack will not protect your order from freezing if it is left outside for a long time in temperatures that are freezing. Please make sure your order can be taken inside quickly if in freezing temperatures. **NOTE: PLEASE READ*** 72 hour HEAT PACK**** Please contact us regarding the need to purchase a heat pack. If you live in a cold climate or order your plants during cold season and storms you must purchase heat packs depending on the number and size of your order. We will not be responsible for any damage to the plant due to freezing temperatures. Please also note that the plant needs to be removed from the package immediately and to be watered if the soil is dry. Plants get distressed from being in a box for days during shipping. Make sure there is someone at your address to receive the package of the delivery day by USPS. Plants will vary in color and shape from the picture and will not look exactly the same. Plants may have some imperfections caused by the shipping process. Please contact us immediately upon receiving the plants if there are any MAJOR DAMAGE or issues.