Succulents are very forgiving and very hardy plants. However with that being said if your weather is below 30 degrees F we strongly recommend purchasing our hot packs for $5 (per box of 100) to make the journey more comfortable for the plants. If your weather is 15 degrees or below we would recommend delayed shipping if possible. If your order is calendared for an event: it is YOUR responsibility to contact us to delay your package or call to add a hot pack if necessary!! Once your box is delivered bring it indoors as soon as possible and certainly do NOT let it sit out overnight.