The reason why plants arrive dry is because we try to prevent them from sweating and developing fungus quickly during transit, also the extra moisture would potentially damage the packaging or even make them heavier and in turn the cost of the shipping would be much more. We advise watering upon arrival and give the time to recover from the shock of being in a dark box for a few days. Your plants will appreciate this.
If you follow our guidelines enclosed, you will be rewarded in the growing season by watching your plants grow into mature and very strong plants.