Salvia divinorum is a tropical plant that likes plenty of humidity and lots of water. It is also rather delicate, with hollow stems that break easily, even under their own weight. In the wild, Salvia divinorum propagates by falling over, with new plants growing from the fallen and broken limbs of the original plant. Because this plant likes plenty of room for its roots, it may need to be transplanted often as it outgrows one pot after another, so knowing how to do so is essential for maintaining healthy plants.
Select a growing pot that is larger than the pot your Salvia divinorum is in. Make sure it has a drain hole in the bottom; Salvia loves a lot of water but it does not like sitting in soggy soil.
Make up a mixture of equal parts compost, peat moss and sandy loam. Add in half as much perlite. This will be the soil for your transplanted Salvia divinorum. Mix enough to fill your growing pot.
Over a sheet of newspaper to make cleanup easier, tap around the edges of the current salvia pot with a spoon or other hard object to loosen the soil around the sides. Place your fingers over the top of the pot with your salvia plant between two of your fingers and flip the pot over. The soil and the plant should fall into your hand.
Put enough new soil into the bottom of the new pot so your salvia plant is at the same depth as it was previously. Fill in around the plant with more new soil and press gently.
Water the soil very well until it leaks out of the drain hole and into the drain pan underneath. Once the soil is very wet (but not soggy because the water is draining out) spray the leaves of the plant with the misting bottle.
Fertilize your plants with fish emulsion, not exceeding the manufacturer's recommendations for the size of your pot. Less is better than too much. Water after applying the emulsion. Keep the soil damp but not soggy at all times and mist your plant frequently with the spray bottle; your plant will grow better under humid conditions.
Do not place your plants in direct sun for more than a couple of hours per day. Indirect light most of the time is best. Keep the temperature between 60 and 80 degrees F as much as possible and do not expose your plants to freezing temperatures, which can kill them.