A semitropical perennial, salvia divinorum thrives in climates that are humid and up to 70 degrees Fahrenheit. This makes it an ideal candidate for indoor growth, provided, of course, that you compensate for the dryness of the typical home through regular waterings and mistings of its big green leaves. Salvia also grows up to 4 feet tall, so be sure to use a big enough pot.
Select a salvia plant at the nursery, buying a small plant in a 4-inch pot. Make sure it was cultivated indoors.
Fill the bottom 3 inches of the pot with gravel. This will improve drainage and prevent root rot.
Fill the rest of the pot with potting soil. Water thoroughly and let sit overnight.
Plant the salvia plant by scooping aside dirt to create a hole and then gently placing the plant into the hole, making sure there's enough room for the root ball. Fill the hole with dirt and then pat down on the surface to make sure the plant is secure.
Set the pot in a location with partial sunlight, about two or three hours. Salvia plants can handle more sun if they are watered frequently and misted.
Fertilize right after planting and then once every other month. Always water immediately after fertilizing; the roots of the salvia absorb nutrients only if they have been dissolved in water.
Keep the soil moist, but not soaked, at all times. Mist the plant's leaves with a mister daily, at least until the plant attains a height of 4 feet.