Rooting Salvia: Soil Method
By: Sunsnail
I've been growing Salvia divinorum for a few years now, and have propagated dozens of plants using this method. It has never failed to produce a healthy plant. Instead of placing the cutting in water, I place it in soil. This differs from rooting in water in a few ways.
Advantages of Soil RootingNo shock transferring it from water to soil
Reduced risk of fungal infection
Produces roots quicker
Disadvantages of Soil RootingMore difficult to check on rooting process
First: Gather your materials. You will need one Salvia divinorum plant, knife or razor, a 2L soda bottle with the bottom cut out, and a pot with soil. Any soil will work, whether its sandy, or filled with clay. I use standard potting soil.
NOTE: The pictures in this guide show using scissors to take the cutting but it is highly recommended that you use a razor or knife instead.

Locate your cutting. I like larger cuttings with 5-8 nodes on them. The plants establish themselves much quicker this way. Plants with as little as ONE node can be successfully rooted though. They just take about ten times as long to develop.

Use a sharp knife or razor that has been sterilized (by burning it, soaking in alcohol, or both) to make the cut.

One Cutting!

Strip the leaves off of the bottom 1-3". This part will be stuck in the soil. The leaves can be thrown away or used in other ways.

You can optionally dip the end in rooting powder. I've always used rooting powder, so I do not know how much it actually helps the process.

Stick the plant in the dirt, about 2-3 inches in. In theory, the more stem that is submerged in soil, the more roots.

Place the bottle on top of the plant. This keeps the plant from dying. When the leaves are much larger than the bottle, you can get them to fit in the bottle by pulling the leaves up, starting from the bottom. Think about the top of a pineapple. The leaves are facing upwards. Make sure the bottle is pressed an inch or two in the dirt

Water the plant a lot. Every 3 days at least, but every 2 days wouldn't hurt, especially in hotter climates.

Finally, place the plant with all your other Salvia plants. If outside, placing the plant behind a larger, more established Salvia gives it a good shading from the hot sun. Depending on lots of variables, your Salvia plant should have roots in 1 week. By week 2, your Salvia should be established enough to have the bottle taken off. If you take the bottle off and the plant droops down, put the bottle back on and wait another week. Take the bottle off again, in the evening. Give it plenty of water, and some tough love, and it will adjust to the climate by then.