I am trying to transplant rosemary. You say to put it in a 'potting medium'. What is that?
Certified GKH Gardening Expert
Potting medium is just a fancy way of saying soil or the any of the many other things you grow plants in. Not all potting mediums are soil (dirt), some are part soil and some can be soliless.
In a word, soil. Use a good gardening mix - don't be tempted to buy the $1 bags of muck that some retailers call gardening mix. You need one that drains well. I don't know if we are allowed to use brand names here but an example would be Miracle Grow Planting Mix sold at almost every garden center.