1 The soil should be well drained and moist for optimum growth. 2  Add a bit of mulch or compost to your cilantro bed to provide nutrients for the soil and an extra layer of protection for the roots.  If your plants begin to flower, trim off the flower heads to prolong leaf growth.
PRN is an abbreviated medical term that is used commonly in the healthcare community. The abbreviation stands for pro re nata. The medical community often uses Latin phrases for medical abbreviations. This can allow students of all different backgrounds to understand each other on a universal level.
Report Abuse. I think the post ahead of me is confusing it with LPN (liscenced practical nurse.) It stand sfor pro re nata and means as needed. Like a doctor might write an order for Tylenol 650mg every 6 hours PRN. That means I don't have to give you tylenol every 6 hours, just when you want it. Sometimes it's used for staffing too.