webesemps said:Sweetwind, it depends what is meant by "need to replant". You can plant an entire frame and then find that a couple of semps don't make it and so you pull and replace with a few others. Or you can plant like I did in sections and find that an entire section doesn't make it or you don't like the way it gels with the other sections. Then you might pull the entire section out and replant with another 20 of the same cultivar to make a new section more to your satisfaction. Lastly, you can look at a frame holding up for 7 months or at a frame that has held for 3 years and decide that you want to re-do the entire thing because it looks tired or not healthy or no longer pleasing to the eye.
herwood said:I have found semps grow in most every soil. I am not very kind to my semps but they keep growing I, have planters that are in such poor soil or maybe poor drainage that they have at some times grew a mold on the top and still keep growing they do have drain holes it just maybe they I have had a lot of rain the past month . My point is they are great plants and hard to kill. Please do not follow my example just take Bev's advice as she knows how to take care of semps.