Hi all. When I bought my house I also inherited several plastic raised beds. The previous owner told me to mound up the dirt every winter so the soil wouldnt expand and crack them.

I was wondering if this is actually necessary or just something they thought they needed to do. I have never heard of this before but then again, Ive always only had wooden ones before.

Im trying not to till the soil too much so Id like to avoid mounding it if I can. Does anyone here have plastic raised beds? Do you mound the soil or leave it as is?