Kid Friendly Privacy Hedge
We would like to put up a privacy hedge (ideally something that will rise up to 20-25 feet) in our backyard. It may go against either a concrete block wall or a wood fence (we're not sure yet). We're located in Southern California.
I've done a fair amount of research online, including in this forum, but can't seem to find any plants that are "non-toxic" or have other issues. Since this hedge will be bordering a child's play area, the toxicity was my main concern. A ficus hedge has been suggested, but I heard the roots will destroy a block wall if I put one nearby. Podocarpus Gracilior was another option, but a number of websites suggest it has some toxic properties. Same with Carolina Cherry, Privet, etc. It seems that a Eugenia Hedge would work, but landscapers suggest that it's not a great tree and one that diseases easily.
Are there any safe hedges (there must be - tons of people have hedges around here)?
Any help or advice is greatly appreciated.
Thanks so much!