Few yellow leaves appearing on newly planted Rose of Sharon (Hibiscus)

Question

We have a lovely hedge of Rose of Sharon in our yard. Several were lost this past winter storm here on the south shore of Massachusetts. They are a very hardy plant specimen so at a lost for what’s going on…. have given it a slow releasing fertilizer.
Any input would be most grateful. Thank you!

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Answer 1

A new planting with yellow leaves; it is likely watering issues. Either too much or too little.
Daily water will be needed for the first few weeks, then you can taper off.

https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/rose-of-sharon-bush.htm