Q.I think my trees have cherry leaf spot, should I be worried?
I recently purchased 6 weeping cherry blossom trees for my garden. They were delivered & planted last Monday. I have since noticed problems such as spots & holes in leaves. After googling this I think it may be Cherry Leaf Spot disease. I am new to gardening and I am worried that the trees won’t survive. Can you give me any advice? Should I contact the company where I purchased these trees?

Certified GKH Gardening Expert
I would find out if they have a replacement policy (may be up to a year) just in case these take a turn for the worse. I would also let them know your suspicions and if the disease is verified, I would ask for a replacement.
The holes could be either from a pest or the fungal disease.
The spots could indicate a fungal disease such as leaf spot or Shot Hole disease. If there aren't too many leaves affected, pull off those leaves with spots and discard in the trash.
Keep up with the watering and feeding needs of the plants and those around them.
https://www.gardeningknowhow.com/ornamental/trees/weeping-cherry/weeping-cherry-growing-tips.htm
https://www.gardeningknowhow.com/ornamental/trees/weeping-cherry/pruning-weeping-cherry.htm
https://www.gardeningknowhow.com/edible/fruits/cherry/cherry-shot-hole-disease.htm
https://www.gardeningknowhow.com/edible/fruits/cherry/leaf-spots-on-cherries.htm