Our cast stone designs are incredibly robust and the high-quality of our materials means that both our Home and Garden, and our Building and Construction products can easily withstand the elements including frost.  However, fluctuating weather temperatures and conditions, more so in the summer months, can sometimes cause cast stone, just like natural carved stone, to be susceptible to slight cracking.
The appearance of hairline cracks and cracks is certainly not uncommon in stone designs, nor is it a new phenomenon, it has been happening for hundreds of years.
The good news is that in almost all cases, cracking is nearly always only aesthetic and is very rarely detrimental to the structural integrity of their designs.  So, you can rest assured that your planters, statues and fountains will not fail or fall apart if they develop hairline cracks or cracks.