Natural Plant, Comes from nature , the strongest shall survive i lost 3 to animals because idid not plot properly but you will be fine , especially if you planted in the earth in a good soil thats not to much clay that might cause flooding, Check on them if you see pools of water around them then you might want to improve drainage if digging them up is not an option at this point divert the water, If there is not water pooling , Do not worry they will be fine, if its anything like we have had here over the last week or so with sun and wind with no rain then its a much needed water, You never know next week may bring record heat and sun then your mint
just remember to check them for good drainage that is the only main concern , Trust me its a long 5-6 months they will have worse weather to survive.