How to heal asthma in children holistically?

Cannot: I'm afraid asthma cannot be cured by western medicine or any complementary or alternative medicine. It can, at best, be well-managed. Most children with asthma will actually outgrow it and be perfectly healthy (lung-wise) as adults.

Difficult to answer: If the asthmatic's "triggers" are allergies, any holistic or complimentary treatments that can reduce allergies responses may reduce attack frequency and perhaps severity. Always check with your physician before you try or add anything to the chil'd's treatment.