Does homeopathic or herbal treatment of cancer have any scientific recognition?
The methodology behind homeopathy is scientific nonsense.  If you dilute anything a billion times, it will have no chemical effect, not even if you shake it all the while.  So no, homeopathy does nothing for cancer, or any medical condition at all.

Of course plants can have active compounds in them, once scientists have identified those compounds, they can be tweaked to make them act better in the human body, and then manufactured under strict guidelines to ensure purity, and tested to determine the optimum dosage; then it's just medicine.  Taxol comes from yew trees, it doesn't mean that native herbalists were successfully treating cancer with it for hundreds of years.  Native herbalists were using willow bark, which contains salicylic acid, which has anti-inflammatory properties, but chemists improved on it, reducing some of its negative side effects, by modifying it to acetylsalicylic acid.

Millions of people get cancer.  Doctors get cancer.  Herbalists get cancer.  If curing cancer was as easy as mixing some leaves in a poultice, people would do that.