How to help growth of Breast without use of surgical method?

It should be with the use of herbs or medicinal plants only

You have not mentioned your age, breast size and body structure. There is nothing you can do to make your breasts grow bigger or faster than nature intends. Don鈥檛 be misled by advertisements for special creams or 鈥渘atural鈥?herbs or supplements. If you read the fine print, you鈥檒l see 鈥渞esults vary with individuals鈥?or 鈥渨orks until full maturity is reached鈥?鈥?meaning they won鈥檛 do anything more than your own genetics have already pre-determined.
Medically it is safe to do breast augmentation once your breasts have finished growing. Most plastic surgeons recommend you wait until legal age of consent (age 18 to 21depending on state laws) before considering cosmetic breast implants. The surgeon would advise you of the risks of the procedure, which could include scar tissue, infection, inability to breastfeed your babies later, and other possible complications.
Breast size is primarily determined by heredity. However, genetics can be very complicated, and the genes for your breast size may have come not just from your mom, but also from your father鈥檚 side, or from more distant relatives you don鈥檛 even know. So many girls will have a breast size different from their mother or their sisters. Remember that breasts are normal whether small, large or in between.
Breasts usually continue to grow for about four years after your first period.

pregnancy works

Isn't much you can do to increase brest size without surgery. You can give the illusion of larger breasts with the right bra, bra inserts, or even exersices to increase muscle behind the breast tissue.