[Dynseli]

Fenugreek (and Wild Yam) - contains diosgenin - Increases bud differentation. Fenugreek seed sprouts contain more diosgenin than non-sprout fenugreek seeds.
Asparagus root (common or shatavari) - contains shatavarins - Ayurvedic herb asparagus racemouses increased mammary and areolar tissues,

Hops (Humulus) - contains 8-prenylnaringenin - Activates ER-α, and progesterone receptor.<8pn> Causes mammary cell proliferation.<8pn> Increases prolactin and IGF-1 levels.<8pn> Decreases LH and FSH.<8pn> Affects menstrual cycles. Potent phytohormone. Reduces hot flashes.
Fennel (Foeniculum) - Increased weight of mammary glands.

Tea tree and lavender oil cannot be ingested, and can only be used topically. Lavender tea might be ok. Tea tree and lavender oil were implicated in gynecomastia. Reference links and discussion for tea tree and lavender oil are at http://www.breastnexus.com/showthread.php?tid=21618

There is consensus for Pueraria.

Hops, Asparagus, and Fenugreek have antitumor or anticancer properties.

See also: 'Biology of the breast' http://www.breastnexus.com/showthread.php?tid=21572

References:
http://www.fugh-berman.com/files/Bust.pdf
http://www.indianjmedsci.org/article.asp...last=Goyal
<8pn> http://www.ncbi.nlm.nih.gov/pmc/articles...74795/#R26
https://www.thieme-connect.com/products/...32-1328330
http://www.psychologytoday.com/blog/all-...herbs-bust