I got kind of caught up on the herbal bandwagon recently reading around here and elsewhere. On some of the ttc sites it seems like everybody is on vitex, for example. I bought some of that, red clover, nettles, etc... I am definitely more of a scientific-minded kind of girl and wary of taking herbs, but I got into this funk of "I have to be pregnant...NOW!"
But I haven't used any of them yet, because as I've done more reading, I realized that each of these is for specific problems. None is a general panacea for fertility. For example, red clover has phytoestrogens and isoflavones (like soy does). Apparently it is used if you have symptoms of low estrogen.
Vitex, from what I understand, is best for women with luteal phase defects, and especially for the fertility issue that a lot of nursing women can have--lower than normal progesterone with normal to mildly elevated prolactin levels. It definitely seems to be a drug to me from all I've read, and after researching I actually feel too nervous to self-prescribe it. Apparently effects can vary depending on how much you take, what time of day, and how much is taken. If I have trouble conceiving I will probably try to find an herbalist before I would take it. But that is just me.
I thought red raspberry was mainly for late pregnancy? It's a uterine tonic. The book I have says that it has not been shown to affect the non-pregnant uterus.
I recommend the book "Women, Hormones and the Menstrual Cycle" by Trickey. It's quite a big book, and discusses many different herbs and their uses for different issues related to fertility, cycle problems, menopause, PMS, etc. It seems to be very well-researched and has citations for all of the information given. I haven't read Susun Weed's book.