Since time out of mind, Artemis, the Huntress, the Unwed, the Great Midwife, the Witch Sister, has taught women how to own our own bodies. That ownership is once again under threat, and Artemis, and her Sister Witches stand ready to defend it. No one can really call them self "witch" if they don't know the ancient magic that liberates women from unwanted pregnancy.
Modern medical abortions, both surgical and chemical, are much safer and more reliable than the ancient ways. Do all you can to keep them safe, legal, and affordable, but I fear dark times are coming, and so learn now what it may soon be illegal to teach. This is the knowledge our foremothers went to the pyre for. Pray you never need to know this, but also plant some herbs. Print this out. By the time you need it, I might not be here anymore.
The first thing you have to know is that herbal abortions are dangerous. This IS NOT homeopathy, or green living. It is not a "safe alternative" to a real abortion. This is post-apocalypse medicine. If you at all can, get a real abortion, from a real doctor. Our foremothers fought, we are all still fighting, so that you will never need to know this, but when being pregnant seems worse than being dead, this is the medicine you need.
Secondly, take a pregnancy test and be sure you are pregnant before taking any of these herbs. I know some women would "rather not know", but these preparations are too dangerous to be taken unless they're really needed. These aren't emergency contraception; they're abortion. I'll talk a little about emergency contraception at the end of this post.
If you are afraid, Artemis will give you strength. (Magic for that here)
Angelica is probably the safest abortificant herb that's easy (and covert) to grow or gather.
Angelica archangelica, known as garden angelica, wild celery, and Norwegian angelica, is a common garden plant. Angelica atropurpurea, known commonly as purplestem angelica, great angelica, American angelica, high angelica, and masterwort, is native to most of the US. It grows along riverbanks and in swamps. Both kinds of angelica are very easy to grow or find, and they can be used interchangeably. To use, simmer dried root in water for 15-30 minutes. Drink every four hours (day and night) until bleeding begins. DO NOT use for more than 2 weeks. DO NOT use if you are prone to heavy bleeding.
Ruta graveolens, commonly known as rue, common rue or herb-of-grace, is a common garden plant that is extremely easy to grow. In much of the US, it has "escaped" from gardens, and grows in ditches and along roadsides. Take caution when gathering it, as it can cause blistering similar to poison ivy. It has a long history of use as an abortificant, including in medieval Europe and contemporary Latin America. If your period is overdue, boil 1 cup water, and pour over 3 Tbsp of dried leaves. Allow to cool. Drink every 8 hours until menstruation begins. If menstruation is more than 1 week overdue, wait until 4 days before your next period is due, and begin again.
Plan B can be stockpiled, and that is a better strategy than using herbs as emergency contraception. However, if you do not have access to Plan B...
Daucus carota, whose common names include Queen Anne's lace, wild carrot, bird's nest, and bishop's lace, is a common site along roadsides across the US. BE VERY CAUTIOUS when harvesting; its flowers resemble those of poison hemlock. Queen Anne's Lace has green hairy stems, while poison hemlock has smooth stems with purple splotches. Chew a teaspoon of seeds as emergency contraception. Take them as soon after intercourse as possible, then wait 8-12 hours and take a second dose. Some herbalists, especially in Appalachia, also recommend drinking an infusion of the leaves and flowers with the first dose.