The organization is going door to door in some of the city's poorest neighborhoods. The goal: Reach 25,000 households in six weeks with information about Zika prevention and family planning services.
This comes after Monday's landmark Supreme Court decision on abortion. Since then, new restrictions on the procedure have also been rejected in Alabama, Mississippi and Wisconsin.
In a speech to a major evangelical confab, many Republicans still seemed skeptical of their presumptive nominee, while Democrats at a Planned Parenthood gathering were fired up about theirs.
A judge ruled that Robert Lewis Dear, charged with killing three people at a clinic in November, is not mentally capable of understanding the case. He will now go to a state psychiatric hospital.
Abortion rights opponents want the district attorney in Houston to resign and Texas Gov. Greg Abbott to appoint a special prosecutor to again investigate and indict Planned Parenthood in Houston.
When Texas passed laws designed to shut down Planned Parenthood clinics, it slashed the state's family planning budget. Of the 82 clinics that closed, only a third were Planned Parenthood.
The Texas grand jury investigating Planned Parenthood found no wrongdoing by the abortion provider, but it indicted two anti-abortion activists involved in making covert videos of the organization.
In one of several courtroom outbursts, Robert Lewis Dear, who is accused of killing three people at a Planned Parenthood clinic in Colorado, said he was guilty and won't go to trial.