When necessary, the Parks Department treats turf and flowerbed spaces with herbicides to control and inhibit the growth of noxious or invasive weeds when mechanical removal is not feasible.  All treatment activities are regulated per the Adopted Herbicide Policy and Practices.pdf .  Any application of herbicide is done by a certified Pesticide Applicator and all precautions are taken to ensure that there is no danger to the public prior to, during, or after applications.

Below is a list of Parks properties that were treated with herbicides (Crossbow & Killzall) on 8/15/2017:

11th Street Walkway
15th Street Triangle
17th Street Flowerbed
8th Street Triangle Flowerbed
9th Street Park
Doughboy Monument
Garden of Surging Waves
Peoples Park
River Walk 3rd-39th
West Bond Triangle
Portal Park
Customs House

Below are links to labels of pertinent herbicides with information on their toxicity, residual presence, and active ingredients:

Killzall Label