CONTACT / SYSTEMIC HERBICIDES

The combination of recent monsoon rains and higher temperatures makes September an ideal month for weeds to pop up. To combat these, you’ll need to apply post-emergent herbicides. There are two types of herbicides: contact and systemic.

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Contact herbicides only kill the plant parts that are contacted. Systemic herbicides are absorbed by the roots or foliage and spread throughout the plant. If you choose systemic herbicides, be careful not to misapply the chemical to the plants, grass, and shrubs you don’t want to kill!