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  • Can you use pre-emergent weed control in landscape beds?

  • For the few undesired weeds that emerge later in the season, a non-selective herbicide like Round-up can be used directly on the weed. Always be sure to read the label prior to applying pre-emergent weed control in your landscape beds. Applying Pre-Emergent: How to Choose the Ideal Locations?

  • When to use pre emergent and when not to?

  • Ahead, learn when to use pre-emergent and when not to. Early spring and fall are the most effective times to apply pre-emergent herbicides. Applying a pre-emergent herbicide will prevent seeds from sprouting, but the most effective times to use it are in the spring and again in the fall.

  • How long does preemergent herbicide last in flower beds?

  • If grass is invading your flower beds, preemergent herbicides are available that target many types of grasses. Preemergent herbicides don’t usually last for an entire season. They will typically stay in the soil for eight to 12 weeks before they begin to break down and lose their effectiveness.

  • Do pre-emergents keep weeds from sprouting?

  • Pre-emergents don鈥檛 keep just unwanted seeds from sprouting鈥攖hey keep all seeds from germinating, so hold off on using the product in a garden or flower bed until the desired plants sprout and begin to grow. Fall application: A lawn might appear virtually weed-free going into fall but then weeds suddenly appear.