Spring has arrived and with it will come all the joys of being outside enjoying your landscape…and weeds. Crabgrass, thistle, nutsedge and all of our other favorite perennial weeds will thrive this spring, especially because the of the mild winter that was not cold enough to permanently damage existing dormant seeds. Great! So, now what?
One of the most cost efficient and effective weed control methods is with the use of a pre-emergent herbicide. This is just what it sounds like; pre-emergent herbicides prevent weeds from emerging from seeds by interrupting the germination process as seeds move from dormancy to growth mode. It’s like putting down a barrier across the treated area that weeds can’t penetrate.
Most pre-emergent herbicides are granular or powder based and activated by water. Some pre-emergents are applied on their own and some are applied with other materials, like fertilizers. This gives pre-emergents the advantage of efficiency combined with a longer effective treatment period to help with extended weed control. Many pre-emergents have a 90 day efficacy if applied in ideal conditions. Since ideal conditions are pretty rare in real life, we suggest a 45 day inspection cycle which allows us the flexibility to re-apply material before weed pressure begins to increase.
In new or existing planting beds, pre-emergents are spread prior to new mulch. It is important to note that some pre-emergent herbicides can damage certain flowering perennials, annuals and bulbs that have not yet broken bud. It is very important to have an qualified and experienced applicator performing the applications to avoid any issues. The applicator must be able to read and follow the application instructions AND be able to positively identify plant material to ensure success.
Of course, any individual or company that applies herbicides and fertilizers for monetary compensation must be registered with the PA State Department of Agriculture. Registered individuals carry an ID card and registered companies are required to display their BU number on all vehicles that transport controlled chemicals and in all promotional materials. Hively’s BU number is 0299.
If you have a weed problem, or want to avoid having to deal with weed control, please contact our office for assistance. We love landscapes but we don’t like weeds!