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<p>Pre-emergent herbicide, when applied at the right times of year, will control weed populations before you see them. They do this by inhibiting seeds from forming roots, thus killing them as they germinate.</p>
<p>Eradicating weeds when they germinate is the most efficient way to control weed populations is lawns, flower beds, and even gravel driveways and walkways. It’s time-efficient and cost-effective, saving you months of combating weeds by mowing, weed whacking, hand pulling, digging, and from using costlier products to spray out weeds.</p>
<ul>
<li>25 lb. bag covers up to 4,000 sq. ft.</li>
<li>50 lb. bag covers up to 8,000 sq. ft.</li>
<li>Contains 16-4-8 + Iron plus Barricade pre-emergent herbicide</li>
<li>This pre-emergent contains a high amount of Nitrogen, so review the "when not to apply" exceptions below for your type of lawn.</li>
</ul>
<p><br></p>
<p><em>Apply only at the recommended rate.</em></p>
<p>Use our <a href="https://www.supersod.com/collections/tools-accessories/products/super-sod-walk-behind-spreaders-lawn-care" title="purchase Super-Sod's yellow walk-behind spreader">yellow walk-behind spreader</a> to distribute this granular product.</p>
<p><strong>When to apply pre-emergent herbicide:</strong></p>
<ul>
<li>Apply 16-4-8 with Barricade to established <strong>Tall Fescue</strong> lawns in late winter and early spring to feed and prevent weeds. <meta charset="utf-8">If you've already fertilized your Tall Fescue with nitrogen, then choose <a href="https://www.supersod.com/collections/lawn-care-products/products/0-0-7-pre-emergent-herbicide" title="0-0-7 with pre-emergent">0-0-7 with pre-emergent</a> because it doesn't contain nitrogen.</li>
<li>Apply 16-4-8 with Barricade to established <strong>Bermuda</strong> and <strong>Zoysia</strong> lawns in spring during "green up" to feed and prevent weeds, usually from mid to late April.</li>
<li>Apply in the morning before temperatures rise above 80 degrees; do not apply during the heat of the day.</li>
<li>Apply it after one full growing season when your lawn in fully rooted in and you can no longer pull up areas of the sod, after you’ve mowed it at least three times, and after you can no longer see the seams.</li>
</ul>
<p><br></p>
<p><strong>When not to apply pre-emergent herbicide:</strong></p>
<ul>
<li>Do not apply this product or any pre-emergent herbicide if you're planning on reseeding your lawn because it will inhibit germination of that seed too. If you have applied pre-emergent, wait 3-4 months before planting seeds, depending on climate conditions.</li>
<li>
<strong>When laying new sod:</strong> Do not apply pre-emergent <em>when</em> laying sod because it will inhibit root formation if applied too soon. Likewise, do not apply pre-emergent <em>before</em> laying new sod - if you have applied pre-emergent, wait 3-4 months (depending on climate conditions) before laying new sod.</li>
<li>Do not apply to <strong>Centipede</strong> due to the high nitrogen; choose<span> </span><a href="https://www.supersod.com/collections/lawn-care-products/products/0-0-7-pre-emergent-herbicide" title="link to read about 0-0-7 pre-emergent">0-0-7 with pre-emergent</a><span> </span>instead</li>
<li>Don't apply 16-4-8 with Barricade to <strong>Tall Fescue</strong> in late spring or summer; apply it only during cool months; due to high Nitrogen, don't apply to Tall Fescue during warm months.</li>
<li>Don't apply 16-4-8 with Barricade to <strong>Bermuda</strong> and <strong>Zoysia</strong><span> </span>lawns in fall when going dormant or in winter or spring before green up; due to high Nitrogen apply it only when these lawns are actively growing. Instead, apply <a href="https://www.supersod.com/collections/lawn-care-products/products/0-0-7-pre-emergent-herbicide" title="read about 0-0-7 pre-emergent product">0-0-7 with pre-emergent</a> in fall and winter.</li>
<li>If you laid warm season sod in autumn, chances are it will need one full growing season (summer) to root in and fill in the seams, thus skipping the winter and spring applications. If you laid sod in the autumn, here is a general application timetable:</li>
<ul>
<li>
<strong>Zoysia</strong> - Safe to apply after Zoysia sod is 12 months old</li>
<li>
<strong>Centipede</strong> - Due to high nitrogen, <strong>not safe</strong> for Centipede at all</li>
<li>
<strong>Bermuda</strong> - Safe to apply after *Bermuda sod is 6 months old</li>
<li>
<strong>Tall Fescue</strong> - Safe to apply after Tall Fescue is 4 months old</li>
</ul>
</ul>
<p><br></p>
<p>*<a href="https://www.supersod.com/collections/sod/products/tiftuf-bermuda-sod-1" title="link to learn more about TifTuf Bermuda lawns">TifTuf Bermudagrass</a> is the quickest sod to establish and beats expectations for filling in the seams. If you lay the TifTuf Bermudagrass variety late summer and it’s fully rooted in and no seams are visible, it’s safe to apply the winter application of pre-emergent herbicide.</p>
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