weeds growing on side of house

Weeds growing on side of house

The Spruce / Jayme Burrows

When to Kill Pavement Weeds

Some grasses and weeds thrive in the heat. Crabgrass, for instance, is a warm-season annual grass that thrives in driveway and patio cracks. Its seeds are very tiny and can penetrate the smallest cracks. Quackgrass is even more diabolical because it is a perennial weed that can survive even if just small pieces of root remain beneath the slab. If the exposed portion of the grass is removed, a new shoot will pop up in no time at all.

Click Play to Learn How to Get Rid of Weeds

Successful weed control begins with knowing your foe's likes and dislikes and habits. In their own way, weeds are marvels of genetic evolution. s

Denman & Co.
401 W. Chapman Ave.
Orange, CA 92866
714/639-8106
Ball weeder

Think it’s an overstatement to call it the war against weeds? Here’s what you’re up against.

Raindrip Inc.
2250 Agate Ct.
Simi Valley, CA 93065
www.raindrip.com
877/237-3747
Request the free “Drip Watering Made Easy” guide.

Weeds can’t survive without moisture. In areas with little or no summer rain, drip irrigation or soaker hoses help prevent weed seeds from sprouting by depriving them of water. These systems deliver water to the root zone of plants at the soil level. The soil surface and area surrounding the plants stays relatively dry. In contrast, overhead sprinkler systems spray water over the entire soil surface and supply both garden plants and weeds with water.

Where to Find It

Spread Landscape fabric and cut it to fit around plants. Photo by Saxon Holt

True Temper Hardware
Box 8859
Camp Hill, PA 17011
800/393-1846
Scuffle hoe

Controlling weeds is a fight you can’t win entirely because they always grow back. But you can keep weeds under control by depriving new ones of the conditions they need to take root in the first place. Let’s look at how to prevent weeds from growing.

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The frequency and timing of your fertilizing efforts are also crucial to healthy lawns. Both vary depending on your lawn type and the length of your growing season. Most northern lawns need only one or two applications of fertilizer annually—once in fall and sometimes a second time in spring. Southern grasses might require three feedings—early to mid-spring just after the grass greens up, early summer and again in early fall.

A single redroot pigweed is able to produce up to 30,000 seeds in a season. And those seeds can remain alive in the soil for 70 years waiting to sprout and overrun your perennial border at any time.