Springtime Pre-Emergent Weed Control Treatment
As nature wakes up in early spring, so does weed growth in lawns and gardens. Pre-emergent treatment stops weed seeds from germinating in the first place, which is why the timing of the application matters as much as the treatment itself.
Early spring is the time to be proactive, and B's Weed & Pest Control Services provides pre-emergent weed treatment for lawns and landscaping across Reno, Sparks, and Carson City.
Best Time for Pre-Emergent Treatment
The best time to apply pre-emergent treatment depends on the weeds being targeted and the local climate, but the general guideline is early spring and early fall.
Early Spring
- Target weeds: many warm-season weeds begin germinating in early spring, including common weeds like crabgrass.
- Ideal time: apply pre-emergent treatment before soil temperatures consistently reach 55 to 60 degrees Fahrenheit (12 to 15 degrees Celsius), which is when those weed seeds start to germinate.
Early Fall
- Target weeds: for cool-season weeds, such as annual bluegrass, fall is the crucial germination period.
- Ideal time: apply pre-emergent treatment in early fall, before soil temperatures drop significantly, aiming for a stretch when daytime temperatures are consistently between 60 and 70 degrees Fahrenheit (15 to 21 degrees Celsius).
Pre-emergent herbicide works only when timing and application are right. Applying it too early or too late reduces how well it works, and climate variations from year to year can shift the ideal window. It is also essential to read and follow the label carefully, since some pre-emergent products carry specific guidance based on grass type, climate, and target weeds. A local weed control professional can time the application to the property's actual conditions.
Why Reno's Spring Timing Is Tricky
Reno sits around 4,500 feet in the high desert, and its springs are unpredictable. Several false spring warm spells often arrive in February and March, followed by cold snaps that can reach well into May. Air temperature alone is a poor guide: a sunny, south-facing bed against a wall warms weeks ahead of a shaded lawn on the north side of the same house, and the weeds in each germinate on different schedules. That is why the soil temperature, not the date on the calendar, decides when pre-emergent goes down.
Reno's weeds also run on two clocks. Summer annuals such as crabgrass and puncturevine, the source of the goathead burrs that flatten bike tires and hurt bare feet, germinate as the soil warms in spring. Winter annuals, including cheatgrass, germinate in fall and grow through the winter, which is why the fall application matters as much here as the spring one.
Getting the Most From a Pre-Emergent Treatment
- Water it in. Most pre-emergent products need to be activated by irrigation or rain within a few days of application, as the label directs.
- Leave the barrier alone. Aerating, tilling, or digging after treatment breaks the barrier and lets weeds through the gaps.
- Plan any seeding around it. Pre-emergent herbicide stops grass seed from germinating just as it stops weed seed, so overseeding a lawn has to be scheduled separately.
- Remember what it does not do. Pre-emergent treatment prevents new weeds; it does not kill weeds already growing. Those need a post-emergent treatment.
Rock Beds and Landscaped Areas
Many Reno properties rely on rock and gravel landscaping, and weeds love it: seeds blow in and lodge between the stones, where moisture collects and nothing competes with them. Pre-emergent treatment works especially well in rock beds, since there is no lawn to protect and the barrier can cover the whole area. Treating rock and gravel before germination keeps them clean without the constant hand-pulling they otherwise need.
How Long a Treatment Lasts
A pre-emergent barrier does not last all year. Most products remain effective for a few months, depending on the product, the rate, and how much water the treated area receives, which is why a spring application does not cover fall germination. The two-application schedule, spring and early fall, is what keeps a property covered through both germination seasons.
Why Choose Pre-Emergent Treatment?
Prevention is the most effective weed control. Instead of waiting for weeds to sprout and then trying to eliminate them, pre-emergent treatment creates a barrier that stops germination, so weeds never get the chance to establish themselves. That saves the time and expense of treating an established infestation later in the season and keeps a lawn looking consistent all year rather than patchy once weeds take hold.
Advantages of Choosing B's
- Expertise. B's technicians know the weeds that are common in the Reno area and tailor treatments to them.
- Proactive solutions. A treatment applied ahead of the germination window stops weeds before they become a problem.
- Environmentally friendly. B's prioritizes environmentally friendly practices, using treatments that are effective against weeds while minimizing harm to the ecosystem, and safe for families and pets.
- A customized approach. Every lawn is different, and B's takes a personalized approach to each property.
Be Ready for a Beautiful Spring Landscape
Scheduling pre-emergent treatment now is the proactive step that prevents weed problems before they start, leading to a lush, green lawn and weed-free garden beds through the season. B's has provided weed and pest control to the Reno area since 2002. See Reno weed control for the full range of weed services.