Specialty Weed Controls

Boulder and Fort Collins Weed Control Services

Our organic weed control programs work great on broad-leaf weeds in the lawn, but organics do have a few limitations. Organic weed controls can control the majority of weeds in a lawn, but there are some very hard to control weeds that require special weed killers. Even though we use synthetic weed control products for very specific weeds, we choose products that are extremely low toxic to bees, people, pets, and are environmentally friendly. The specialty weed controls that we use are highly effective at controlling the targeted weeds.

Preventative Weed Control for Rock and Mulch Beds

Pre-Emergent Weed Control for Rock Areas

The best way to reduce the use of products like Roundup or Glyphosate is to prevent the weeds from growing in the first place. Organo-Lawn uses a very special weed control called Specticle to prevent weeds from growing in rock and mulch beds.

Specticle will prevent weed seeds from germinating for up to 10 months and it dramatically reduces weeds in hardscapes. This special weed control must be applied to the rock or mulch area prior to the weed seeds germinating. This means the application must be applied during a time of year that most people are not thinking about weeds. We perform Specticle applications during the months of November or February, if weather permits.

The best way to prevent weeds from growing in flower beds, gravel driveways, landscape beds, and hardscapes is to be proactive. This special pre-emergent weed control will virtually eliminate the need to hand pull weeds or use chemical products like Roundup.

Weed Control Rocks

Weed Control for Bindweed or Crabgrass

Bindweed Killer Boulder

Drive XLR8 is the most effective weed killer for bindweed in lawns. It also is a wonderful control for Crabgrass in grass.

Drive XLR8

If you have ever tried to control crabgrass or bindweed in your lawn you know it is extremely difficult and frustrating. The good news is there is a product called Drive XLR8 that is the most effective weed killer for bindweed and crabgrass. Luckily, not every lawn will have bindweed or crabgrass, but if your lawn does have a weed problem call our office to schedule an appointment.


Details about Drive XLR8
  • Has the lowest rating for a pesticide – at caution level.
  • In most cases, one application of Drive XLR8 will be sufficient to kill bindweed and crabgrass.
  • Unless there is major weed pressure we apply Drive XLR8 as a spot spray, targeting the bindweed and crabgrass.
  • Results are fast; Drive XLR8 will kill crabgrass in 3-10 days and bindweed in 7-14 days.
  • Drive XLR8 is not a pre-emergent weed control. If there are weeds that are not above ground, those weeds will not be controlled.
  • Drive XLR8 can be applied in lawn without damaging the grass. We can also apply Drive in native grass areas and rock or mulch beds.

Bindweed Information
  • Bindweed is a vine-like weed with arrow shaped leaves that that typically is seen in lawns, flower beds, and hardscapes between May - September.
  • Bindweed has a very extensive root system and often is seen with white, pink, or yellow flowers.
  • Bindweed can take over a whole lawn or native area if not treated, and is often seen in drought stressed areas.
  • It’s important to get control of the bindweed before it goes to seed because the seeds can stay viable in the soil for up to 50 years.

Crabgrass Information
  • Crabgrass is an annual grass that is lime green in color.
  • Crabgrass germinates in May and is typically visible in a lawn from sometime in June through the first hard freeze.
  • Crabgrass grows in stressed areas of a lawn, along the edges of the lawn near sidewalks, and in lawns that are cut too short.
  • Crabgrass has a purpose in Mother-Nature; it is designed to grow in bare areas to prevent erosion during the monsoon season.
  • The best way to prevent crabgrass from growing in a lawn is to mow the lawn tall and water the lawn according to the 1-2-3-2-1 lawn watering technique. This creates a dense lawn that will naturally prevent crabgrass from being able to grow.
Kill Crabgrass Lawn

Crabgrass is a lime green colored grass that doesn't show up in lawns until sometime in June.

Weed Control for Native Areas

Milestone Weed Control

Weed control in native grasslands and pasture areas requires a special weed control that doesn't harm grazing animals. The weed control we use in these areas is called Milestone. Since most native areas are healthy without needing to be fertilized, we offer Milestone as a weed killer specifically made for native areas that does not include any fertilizer.


Details about Milestone:
  • Milestone is very low toxic to people, pets, animals and the environment and it is on the EPA’s reduced risk list.
  • Unless the area being treated is inundated with weeds, we prefer applying milestone as a spot spray for weeds in native areas.
  • After the application is complete the weed control is rainproof within 1 hour.
  • Milestone weed control works quickly and weeds should start to die about 7 -10 days after an application, depending on temperatures.
  • All weed controls works best on young actively growing weeds. Milestone achieves 80-95% control rates during the spring and 60-85% control rates during the hot summer months.

Information about Native Areas:
  • Native areas include rangelands, native grass areas, pastures, and meadows.
  • The most common weeds we see in native areas in the Boulder and Fort Collin area are Canada thistle, musk thistle, puncture vine, kochia, alfalfa, myrtle spurge, and knapweed.
Pasture Weed Control

Native area weed control can only be performed with special herbicides that are approved by the EPA for use in these locations. We use a special weed control called Milestone which is permitted in these locations.


To schedule or discuss weed control services contact our office (303) 499-2000 Boulder or (970) 225-9425 Fort Collins!


FAQ- Specialty Weed Controls

What is the Best Weed Control for Canada Thistle in Pastures?

The best weed control for controlling Canada thistle in pasture grasses is Milestone. This special weed control will kill Canada thistle with one application and the weed will typically die within 7-10 days after the application. Milestone is also a wonderful weed control for other problem weeds that grow in pasture lands, native grass areas and meadows.

Weed Control Canada Thistle
Weed Control for Bindweed Boulder