Broad Leaf Weeds
What to Expect From Today’s Treatment
Today’s application consists of complex liquid bio-fertilizer, with nitrogen treated to minimize volatization (movement into the atmosphere) and leaching (movement through soil).
Plus lawns also receive SoilSeeds®* (organic microbes to aid in nutrient release and reduce thatch) and SuperTrace®* (thirteen essential trace minerals in organic acids).
Visible broadleaf weeds, e.g. dandelions, clover, chickweed, etc, are treated with our targeted weed treatment method. Our specialized spray guns allow individual weed treatment while fertilizer is being applied, greatly reducing the amount of herbicide used.
We are not using pre-emergence herbicides, so expect new weed seedlings to appear over the course of the growing season. Repeated treatments are recommended to achieve better control.
Several weeks may pass before the treated weeds begin to die. Questions or concerns should be addressed within 30 days. After 30 days, we cannot confidently determine whether the presence of weeds is due to new growth, compromised conditions, or treatment failure. We have chosen the best available products, but there are variables that can reduce the effectiveness of herbicide:
- Lack of soil moisture. When dry conditions prevail, weeds enter a dormant state, shutting down the processes that respond to herbicide, and control is compromised.
- Rainfall. Modern herbicides are designed to work on contact, however, we get the best results when it’s not actively raining during application.
- Weed species. Certain varieties of weeds are hardier, and often take repeated applications to gain control. Clover, violets, and buttercup are among the hardier species.
It may be tempting to pull dying weeds, but please allow the treatment to run its course without interference. If you must yield to the temptation to pull or dig, please try and get all the roots.
Delay 3 weeks from treatment date before planting new grass seed.
Weed grass invasion is common in our area and will occur quickly, even in new sod lawns. The most prevalent weed grass types are annual bluegrass (poa annua), velvetgrass and bentgrass.
How they get started:
The dominant species of grass sold as seed and grown on sod farms in this area is perennial ryegrass. Because it is a bunch grass that doesn’t spread, there is vacant soil between the plants, where weed grass and broadleaf weeds can, and will, germinate.
The invaders either germinate from seed, as with annual bluegrass, or from underground growth parts called rhizomes that may be in the on-site soil at planting, or in imported topsoil. Without fumigation, these rhizomes will grow into visible plants. Unfortunately, even with a perfect start, new lawns will have visible weed grasses within the first three years without steps to keep them out.
- Continue a high quality fertilizer and pest management program (like the Greenskeeper Plus program) to keep the turf in top shape.
- Aerate, top-dress with sand, and over-seed yearly to keep the grass plant population high. This is very important! We have recommendations for local firms that provide these services.
- Stay ahead of young weed grasses by pulling and/or spot treating with RoundUp®.*
* We sell a tool called "Weed Wand" for approximately $35, delivered to your door, that makes the spot treatments easy. The wand can be filled with RoundUp® herbicide solution, and then it’s a simple process of pressing the sponge tip on the weed grass. It kills an area about the size of a silver dollar with one press of the tube. We’ll deliver one to you, just give us a call.