Common purslane tolerates dry, hot, sunny conditions and spreads easily from May through September. It blooms during this time with yellow flowers. A 2,4-D herbicide is a good treatment for this summer weed.
Shepherd's purse is a winter annual that grows in disturbed soil. It produces seed heads in heart-shaped capsules. A pre-emergent herbicide can offer quick control of the weed in spring or fall.
Annual sowthistle is a summer weed and produces dandelion-like flowers that also turn into white puff balls in the fall. It grows tall and is controlled with the use of an herbicide containing clopyralid.
Speedwell is very common in yards across the country and grows mostly in the winter. Though it dies off by spring and summer, using a pre-emergent can help to keep it away in the colder months.
Spotted spurge gets its name from the maroon or purple spot in the center of the leaves. It also has reddish-purple stems. This weed grows annually and is treated by hand-pulling and both pre- and postemergent herbicides.
Lesser swinecress is extremely tolerant to mowing and heavy foot traffic and will spread easily throughout the lawn. It's important to fight this weed with a pre-emergent herbicide to keep it from taking over lawns and gardens.
Bull thistle is a biennial weed, meaning it takes two years to complete its life cycle. This plant infests everything from lawns to roadsides, causing a massive infestation and harming crops in a short time.
Canada thistle is a perennial weed that grows in most any soil and can be found in yards and gardens. A foliar systemic herbicide is the most effective solution to combating this summer weed.
Virginia buttonweed is a perennial weed that produces white, star-shaped flowers. It grows low to the ground and is difficult to remove by hand. Using herbicides with synthetic auxins is one way to remove this stubborn weed.
Virginia pepperweed is an annual weed that can quickly take over lawns thanks to its seed head. Though the seeds can be used as pepper on meals, they can cause a quick infestation if this weed isn't eliminated at the first sign.
Although you can consume wild carrot, it's a weed that can take over a landscape if it's not controlled in time. Don't mistake hemlock for wild carrot as it doesn't take much hemlock to kill a person after an hour or so.
Wild garlic emits a foul odor when you crush the bulbs, and it grows rapidly in flourishing lawns. Routine lawn maintenance combined with herbicides containing 2,4-D can help to prevent widespread growth.
