And features compound basal leaves that consist of 3 lobed leaflets that grow up to 8 cm long. Each flower has 5 petals and grows at the end of a thin, green stalk. You can easily identify creeping buttercup by its glossy, golden yellow flowers. The seeds easily spread by wind and water, and the weed can quickly take over an area if left unchecked. If you find this weed growing in your yard it’s important not to let it go to seed. But it’s also a common and prolific weed in gardens that are uncared for. Spiny sowthistle is often encountered as a desert weed. And develops a basal rosette in the early stages of growth that looks similar to thistle plants. The plant flowers from June to August with yellow flowers that look similar to a dandelion. This annual weed is also known as prickly sowthistle and spiny-leaved sowthistle. The wooly feel of the leaves is responsible for another of the weed’s common names, woolly mullein. The leaves are thick, grey-green, and covered in fuzzy hairs. Developing a long spike of small yellow flowers at the top of the stem.Ĭommon mullein has giant oval-shaped leaves that grow up to 12-inches long and 5-inches wide. In the second year, a long central stem grows up to 7 feet tall. In the first year, the weed grows a rosette of large leaves. It’s an introduced plant in Australia and North America, where it’s now considered an invasive weed in many states. Common Mullein (Verbascum thapsus)Ĭommon mullein is a giant weed that’s native to Asia, North Africa, and Europe. Sometimes the leaves are hairy and sometimes they’re smooth. When dandelions set seed, the flowerhead is replaced by a seed puff of small seeds that are easily dispersed by the wind.ĭandelions have long, narrow, lobed leaves that grow in a basal rosette. The flowerhead consists of numerous florets and grows at the end of a long stalk. But you can find dandelions with pink and white flowers as well. Most dandelions are weeds with yellow flowers. And they all have a similar distinctive-looking flowerhead. There are more than 250 types of dandelions. Dandelions (Taraxacum)ĭandelions are one of the most common weeds to find growing on your lawn. As well as growing in fields, waste areas, and along roadsides. You’ll often see it spreading through thin and patchy lawns. Each leaflet grows up to ¾-inch long and has fine-toothed edges and a rounded tip. Similar to other species of clover, the leaves of the weed are trifoliate - each consists of 3 leaflets.

As they get older, the flowers turn from yellow to brown and become paper-like. And each flower head consists of many tiny yellow flowers clustered together. The large flowering heads grow at the end of small stalks. Each plant produces numerous flowers that grow on branching stems. It was introduced to North America in the 19th century where it’s now naturalized. It’s a biennial weed that’s native to northwestern Asia and northern Europe. Golden clover is also known as large trefoil and hop clover. Golden clover flower by Fornax, CC BY-SA 3.0, via Wikimedia Commons And you’ll usually find yellow hawkweed growing in sunny locations, although it can tolerate some shade. The weed spreads by seed, rhizomes, and creeping stems (stolons). And the weed causes problems in pastures by forming large monocultures that displace forage plants. It thrives in a range of man-made habitats including meadows and fields. And it’s considered a noxious weed in some US states. Yellow hawkweed is an invasive weed that’s difficult to control. But they’re not lobed and have hairs on both surfaces. Similar to dandelions, the leaves form a basal rosette. The weed has long, narrow leaves that grow up to 6-inches. A yellow hawkweed plant can produce up to 30 flower stems, each topped by 5-30 flowerheads. It flowers from May to July, producing compact clusters of yellow flower heads that grow at the top of bristly stems. The weed looks similar to the common dandelion.

Yellow hawkweed is also known as meadow hawkweed.

Here’s how you can identify some of the species you’re most likely to come across: Yellow Hawkweed (Hieracium caespitosum) Weeds with yellow flowers are among the most common types of flowering weeds. How Do I Get Rid Of Yellow Weeds In My Lawn? 16 Common Weeds With Yellow Flowers

Yellow buttercup flower