Did you come across a plant with yellow blooms in the garden that you haven’t planted? It might be one among the Weeds with Yellow Flowers!
Have you been fascinated with canary blooms growing around in your garden and unsure what the plants are? Have a look at some of the best Weeds with Yellow Flowers that can help you learn more!
Read on to find out the beneficial weeds in a garden here
Weeds with Yellow Flowers
1. Bird’s Foot Trefoil
Botanical Name: Lotus corniculatus
This perennial legume can grow up to 3-5 feet tall, producing yellow flowers in a whorl pattern. Bird’s Foot Trefoil can be helpful in soil erosion control and is quite invasive.
2. Wild Parsnip
Botanical Name: Pastinaca sativa
Wild Parsnip is a herbaceous weed and an invasive plant that can thrive in many different soil conditions – dry and wet. It is not only harmful to other plants but can also cause chemical burns on human skin.
3. Purslane
Botanical Name: Portulaca oleracea
Purslane is an annual weed that can grow up to 5-6 inches tall and 1-2 feet wide. This drought-tolerant plant produces yellow flowers with fleshy, edible leaves. It is one of the best Weeds with Yellow Flowers!
Learn about growing Purslane in containers here
4. Canada Goldenrod
Botanical Name: Solidago canadensis
Canada Goldenrod with sunny flowers thrives best in bright, moist conditions. The flowers bloom from August to October in a pyramid formation.
5. Wild Radish
Botanical Name: Raphanus raphanistrum
You can find Wild Radishes with pale yellow flowers in vegetable gardens during spring and summer. This weed can grow in any soil type and even thrive in an acidic growing medium.
6. Common Evening Primrose
Botanical Name: Oenothera biennis
Common Evening Primrose is often used by Native American tribes as a source to treat pain. The yellow flowers open up only in the evening, and you can spot them in woodland fields.
7. Yellow Nutsedge
Botanical Name: Cyperus esculentus
Yellow Nutsedge is considered one of the world’s worst agricultural pests. It can put many crops in danger and can be challenging to control.
8. Common Ragwort
Botanical Name: Senecio vulgaris
Common ragwort is an annual plant of the daisy family that can germinate in summer, spring or fall. Its yellow blooms are most prevalent for butterflies. It is one of the best Weeds with Yellow Flowers!
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9. Yellow Rocket
Botanical Name: Narbarea vulgaris
With dark green, shiny leaves, Yellow Rocket with yellow flowers can grow 6-8 inches tall. It is also called the Mustard Flower and can be found in farmland and pastures.
10. Narrow-Leaf Plantain
Botanical Name: Plantago lanceolata
You can spot a Narrow-Leaf Plantain with tiny, yellow blooms in almost all lawns. It thrives best in compacted, alkaline, dry soil and can grow in any condition.
Find the best vines with yellow flowers here
11. Creeping Buttercup
Botanical Name: Ranunculus repens
Creeping Buttercup is another common weed with yellow-colored flowers. This is one of the most invasive Weeds with Yellow Flowers, but the plant is relatively easy to pull out when necessary.
12. Marsh Yellowcress
Botanical Name: Rorippa palustris
Marsh Yellowcress grows as a short-lived perennial that causes trouble for the nursery and vegetable crops. It produces small flowers and toothed leaves with shallow roots. If you want to grow Weeds with Yellow Flowers, try this!
13. Yellow Salsify
Botanical Name: Tragopogon dubius
Yellow Salsify is a broadleaf perennial or biennial, usually with a short life span. It can grow up to 1-2 feet wide and 2-3 feet tall, producing yellow flowers, edible roots, and leaves. This plant is also called the Wild Oysterplant.
14. Common St. John’s-Wort
Botanical Name: Hypericum perforatum
Common St. John’s Wort is a weed with yellow flowers that usually bloom in July and August in the Northern United States in July and August. This plant is toxic for grazing livestock, and over-exposure can cause skin lesions.
15. Lesser Celandine
Botanical Name: Ficaria verna
Lesser Celandine is a typical woodland, lawn, and garden weed with tiny, yellow flowers. It can spread aggressively, self-pollinate, and reproduce through its root system. This is one of the most invasive Weeds with Yellow Flowers.
Check Out some of the best weed-killer ideas
16. Yellow Sorrel
Botanical Name: Oxalis stricta
Yellow Sorrel can grow up to 18-20 inches tall with light green leaves. The cup-shaped flowers are small and usually bloom in fall and summer.
17. Cypress Spurge
Botanical Name: Euphorbia cyparissias
Cypress Spurge is a bushy ground-covering weed that can grow up to 1-2 feet tall. It is also called Graveyard Moss, Graveyard Weed, and Bonaparte’s Crown. It is one of the best Weeds with Yellow Flowers!
18. Black Medic
Botanical Name: Medicago lupulina
Black Medic is a tiny weed plant belonging to the pea family, and you can easily spot it in gardens, lawns, and waste spaces. The plant is difficult to remove because of its deep taproot.
19. Golden Clover
Botanical Name: Trifolium aureum pollich
Golden Clover is a biennial weed that blooms from June to August and often grows in meadows that can encroach on yards. Palmate Hop Clover is named after its elder flowers that look like hops.
20. Creeping Cinquefoil
Botanical Name: Creeping cinquefoil
Creeping cinquefoil is among the most common weeds in gardens and usually neglected lawns. The plant can spread aggressively through its creeping stems and is one of the most invasive Weeds with Yellow Flowers.
21. Butterweed
Botanical Name: Packera glabella
Butterweed is another common weed with yellow flowers commonly found in the southeastern United States. When broken, the stems and leaves exude a buttery, yellow substance. It is one of the best Weeds with Yellow Flowers!
22. Dandelion
Botanical Name: Taraxacum officinale
Dandelions are deeply rooted perennial weeds that bloom from March to November. The yellow, cheerful flowers are common, and children blow their seeds to the winds for wishes.
Here are some magical potions for killing weeds
23. Skeletonweed
Botanical Name: Chondrilla juncea
Skeletonweed belongs to the daisy family and is native to Europe. This biennial or annual herb can reproduce via seeds and is one of the most invasive Weeds with Yellow Flowers.
24. Oxalis
Botanical Name: Wood sorrels
With small yellow flowers and three heart-shaped leaves, this common weed is usually found in gardens, cracks of sidewalks, and lawns.
Oxalis is challenging to control because it can reproduce via bulbs and seeds, making it one of the most invasive Weeds with Yellow Flowers.
25. Wintercress 
Botanical Name: Barbarea vulgaris
Wintercress can be commonly found in gardens, along roadsides, and in open fields in Northeastern America. This annual winter weed produces bright yellow flowers in early spring.
26. Garden Loosestrife
Botanical Name: Lysimachia vulgaris
This perennial weed can reach up to 2-3 feet tall and produce tiny yellow flowers. It can be commonly sighted in damp places such as ditches, stream banks, and wet meadows. It is one of the best Weeds with Yellow Flowers!
27. Spanish Broom
Botanical Name: Spartium junceum
Spanish Broom is native to Northern Africa and Europe. This evergreen shrub can grow up to 10-15 feet tall with yellow flowers, slender branches, and small, dark green leaves. This is one of the most invasive Weeds with Yellow Flowers.
28. Sow Thistle
Botanical Name: Sonchus arvensis
Sow Thistle is easily found in many environments like meadows, marshes, roadsides, beaches, lakes, river shores, woods, and lawns. This perennial weed produces yellow flowers that belong to the daisy family and is native to Europe.
29. Yellow Toadflax 
Botanical Name: Linaria vulgaris
Yellow Toadflax is usually found along roadsides and in gardens. This perennial weed can grow up to 1-2 feet tall with bright yellow flowers in clusters at the top from May-September.
Check out our article on the best edible weeds here
30. Ragwort
Botanical Name: Jacobaea vulgaris
Ragwort is a common wildflower native to northern Eurasia and usually grows in dry and open places like trails, along roadsides, and pastures. This perennial weed with yellow flowers is invasive that can sicken grazing animals.
31. Grass-leaved Goldenrod
Botanical Name: Euthamia graminifolia
Euthamia graminifolia is native to North America and is called Flat-Top Golden top and Grass-Leaved Goldenrod. This perennial weed produces long thin stems that vary from plant to plant, with more or fewer branches and yellow blooms.
32. Yellow Hawkweed
Botanical Name: Hieracium caespitosum
Yellow Hawkweed is also called Meadow Hawkweed, and it looks identical to Dandelion. It produces up to 10-30 yellow flower heads from May-July. This is one of the most invasive Weeds with Yellow Flowers.
33. Yellow Lantana
Botanical Name: Lantana camara
If you want to grow one of the most beautiful Weeds with Yellow Flowers, then this is it. This plant can grow in almost any growing condition and stands out with its bunch of canary yellow blooms.
Find the best Lantana varieties here
#28 sow thistle has the wrong photo of dandelions on it. Sow thistle is tall & spindly with usually no more than 4-5 flowers per stem. Flowers are 1 layer, not puffy like dandelions.
Sow Thistle has the wrong picture!!
Ps. Any reason rangy mullein not included here? (Not that I blame you much lol – they can get huge, & last well past summer!) Tho the flowers last too – I just haven’t personally seen any of our many bees/butterflies on these giants..?