Eagle-eyed gardeners might have noticed that most garden weeds produce yellow flowers. This may have something to do with the fact that insects prefer yellow flowers, further enhancing the weed's ...

The flower heads are a fairly distinctive colour as well, being about 2-4 cm in diameter, dark purple in the middle with pale yellow ray florets on the outsides, and a deeper yellow at the base of the ...

Sow thistle is an annual weed that can establish at any time of the year ... It could also perhaps be confused with hawksbeard due to its leafy flower stem with yellow flowers. Although not as prickly ...

A weed is simply a plant that is growing where it is not wanted ... For example, if you hold a buttercup under your chin and a yellow shadow appears, it means you like butter.