It thrives in cool, moist conditions. Blue vervain is a tall, perennial weed with slender spikes of small, blue to purple ...

They produce clusters of tiny violet flowers, though sometimes ... giving off a square appearance, and are purple-mottled at their bases. Healall weeds max out at 1 foot, which is why their ...

and other crops are often covered with small purple flowers called Striga. These eye-catching flowers are known as ‘witch weeds,’ as they survive and spread by parasitizing the roots of other ...

Twenty years later, crews still return to pull up any tiny seedlings and keep this ... investigated a glossy-leaved plant with pinkish-purple flowers. She had seen it growing as a shrub in a ...

Scrambling fumitory is a clambering annual weed that can grow at any time ... three leaflets with narrow long cotyledons. Flowers are conspicuous clusters of about a dozen pink florets, with a ...