English ivy (Hedera helix) is the quintessential type of ivy ... This ivy produces umbels of bulbous green flowers from late summer until late fall, followed by black berries.

The flowers, though small ... The transformation of hedera helix from juvenile to adult form is a remarkable example of plant dimorphism. The change occurs due to complex hormonal shifts triggered ...

The Washington State Department of Agriculture is considering adding English ivy (Hedera helix) and Atlantic ivy (Hedera hiberica) to the Noxious Weed Seed and Plant Quarantine. The rule prohibits ...