Pineapple Mayweed Taken at Musselburgh on 27th June 2019 with Panasonic Lumix LX5 in macro mode. Taken at Strathclyde Park on 1st June 2020 using Nikon D500 with Sigma 105 mm macro lens. Pineapple Mayweed. Species: Order: Family: Habit: AKA: Matricaria discoidea. Asterales. Asteraceae. Annual Habitat: Blooms: Height: Feature: Roadsides and waste places. June-July. 5 - 30 cm This plant is not native to the UK. It was introduced here, probably Wales, from Oregon, USA in 1871 and has spread throughout Britain to become a very common sight indeed in roadsides and all sorts of waste areas. The name of the plant probably is due either to its pineapple-like scent, or from its pineapple-like flower heads.