https://www.housetight.com/post/japanese-knotweed-in-inverclyde-what-every-homeowner-needs-to-know 2026-04-12 https://static.wixstatic.com/media/6d037b_75b59fb1c0ce473787456371405b077f~mv2.jpg Japanese knotweed spring shoot compared to asparagus spears — can you spot the difference?