Japanese knotweed can grow up to four inches a day and forms dense thickets, which can kill native plant species.
It’s most visible between February and November, and in the summer it has clusters of white flowers.
Data from Environet shows which areas are currently having a breakout of the species.
Ipswich has the most sightings with 133 within five miles, which is more than in April, which was 54.
48 sightings have been reported in Stowmarket, and 54 cases have been reported in Needham Market.
There are 36 sightings within five miles in Woodbridge, and 22 sightings in Felixstowe, which is the same amount as July.
Also, Bury St Edmunds has 21 sightings and Sudbury has 50 sightings within five miles.
In Saxmundham there have been 40 sightings, and Leiston also has 40 sightings.
Framlingham has the least amount, at nine sightings.
Environet estimates that approximately 5% of homes across the UK are currently affected by Japanese knotweed, either directly or neighbouring an affected property.
AloJapan.com