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European knotweed (Polygonum arenarium) Care Guide
Care guide for European knotweed: light, watering, humidity, soil and temperature, based on the species' botanical profile.
📷 Svitlana Kyiak · CC BY 4.0 · GBIF/iNaturalist
Care at a glance
WaterWater roughly every 7 days, let the top 2-3 cm of soil dry out between waterings.
TemperatureTemperate: 12-24 °C (54-75 °F).
SoilWell-draining mix, neutral pH (7.5-8.0).
Growthmoderate growth. Mature height ~0.9 m (3.0 ft).
Origin
Native to: Albania, Bulgaria, Czechia-Slovakia, East Aegean Is., East European Russia, France.
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