About Japanese knotweed
Japanese knotweed is a super rare houseplant 🌿 that is a fun challenge to grow and needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.
Japanese knotweed likes soil that is well draining. You may want to supplement with a gentle, organic fertilizer throughout the peak growing season.
Japanese knotweed belongs to the reynoutria genus, and is native to Eastern Asia.
Also known as
How to care for Japanese knotweed
Japanese knotweed needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Japanese knotweed love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Japanese knotweed does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Japanese knotweed in your home 🏡.
Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Japanese knotweed after it doubles in size or once a year—whichever comes first.