How much sunlight does my Giant Knotweed need?

Giant Knotweed requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

What type of soil should I use for my Giant Knotweed?

Giant Knotweed does best in well-draining soil . A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!

Should I fertilize my Giant Knotweed?

Giant Knotweed is a fast growing plant and may deplete the nutrients in its soil over time. Replenish them with a gentle organic fertilizer or compost every 1-2 months depending on your location and season. Fertilize more often during the growing season and in warmer and brighter climates.

Giant Knotweed

Q: How often should I water my Giant Knotweed?

Giant Knotweed prefers for the soil to dry out between waterings and should be watered regularly . Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Also known as

Giant Knotweed and Sakhalin knotweed

Taxonomy

Scientific name

Reynoutria sachalinensis

Genus

Reynoutria

Family

Polygonaceae

Order

Caryophyllales

How to care for Giant Knotweed

Water

How often to water your Giant Knotweed

Giant 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.

Water 0.5 cups every
9

Does your plant get direct sunlight?

No Yes

Select the pot size