Plant Care German Knotgrass

German Knotgrass

Also known as

German-knotweed, annual knawel and knawel

Taxonomy

Scleranthus annuus
Scleranthus
Caryophyllaceae
Caryophyllales

How to care for German Knotgrass

Water

How often to water your German Knotgrass

Water needs for German Knotgrass
0.5 cups
every 9

German Knotgrass needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Tucson, Arizona.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of German Knotgrass

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
Light

Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Plant care guide for German Knotgrass in Tucson, Arizona

Tucson, Arizona

48% Low

Growing German Knotgrass in Tucson right now

Light needs for plant German Knotgrass in Tucson, Arizona

Plant growth potential is currently medium 👌

January 30th, 2023

Sunlight energy as measured by “net radiation” in Tucson is currently medium 👌.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in determinin…

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Light needs for plant German Knotgrass in Tucson, Arizona

Sunlight will increase by 23.4% ☀️

January 26th, 2023

Tucson is trending towards greater sunlight intensity!

The amount of sunlight in Tucson is expected to increase by 23.4% over the next 2 weeks to an average of 13.0 megajoules of energy per m2 per…

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Light needs for plant German Knotgrass in Tucson, Arizona

Daylight will increase by 0.8 hours 📈

January 30th, 2023

This month, Tucson is getting an average of 9.4 hours of clear sky sunlight per day.

Hours of daylight will increase by 7.5% over the next two weeks. Your plants will get 10.8 total hours of dayli…

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Finding light for German Knotgrass in your home

Light needs and placement for plant German Knotgrass: 1ft from a window
1ft or less from
a window

German Knotgrass love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Tucson, Arizona ⛅.

German Knotgrass does not tolerate low-light 🚫.

Nutrients

How to fertilize German Knotgrass

Nutrient, fertilizer, and repotting needs for German Knotgrass: repot after 2X growth

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 German Knotgrass after it doubles in size or once a year—whichever comes first.

When to repot German Knotgrass

Nutrient needs for plant German Knotgrass in Tucson, Arizona

Is this a good time of year to repot? No ⏳

January 26th, 2023

The growing potential in Tucson is low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's best to repot …

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FAQs
Water Needs
Sunlight Needs
Toxicity
Soil
Growth Pattern

Care Summary for German Knotgrass

German Knotgrass

German Knotgrass


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

Based on your location in Tucson, Arizona, the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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