Plant Care Southern crabgrass

Southern crabgrass

Also known as

Tropical finger-grass, Tropical crabgrass and Summer grass


Digitaria ciliaris

How to care for Southern crabgrass


How often to water your Southern crabgrass

Water needs for Southern crabgrass
0.5 cups
every 9

Southern crabgrass 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

Does your plant get direct sunlight?

Select the pot size


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.

Select a city to check sunlight intensity

Finding light for Southern crabgrass in your home

Light needs and placement for plant Southern crabgrass: 3ft from a window
3ft or less from
a window

Southern crabgrass may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your city to see how the current weather in your area affects the placement of Southern crabgrass in your home 🏡.


How to fertilize Southern crabgrass

Nutrient, fertilizer, and repotting needs for Southern crabgrass: 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 Southern crabgrass after it doubles in size or once a year—whichever comes first.

Care Summary for Southern crabgrass

Southern crabgrass

Greg recommends:


0.5 cups every 9 days


< 3ft from a window


Repot after 2x growth

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

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