Plant Care Hairy Crabgrass

Hairy Crabgrass

About Hairy Crabgrass

Crabgrass is a weedy summer annual that can spread quickly and form colonies. It prefers full sun to part sun in moist to dry clay loams. It has spread to nearly every state in the country. Use a pre-emergence herbicide in late winter or early spring to prevent germination of seed.

Taxonomy

Digitaria sanguinalis
Digitaria
Poaceae
Poales

Also known as

Hairy finger-grass, Large crabgrass, Crab finger grass and Purple crabgrass

How to care for Hairy Crabgrass

💦 Water

How often to water your Hairy Crabgrass

Water needs for Hairy Crabgrass
0.5 cups
every 9

Hairy 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.

Calculate water needs of Hairy Crabgrass

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Hairy Crabgrass in your home

Light needs and placement for plant Hairy Crabgrass: 1ft from a window
1ft or less from
a window

Hairy Crabgrass love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Hairy Crabgrass does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Hairy Crabgrass in your home 🏡.

🪴 Nutrients

How to fertilize Hairy Crabgrass

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

💡 FAQs
⭐ Difficulty Level

Hairy Crabgrass can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!


💦 Water Needs

Hairy Crabgrass 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.


☀️ Sunlight Needs

Hairy Crabgrass 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 🏡.


🐶 🐈 👶 Toxicity

Hairy Crabgrass is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.


🪴 Soil

Hairy Crabgrass is very sensitive to dry soil, so choose a potting soil that retains moisture. A good soil will still drain well and contain lots of organic matter such as coco coir or sphagnum moss.


💩 Fertilizer

Hairy Crabgrass 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.


⬆️ ⬇️ Growth Pattern

Hairy Crabgrass grows along the ground and sends out shoots which will spread across the soil.


🌦️ Growing Outdoors

USDA Hardiness Zone
Hairy Crabgrass can be grown outdoors in USDA Hardiness Zones 3a-9b. Find your local hardiness zone here.


🍂 Yellow Leaves

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.

Overwatering and root rot are the most likely cause of problems in Hairy Crabgrass, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.

Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!


🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.


Care Summary for Hairy Crabgrass

Hairy Crabgrass

Hairy Crabgrass


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

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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