Johnsongrass

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

Common Johnsongrass Problems →

Johnsongrass 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.

Johnsongrass Root Rot →

Johnsongrass 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 🏡.

Johnsongrass is extremely dangerous if consumed. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian immediately. Johnsongrass is not recommended for homes with children, cats, or dogs.

Johnsongrass 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!

What Are Healthy Johnsongrass Roots →

Johnsongrass 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.

Johnsongrass grows vertically and new growth will emerge from the top of the plant.

Johnsongrass Lifecycle →

Johnsongrass Size Guide →

USDA Hardiness Zone
Johnsongrass can be grown outdoors in USDA Hardiness Zones 5a-9b. Find your local hardiness zone here.

Johnsongrass Hardiness Zones →

Is Johnsongrass a Weed? →

Johnsongrass can be propagated by division into new individual plants.

• Check to see if there is more than one plant. In some cases they may still be beneath the soil surface. If you feel confident, you may remove the soil to check for baby plantlets below!
• If there are multiple plants growing, unpot the plant and gently tug the plants apart, being careful not to disturb too many of the roots. They may be connected by large root segments which you may need to break to free the plantlet.
• Pot up the new plant in well-draining soil
• Repot the parent plant back into its original pot

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 Johnsongrass, 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!

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.

• Common Bugs Affecting Johnsongrass →

What Eats Johnsongrass? →

• Drooping Johnsongrass Leaves →
• Johnsongrass Dropping Leaves →
• Black Spots on Johnsongrass →
• Brown Spots on Johnsongrass →
• Johnsongrass Leaves Falling Over →
• Johnsongrass Leaves Curling →
• Johnsongrass Yellow Leaves →
• Johnsongrass Root Rot →
• Why Is My Johnsongrass Wilting? →