
Clustered Flatsedge
Also known as
clustered flat sedge, dense flat sedge and Dense Flat-sedge
Taxonomy
Cyperus congestus
Cyperus
Cyperaceae
Poales

How to care for Clustered Flatsedge
How often to water your Clustered Flatsedge

every 9
Clustered Flatsedge 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
Finding light for Clustered Flatsedge in your home

a window
Clustered Flatsedge 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 region to see how the current weather in your area affects the placement of Clustered Flatsedge in your home 🏡.
How to fertilize Clustered Flatsedge

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 Clustered Flatsedge after it doubles in size or once a year—whichever comes first.
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Here’s my umbrella papyrus “Captain Weed”
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Cat grass outside I have my cat grass seed planted outside, is it ok? I know it’s not supposed to get direct sun, so I have a white tshirt covering the pot. I would bring it inside, but the pot I have it in is screwed into my deck, and I forgot about that part until it was too late. Any help?
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Harvesting & growing cat grass seeds I actually thought this cat grass was dying a couple months back so I put it outside and forgot about it. When I eventually checked on it I discovered not only was it still alive, but it was also producing seed pods. When I try google I mostly get results about planting purchased seeds and can’t find much about harvesting&planting seeds from your own plants. Are these seeds ready for harvest and will they grow into more cat grass if planted? If so, how would I prepare them for planting?
Clustered Flatsedge 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
Clustered Flatsedge may have difficulty thriving and will drop leaves 🍃 without ample sunlight. Place it less than 3 feet from a window to maximize the potential for growth. Select your region to see how the current weather in your area affects the placement in your home 🏡.
🐶 🐈 👶 Toxicity
Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.
🪴 Soil
Clustered Flatsedge 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
Clustered Flatsedge 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.
🧐 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 Clustered Flatsedge
Clustered Flatsedge
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.
