Smooth false buttonweed (Spermacoce glabra)

Also known as: Smooth Buttonweed, Glabrous False Buttonweed

The species is also found in southern Mexico (Tabasco and Campeche), Honduras, and various parts of South America, including Colombia, Venezuela, Ecuador, Brazil, Paraguay, Uruguay, and Argentina.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Smooth false buttonweed

Lifespan

Perennial

Plant Type

Herb, Shrub

Plant Height

up to 50 cm

Spread

N/A

Leaf Color

Green

Flower Size

approximately 0.5 cm

Flower Color

White

Images of Smooth false buttonweed

Quickly Identify Smooth false buttonweed

To identify Spermacoce glabra, look for a herbaceous plant with smooth (hairless) stems and opposite leaves. The flowers are small, white, and tubular, typically clustered at the leaf axils.

Scientific Classification of Smooth false buttonweed

Phylum

Vascular plants

Class

Dicotyledons

Order

Gentianales

Family

Madder

Genus

Spermacoce

Species

Smooth false buttonweed

Planting and Growing of Smooth false buttonweed

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-8 hours

Ideal Temperature

70-85℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Smooth false buttonweed?

For Spermacoce glabra, it is crucial to water thoroughly but not excessively. The goal is to moisten the soil until water drains from the bottom of the pot. Around 200 ml should suffice each time, ensuring even distribution to avoid any dry spots in the soil.

What are the symptoms of an underwatered Smooth false buttonweed? ›

What should I do if my Smooth false buttonweed is not getting enough water? ›

What are the symptoms of an overwatered Smooth false buttonweed? ›

How to save an overwatered Smooth false buttonweed? ›

What Are the Sunlight Requirements for Smooth false buttonweed?

Sunlight Requirements: Partial sun

Duration of light: 4 to 6 hours

Spermacoce glabra ideal light range is partial sunlight. Optimal lighting helps promote healthy growth patterns, vigorous blooming, and reduces stress-related damage to the foliage.

What type of sunlight does Spermacoce glabra prefer? ›

How can I achieve ideal light exposure for Spermacoce glabra? ›

What are the benefits of ideal lighting for Spermacoce glabra? ›

What Is the Ideal Temperature Range for Smooth false buttonweed?

Ideal Temperature: 70 ~ 85℉

The ideal temperature range for cultivating Spermacoce glabra is between 70°F and 85°F. This range provides a warm environment that closely mimics the plant's natural habitat, ensuring healthy growth and optimal development.

What Soil is Best for Smooth false buttonweed?

Soil type: Sandy loam, Loam

Soil PH: 6.5 ~ 7.5

Spermacoce glabra thrives in soil that provides good drainage to prevent waterlogging. Proper drainage encourages healthy root development, reducing the risk of root rot. This plant benefits from loam soils rich in essential nutrients. A fertile soil supports vigorous growth and splendid flowering by providing the necessary nutrients. While Spermacoce glabra prefers well-draining soil, consistent moisture levels are crucial. Ensuring soil doesn't dry out completely helps maintain plant vitality and prevents wilting.

How to Fertilize Smooth false buttonweed?

Fertilizer type: Balanced

For Spermacoce glabra, applying fertilizer should be done cautiously: use 1 teaspoon per gallon of water for liquid fertilizers and a handful of slow-release granules per plant. This ensures the plant gets nutrients without being overwhelmed.

How to Prune Smooth false buttonweed?

Pruning Time: Spring, Summer, Autumn

Begin by identifying any dead or weak stems that need removal. Using sharp, clean pruning shears, make cuts at a slight angle just above a leaf node to encourage new growth. Avoid cutting more than one-third of the plant at a time to prevent stress. To maintain a bushy and attractive shape, trim back any overly long branches that disrupt the plant's overall symmetry. Regularly check for stray shoots that could lead to an unbalanced appearance and trim them accordingly. More About Pruning Techniques→

How to Propagate Smooth false buttonweed plant?

Propagate Time: Spring, Early spring

Before planting, ensure that the seeds are clean and free from any disease or parasites. Soaking seeds in water overnight can help to promote germination by softening the seed coat.

Sow the seeds in a seed tray filled with sterile potting mix. Place the seeds on the surface and cover lightly with a thin layer of soil. Water gently to moisten the soil without displacing the seeds.

Place the seed trays in a warm spot with indirect sunlight. Keep the soil consistently moist but not waterlogged. Check daily for signs of germination, which should occur within two to three weeks.

More About Propagating Techniques→

How to Repot Smooth false buttonweed plant?

Repotting frequency: Every 1-2 years

Repot your Spermacoce glabra when you notice root-bound symptoms, such as roots growing out of the pot's drainage holes or stunted growth. Ideally, schedule repotting in spring or early summer when the plant is in its active growth phase, facilitating faster recovery.

Select a pot that's one size larger than the current one to give roots room to grow. Ensure the pot has adequate drainage holes to prevent waterlogging, which can lead to root rot. A clay pot can help in evaporation, keeping the soil from becoming overly soggy.

Opt for well-draining sandy loam soil as it provides excellent drainage and prevents root rot. This soil type also retains enough moisture to sustain the plant between watering while allowing excess water to escape easily.