Blue porterweed - Stachytarpheta jamaicensis (Care, Characteristics, Flower, Images)

Blue porterweed

Also known as: Light-blue snakeweed, Bastard vervain, Joee

Blue porterweed is native to the Caribbean and considered an invasive species in many areas outside.

Scientific classification

Species

Blue porterweed (Stachytarpheta jamaicensis)

Mints plantains olives and allies

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Weeds

Weed or not

Perennial, Annual

Lifespan

Herb

Plant Type

Spring, Summer, Fall

Bloom Time

Mid winter, Late winter

Harvest Time

60 cm to 2 m

Plant Height

1.2 m to 2.5 m

Spread

Green, Blue

Leaf Color

2.5 cm

Flower Size

Brown, Black, Purple

Fruit Color

20 - 38 ℃

Ideal Temperature

Images of Blue porterweed

Distribution of Blue porterweed

Distribution Map

Stachytarpheta jamaicensis, commonly known as blue porterweed, is a plant species distributed across major regions. It is native to Central America and the northern part of South America. The plant has been introduced to various locations in Africa, Asia, and the Pacific, adapting to a wide range of habitats. In certain areas, notably parts of East Africa, blue porterweed is sometimes thought to be invasive and may have an impact on local ecosystems. However, its overall effect is less pronounced in regions where it does not aggressively outcompete native vegetation.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Country roadsides, disturbed terrain

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

The blue, purple, or pink flowers of blue porterweed are rich in nectar and especially attractive to butterflies. Thus, it is an excellent addition to pollinator, butterfly, and wildlife gardens in suitable climates. It adds a splash of color to any landscape and is ideal to use in mid-positions in perennial beds and borders in tropical gardens and conservatories.

Symbolism

Spiritual ascension of the vital

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Weed Control

Blue porterweed is a weed in tropical America, including Florida, Alabama, and Hawaii. It also thrives in other tropical climates, such as Mexico, Central and South America, and the Caribbean. The plant is not on any state or national invasive species lists in the US, but it is reported as invasive in Tanzania and Kenya. Blue porterweed's weedy properties include taking nutrition from crops and being destructive in pastures, competing with local plants for water and nutrients. It can be controlled by any form of cultivation, such as hoeing, which cuts the taproots.

How to Control It

The best time to remove blue porterweed is during the spring and early summer, before the plant begins to flower and set seeds.

Hand Pulling: Start by watering the area to soften the ground. Then pull the blue porterweed plants firmly by the base, taking care to remove the entire plant, including its roots, to prevent it from regrowing.
Smothering: Cover the area where blue porterweed is growing with a thick layer of newspapers or cardboard, and then add a layer of mulch on top. This prevents it from receiving sunlight and thereby kills it slowly.
Solarization: Wet the soil where blue porterweed is growing and then cover it with a clear plastic sheet. Secure the plastic sheet on the edges. The heat from the sun will be trapped under the sheet and will kill the blue porterweed plants.
Vinegar Solution: Mix equal parts water and vinegar. Pour this solution directly on the blue porterweed which will cause it to wilt and die.

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Care Guide for Blue porterweed

Every week

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Blue porterweed prefers consistent moisture and high humidity, thriving with weekly watering. While adaptable to short dry spells, mulching during hot periods enhances moisture retention, supporting its lush growth in warm outdoor climates.

Propagation: Propagation of blue porterweed is best done using cuttings in Spring and Summer, with moderate difficulty. Look for new leaf growth as a success indicator. Use well-draining soil and maintain suitable humidity for optimal results.

Repotting: Repot blue porterweed every 2-3 years in spring for optimal growth. Use a container only slightly larger to prevent stunted blooms. After repotting, ensure consistent moisture and expose to full sun or partial shade. Minimal care is required—just love and attention.

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Images of Blue porterweed

Distribution of Blue porterweed

Culture

Weed Control

Care Guide for Blue porterweed

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