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Dark blue snakeweed, Blue Porterweed in the GardenTags plant encyclopedia

Stachytarpheta cayennensis

 

Dark blue snakeweed, Blue Porterweed

Stachytarpheta cayennensis is a perennial shrub which grows to over 2m tall. It produces a spike to 45cm covered in bracts with deep purple-blue to lavender flowers with pale centers which only last a single day before wilting. It is often seen as a weed but is frequently cultivated as a garden ornamental.

 
plant Features
  • Dark blue snakeweed, Blue Porterweed likes full sun to partial shade

    Full sun to partial shade

  • Dark blue snakeweed, Blue Porterweed likes very little water

    Very little water

  • Dark blue snakeweed, Blue Porterweed is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Dark blue snakeweed, Blue Porterweed likes free draining

    Free draining

 
plant information

Common name

Dark blue snakeweed, Blue Porterweed

Latin name

Stachytarpheta cayennensis

type

Perennial

family

Verbenaceae

ph

6.0 - 7.5 Acid - Neutral

  • Light

    Dark blue snakeweed, Blue Porterweed likes full sun to partial shade

    Full sun to partial shade

  • Frost

    Dark blue snakeweed, Blue Porterweed is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Soil

    Dark blue snakeweed, Blue Porterweed likes free draining

    Free draining

  • Water

    Dark blue snakeweed, Blue Porterweed likes very little water

    Very little water

Plant & bloom calendar

  •  
    Best time to plant

full grown dimensions

The size of a fully grown Dark blue snakeweed, Blue Porterweed is 1.00meters x 2.00meters 1.00 M 2.00 M

Stachytarpheta cayennensis

Stachytarpheta cayennensis is a perennial shrub which grows to over 2m tall. It produces a spike to 45cm covered in bracts with deep purple-blue to lavender flowers with pale centers which only last a single day before wilting. It is often seen as a weed but is frequently cultivated as a garden ornamental.


Planting

From Early Spring TO Early Spring

Plant in Spring in any soil type, preferably well drained and in full sun to partial shade. Sow seeds in Spring straight onto the growing site.

 
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Gardeners who are growing this plant