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Heartleaf Four OClock in the GardenTags plant encyclopedia

Mirabilis nyctaginea

 

Heartleaf Four O'Clock

Four-o'-clock is native to the central section of North America, and it occurs elsewhere as an introduced species, including parts of Europe. Its exact native range is obscure, and it is often weedy throughout its range, spreading into disturbed habitat easily.Four-o'-clock is a hairy to hairless perennial herb growing erect to over a meter in maximum height. The leaves are oppositely arranged mainly on the lower two thirds of the plant below the upper forkings of the stem. Each thin green leaf has an oval or heart-shaped blade up to 10 centimeters long. The flowers occur in leaf axils on the upper branches. A cluster of 3 to 5 flowers blooms in a bell-shaped involucre of five partly fused bracts. Each five-lobed, funnel-shaped flower is about a centimeter wide and magenta or pink to nearly white in color. The flowers open for only a few hours and drop, leaving the shaggy-haired developing fruits in the drying, papery cup of bracts. The root is a thick, fleshy taproot.Four-o'-clock is host to the larvae (caterpillars) of several micromoths: Embola ionis is a stem borer, Neoheliodines cliffordi and N. nyctaginella are leaf skeletonizers, and Aetole tripunctella is a leaf miner.

Contributed by @exultetbees

 
plant Features
  • Heartleaf Four OClock likes full sun to partial shade

    Full sun to partial shade

  • Heartleaf Four OClock likes occasional watering

    Occasional watering

  • Heartleaf Four OClock is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Heartleaf Four OClock likes moist and free draining

    Moist and free draining

 
plant information

Common name

Heartleaf Four O'Clock

Latin name

Mirabilis nyctaginea

type

Perennial Flowering plant

family

Nyctaginaceae

ph

6.5 - 7.5 Acid - Neutral

  • Light

    Heartleaf Four OClock likes full sun to partial shade

    Full sun to partial shade

  • Frost

    Heartleaf Four OClock is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Soil

    Heartleaf Four OClock likes moist and free draining

    Moist and free draining

  • Water

    Heartleaf Four OClock likes occasional watering

    Occasional watering

Plant & bloom calendar

  •  
    Best time to plant

full grown dimensions

The size of a fully grown Heartleaf Four OClock is 0.50meters x 1.00meters 0.50 M 1.00 M

Mirabilis nyctaginea

Four-o'-clock is native to the central section of North America, and it occurs elsewhere as an introduced species, including parts of Europe. Its exact native range is obscure, and it is often weedy throughout its range, spreading into disturbed habitat easily.Four-o'-clock is a hairy to hairless perennial herb growing erect to over a meter in maximum height. The leaves are oppositely arranged mainly on the lower two thirds of the plant below the upper forkings of the stem. Each thin green leaf has an oval or heart-shaped blade up to 10 centimeters long. The flowers occur in leaf axils on the upper branches. A cluster of 3 to 5 flowers blooms in a bell-shaped involucre of five partly fused bracts. Each five-lobed, funnel-shaped flower is about a centimeter wide and magenta or pink to nearly white in color. The flowers open for only a few hours and drop, leaving the shaggy-haired developing fruits in the drying, papery cup of bracts. The root is a thick, fleshy taproot.Four-o'-clock is host to the larvae (caterpillars) of several micromoths: Embola ionis is a stem borer, Neoheliodines cliffordi and N. nyctaginella are leaf skeletonizers, and Aetole tripunctella is a leaf miner.


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