Mirabilis Species, Heartleaf Four o'Clock, Nightblooming Four o'Clock, Wild Umbrellawort

Mirabilis nyctaginea

Family
Nyctaginaceae (nyk-taj-i-NAY-see-ee)
Genus
Mirabilis (mih-RAB-ih-liss)
Species
nyctaginea (nyk-ta-JEE-nee-uh)
Synonym
Allionia nyctaginea
Mirabilis collina
Oxybaphus nyctagineus
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
All parts of plant are poisonous if ingested
Bloom Color
Pink
Fuchsia (red-purple)
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Barbourville, Kentucky

Bay City, Michigan

Erie, Michigan

Minneapolis, Minnesota

Cole Camp, Missouri

Columbia, Missouri

Columbia, South Carolina

Hondo, Texas

Mcallen, Texas

San Antonio, Texas

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Featured Videos

Gardener's Notes:

1
positive
1
neutral
0
negative
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C
(Zone 5a) | June 2016 | positive

The children discovered this delightful plant this last weekend and brought some to me. I had never seen it before, but on a walk discov...Read More

T
T
Murfreesboro, TN (Zone 7a) | July 2003 | neutral

Native to North America, this hardy perennial is a pest to farmers, as it disperses viable seed each year, as well as having a hardy, per...Read More

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