General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 8a -12.2 °C (10 °F) to -9.4 °C (15 °F)
Maximum recommended zone: Zone 11
Plant Height: 3-5 feet
Plant Spread: 3-5 feet
Flowers: Showy
Fragrant
Nocturnal
Flower Color: White
Other: Slender 4-6 inch long pinkish white tube opening to 3/4 to 1 inch wide white bloom with red throat.
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Summer
Late summer or early fall
Underground structures: Tuber
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Suitable as Annual
Wildlife Attractant: Bees
Birds
Butterflies
Hummingbirds
Resistances: Deer Resistant
Rabbit Resistant
Drought tolerant
Toxicity: Leaves are poisonous
Other: Seeds are poisonous
Propagation: Seeds: Needs specific temperature: 68ºF-70ºF
Days to germinate: 5-30 days
Depth to plant seed: Sow at depth of approximately 1/4 to 1/2 inch.
Sow in situ
Start indoors
Other info: Direct sow after last frost.
Containers: Needs excellent drainage in pots

Image
Common names
  • Sweet Four o'Clock
  • Angel's Trumpets
  • Wild Four o'Clock
  • Long-Flowered Four-o'Clock
Botanical names
  • Accepted: Mirabilis longiflora
  • Synonym: Mirabilis longiflora var. longiflora

Photo Gallery
Location: Clinton, Michigan 49236
Date: 2018-08-19
"Mirabilis longiflora, 2018 photo, SWEET FOUR-O’CLOCK, , USDA H
Location: Clinton, Michigan 49236
Date: 2018-08-19
"Mirabilis longiflora, 2018 photo, SWEET FOUR-O’CLOCK, , USDA H

Date: 2010-08-11
Location: Clinton, Michigan 49236
Date: 2018-08-19
"Mirabilis longiflora, 2018 photo, SWEET FOUR-O’CLOCK, , USDA H
Location: Arenas Valley, NM, my yard
Date: 2016-06-15
Location: West Valley City, UT
Location: West Valley City, UT
Location: Arenas Valley, NM, my yard
Date: 2016-06-15
Location: West Valley City, UT
Location: Pennsylvania
Date: 2020-09-15
Mirabilis longiflora

Photo by Kurt Stuber

Photo by Kurt Stuber

Photo courtesy of Annie's Annuals and Perennials
Location: Cheyenne, Wyoming
Date: 2020-11-21

Photo by Kurt Stuber
Location: West Valley City, UT
Date: 2014-08-23
Location: West Valley City, UT
Location: West Valley City, UT
Date: 2014-08-07
Location: M
Date: 2012-05-06
Location: My Property Sunset Zone 23 Sub-Tropical Southern California
Date: 2012-05-06
Location: Cheyenne, Wyoming
Date: 2020-11-21
Location: Cheyenne, Wyoming
Date: 2020-04-23
Comments:
  • Posted by Zencat (West Valley City, Utah - Zone 7a) on Aug 30, 2014 10:09 AM concerning plant:
    The flowers open late evening and stay open all night, closing in the early morning. Fragrance is sweet, almost like sugar cookies.
Plant Events from our members
MrsBinWY On April 16, 2020 Seeds germinated
2; all 6 germinated
MrsBinWY On April 12, 2020 Seeds sown
3 pots with 2 seeds each (seeds from AudreyDee) - out to melon hoop during the day, back inside at night
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