Spear Leaf Swamp Mallow (Pavonia hastata) in the Shell Flowers (Pavonia) Database

Common names:
Give a thumbs up Spear Leaf Swamp Mallow
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General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 8b -9.4 °C (15 °F) to -6.7 °C (20 °F)
Maximum recommended zone: Zone 11
Leaves: Evergreen
Flowers: Showy
Flower Color: Other
Uses: Windbreak or Hedge
Cut Flower
Will Naturalize
Wildlife Attractant: Bees
Resistances: Deer Resistant
Propagation: Seeds: Sow in situ
Start indoors
Can handle transplanting
Other info: The first flowers will be cleistogamous so there will not be a bloom but will be followed by normal flowers later in the season.
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger

Also called Brazilian Rock Rose

Photo gallery:
Location: NE FloridaDate: 9/9/11Lots of small flowers
By wren
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Location: My yard, still in it's potDate: 9/9/11Love ly soft pink with darker center.
By wren
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Location: Savannah, Georgia (my garden)Date: June 2017
By greene
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Location: NE FloridaDate: 9/9/11Spear shaped leaves that give its name
By wren
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Location: Jacksonville, TXDate: 2012-07-27
By dave
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Location: my garden backDate: 2015-07-21
By piksihk
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Location: Savannah, Georgia (my garden)Date: Aug 17 2019Pavonia hastata mature seed pods and seeds
By greene
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Location: Jacksonville, TXDate: 2012-07-27
By dave
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Location: Savannah, Georgia (my garden)Date: June 2017
By greene
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Posted by SongofJoy (Clarksville, TN - Zone 6b) on Mar 19, 2012 4:52 AM

According to the Australian Hibiscus Society, this is one of the few Pavonias that has been used as an ornamental. It is a small perennial shrub that grows to around 3 feet tall. During its flowering season which is from the end of spring through summer and autumn in subtropical areas, this plant bears many white or pinkish hibiscus-like flowers with a dark crimson spot in the center. The flowers are approximately 2 inches wide and last one day but are quickly replaced by others so that this plant usually has many flowers at the same time. The white-flowered form has dark green leaves.

In early spring the plant will form buds that usually will not open. Seed setting will follow. This is a phenomenon known as "cleistogamy" and most likely is an adaptation to unfavorable environmental conditions. Buds become blooms in early summer.

When given good soil and ample water, Pavonia hastata has the potential to become a weed.

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Plant Events from our members
greene On June 9, 2017 Bloomed
Also, the plant self-seeded and I now have one new plant.
greene On June 19, 2014 Bloomed
piksihk On September 21, 2017 Bloomed
Backyard WG
piksihk On December 17, 2016 Bloomed
still loaded with blooms; these self-sowed
piksihk On October 19, 2016 Bloomed
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Floral Alphabet Soup! Ingredients with the Letter B as a genus or common lead! by KatEnns Dec 15, 2017 10:45 AM 61
Left overs free to good home by poisondartfrog Feb 20, 2016 3:23 PM 8
Hibiscus phoeniceus/Pavonia hastata by Horntoad Oct 27, 2015 11:45 AM 9
Perennial hibiscus by ltre Mar 24, 2015 8:21 PM 30
Pavonia - Hibiscus Cousin by Xeramtheum Jun 30, 2014 9:03 AM 13
Swamp Mallow?? by wren Jun 5, 2012 9:12 AM 2
Winners and Losers by Bubbles Aug 14, 2010 11:32 AM 51

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