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Also known as
Flower of an Hour, Flower of an Hour, Flower-of-an-hour, Bladder hibiscus, Bladder ketmia, Bladder weed, Flower-of-the-hour, Modesty, Puarangi, Shoofly and Venice mallow
Taxonomy
Hibiscus trionum
Hibiscus
Malvaceae
Malvales

How to care for Bladder Weed

How often to water your Bladder Weed

every 9
Bladder Weed needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
9

Check the growing potential in your area
A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Flower of an Hour in your home

a window
Bladder Weed love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Bladder Weed does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Bladder Weed in your home 🏡.

How to fertilize Bladder Weed

Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Bladder Weed after it doubles in size or once a year—whichever comes first.

Bladder Weed is generally considered an easy-to-care-for plant and makes a great choice for beginners!
Water Needs
Bladder Weed prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Bladder Weed requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.
Toxicity
Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.
Humidity
Bladder Weed doesn’t require additional humidity. Plants absorb most water through their root system rather than their leaves, so the best way to provide humidity for your plants is through watering the soil.
Soil
Bladder Weed does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!
Fertilizer
Bladder Weed should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
Native Region
Bladder Weed is native to Worldwide.
Growing Outdoors
USDA Hardiness Zone
Bladder Weed can be grown outdoors in USDA Hardiness Zones 2a-11b. Find your local hardiness zone here.
Care Summary for Bladder Weed
Bladder Weed
Greg recommends:

0.5 cups every 9 days

< 1ft from a window

Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.
