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Kiersten lives in New Orleans, LA and graduated with her masters degree in Ecology and Evolutionary Biology from Tulane University in 2019.
She has conducted or assisted on research studies covering trees such as the bald cypress, swamp maple, and water tupelo, as well as important marsh grasses including Juncus, Spartina, and Phragmites.
Kiersten is a certified Louisiana Master Naturalist and regularly volunteers with local community gardens and nonprofits to help restore critical ecosystems along the Gulf Coast.

4.7 out of 5 (61 experiences)


About African Milk Bush
This plant grows tiny leaves that drop off once they mature. Plants in the Euphorbia genus have poisonous, milky, white, latex-like sap so be sure to keep them far from curious pets and children ⚠️ You may hear them referred to as cacti, but they're actually completely unrelated and belong to a group of plants known as spurges!
Taxonomy
Euphorbia trigona
Euphorbia
Euphorbiaceae
Malpighiales
Also known as
African Milk Tree and 'rubra'

How to care for African Milk Bush

How often to water your African Milk Bush

every 12
African Milk Bush needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot located in Madison, Wisconsin.
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
12

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.
Madison, Wisconsin
25% Very Low

Growing African Milk Bush in Madison right now
Plant growth potential is currently low 📉
February 3rd, 2023
Sunlight intensity as measured by “net radiation” in Madison is currently low 📉.
The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in determini…
Sunlight will increase by 47.7% ☀️
February 2nd, 2023
Madison is trending towards greater sunlight intensity!
The amount of sunlight in Madison is expected to increase by 47.7% over the next 2 weeks to an average of 8.0 megajoules of energy per m2 pe…
Daylight will increase by 1.3 hours 📈
February 1st, 2023
This month, Madison is getting an average of 5.5 hours of clear sky sunlight per day.
Hours of daylight will increase by 13.8% over the next two weeks. Your plants will get 10.3 total hours of day…
Finding light for African Milk Bush in your home

a window
African Milk Bush love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Madison, Wisconsin ⛅.
African Milk Bush does not tolerate low-light 🚫.

How to fertilize African Milk Bush

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 African Milk Bush after it doubles in size or once a year—whichever comes first.
When to repot African Milk Bush
Is this a good time of year to repot? No ⏳
February 2nd, 2023
The growing potential in Madison is low 📉.
Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.
It's best to repot…

African Milk Bush is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!
Water Needs
African Milk Bush thrives in dry soil and should be watered sparingly. 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
African Milk Bush 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
African Milk Bush is not safe to consume. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian. If you have children, cats, or dogs in the home, we suggest keeping this plant out of reach.
Humidity
African Milk Bush prefers dry environments. Providing extra humidity or misting your plant allows water to linger on leaves, which can create the perfect environment for harmful types of fungi.
Soil
African Milk Bush is very sensitive to wet soil, so choose a potting soil that drains very well and doesn’t retain too much moisture. A good soil will have lots of perlite or vermiculite for drainage and some organic matter for nutrition. A few handfuls of perlite added to regular store-bought cactus soil will do the trick!
Fertilizer
African Milk Bush grows very slowly and doesn’t require added fertilizer. Replacing your plant’s potting soil once a year should provide them with more than enough nutrition. Remember, plants get their energy from sunlight, not fertilizer!
Dormancy
It’s common for African Milk Bush to go dormant in the wintertime and you may notice their growth slow down. Waterings should be spaced out more during this time.
Native Region
African Milk Bush is native to Worldwide.
Flowers
African Milk Bush produces flowers in the wild, but does not flower when kept as houseplants.
Growth Pattern
African Milk Bush grows vertically and new growth will emerge from the top of the plant.
Growing Outdoors
USDA Hardiness Zone
African Milk Bush can be grown outdoors in USDA Hardiness Zones 10-12b. Find your local hardiness zone here.
Propagation
African Milk Bush can be propagated by the stem method. To propagate:
- Make a cut just above the node. The node is the break in the stem where the leaf emerges.
- To get the cutting to root, you can either:
- Place the cutting in water until roots emerge and are ~2” long and then transplant into well-draining soil, or
- Place the cutting directly into well-draining soil and water when dry.
Common Issues
Overwatering is a likely cause of issues with African Milk Bush. These plants are very sensitive to wet soil so if you notice your plant becoming squishy or translucent, overwatering is the likely culprit.
Cut your plant just past where the rot ends and allow it to callus over for a few days before replanting it in fresh, dry soil. Download Greg to make sure your plant never gets overwatered again!
Care Summary for African Milk Bush
African Milk Bush
Greg recommends:

0.5 cups every 12 days

< 1ft from a window

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

What other plant parents say











Beautiful plant that grows fast and easy to take care of with little maintenance. Perfect for an outdoor patio/balcony area with just enough sun to soak in. Mine has grown these amazing red leaves that have surprisingly stayed on throughout the colder months.
I would be a little cautious when handling it because aside from the pointy thorns on it, pricking yourself or getting it’s sap on you can cause annoying itchiness and discomfort. Please make sure to keep this away from pets or small children. If you practice care with this plant, it will certainly reward you with lots of growth and love.









I have had this old man ever since he was an inch tall he has grown to be almost 3 feet I’ve had him for many years. This guy is a great cactus and I love him to pieces. Easy to grow I put him outside in the summer make sure he’s got some shade on him because the sun is too hot here. I recommend one to y’a.






These cacti are great! They don’t need watering too frequently and are very tough plants. I will say that from experience these plants grow better in a relatively dry, room temperature place, and only need watering about once every 2-3 weeks depending on the temperature. These plants can grow very tall too, and they’re beautiful! Would definitely recommend for someone who’s new with plants!



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Greg’s plant care information is derived from first-principles biology and physics and supported by peer-reviewed research, academic institutions, and industry experts. We are committed to providing the highest-quality plant care information available, so if you have any concerns about our content, feel free to reach out to support@greg.app.
- Plants for a Future. “Plant Database.” pfaf.org. N.p., n.d. Web.
- Encyclopedia of Life. “Encyclopedia of Life.” eol.org. N.p., n.d. Web.