Many people think that growing houseplants, especially African violets, can be challenging. However, these plants are simple to maintain if you use the right soil and choose the proper location. This article will provide tips on the most suitable growing medium for African violets.
Since these plants require proper watering, you’ll want to use the right growing medium. You can mix your own or choose from several brands available online or at your local garden center. Providing the right African violet potting soil sets you up for success from day one.
Why the Right Potting Mix Matters
The soil in which your plant grows contains its entire universe: nutrients, moisture, and space for its roots to anchor and grow. The right potting mix for African violets allows air to reach the roots. In their native environment of the “Tanga region of Tanzania in Africa,” these plants grow in crevices of mossy rocks. This allows a good amount of air to reach the roots. African violet soil should allow water to move through while having the proper amount of water retention without cutting off airflow. Some additives help roots to grow bigger and stronger. Your mix should be well-draining, porous, and fertile.
Conventional potting mix is too dense for the sensitive African violet. These jungle plants evolved in mossy outcrops with very little soil. Typical houseplant soil is too heavy and restricts airflow because the decomposed peat it contains encourages too much water retention. This type of soil can cause the death of your plant. However, when it is mixed with equal parts of coarse vermiculite and perlite, you have an appropriate mix for African violets. Pumice is an alternative ingredient, often used for succulents and other fast-draining planting mixes.
Key Ingredients for African Violet Potting Mix
While you’ll find dozens of African violet soil recipes online, nearly all contain three key ingredients: perlite, vermiculite, and peat moss.
Read also: African Violet Soil Guide
- Perlite: This hyper-lightweight material is derived from volcanically heated glass. Heating glass in this manner creates a popcorn-like material that retains moisture without impeding drainage. This keeps your plant hydrated without waterlogging it underground.
- Vermiculite: This flaky mineral is often sold in pellet form. It is nontoxic and doesn’t rot or mold, preventing irritating pests from finding safe harbor in your plant’s container. Vermiculite also helps keep potting mix sterile, which keeps your African violet’s blooms fresher longer.
- Peat Moss: This is harvested from decaying plant matter in mossy peat bogs. It helps boost acidity in the soil and maintains soil structure over time. Like perlite and vermiculite, it can hold several times its weight in moisture, slowly releasing it to the plant.
Mixes you buy contain sphagnum peat moss (not decomposed), coarse sand, and/or horticultural vermiculite and perlite. If you wish to make your own potting mix, choose from these ingredients. If you already have a houseplant mix that you want to include, add 1/3 coarse sand to bring it to the porosity you need. As you can see, there is no “soil” used in the mixes. In fact, many houseplant potting mixes contain no soil at all.
You may want some fertilizer included in the mix to help feed your plants. A premium African Violet mix contains additional ingredients such earthworm castings, compost, or composted/aged bark. The castings and the compost act as nutrients for the plants, as does decomposing bark. You will likely want to use additional feedings for the optimum health of your African violet plant.
Whether making your own mix or purchasing one that is ready-made, moisten it slightly before planting your African violets. Lightly water in and locate the plants in an east-facing window. African violets have a reputation for being a little finicky. But contrary to popular belief, they’re actually quite hardy!
Alternatives to Peat Moss
Peat moss is one of the most common ingredients in potting soil of all types. Unfortunately, it’s not the greatest for the planet. Peat is slow-growing, and harvesting peat moss depletes centuries-old bogs much faster than they can be replenished. Consider these alternatives:
- Coconut Coir: Widely considered the best peat moss alternative, coco coir is made from dried-out fibers harvested from coconut husks.
- Wood Fiber: Bark chips and wood shavings provide the same air and water flow benefits as peat moss, with less detriment to the environment.
DIY African Violet Potting Soil Recipe
Another factor that sets African violet soil apart is the level of acidity you’ll need to provide. Conventional potting soil is usually quite close to neutral (7.0) acidity, or pH. African violets prefer slightly acidic conditions, between 5.8 to 6.5 pH. Generally, peat moss is used to lower the pH in African violet potting soil. Coco coir has also shown to provide sufficient pH when used with traditional fertilizer.
Read also: Potting Mix for Healthy African Violets
Here's a no-fail recipe: one part peat moss, one part perlite, and one part vermiculite.
Most garden centers sell specialty African violet potting mix, but some gardeners prefer to mix their own. Consider adding these amendments:
- Limestone: To help balance acidity (only add if using peat moss) and prevent toxicities in the soil.
- Superphosphate: Encourages strong root growth, great for newly propagated African violets.
Making DIY African violet potting soil isn’t as simple as mixing the ingredients above in a pot. First, you’ll need to pasteurize them to eliminate any bacteria, plant diseases, insects, or weed seeds hiding in your ingredients.
Heat your oven to 180º Fahrenheit (82º Celcius). Moisten your soil mixture and spread evenly over a large roasting tray or lipped cookie sheet.
Choosing a Commercial Mix
Even if you’re not interested in making your own mix, you can still enjoy your African violet’s year-round blooms! African violets are one of the most popular houseplants in the world, so many retailers sell mix made specially to provide their preferred conditions.
Read also: Experience Fad's Fine African Cuisine
Grabbing a bag of commercial potting soil is like picking the express lane-it's quick and easy. Miracle Gro African Violet Potting Mix is a popular pit stop, but it's got the heft of a sumo wrestler. Lighten it up with peat moss and a dash of vermiculite or perlite to avoid suffocating those delicate roots.
Many popular horticultural supply companies offer bags of potting mix especially for African violets. They usually come in 8-quart sizes, so it is ideal for the hobbyist with a small collection. Some of these mixes contain fertilizer, so if you choose to use them, be sure to cut back on your own fertilizer for the first few months after you repot. These blends are sold to be used straight out of the bag, but they generally are heavier mixes with very little perlite.
I have had success mixing these blends evenly (50/50) with coarse perlite or a 40% mix to 60% coarse perlite. The percentage of perlite can vary because of factors like coarseness or individual growing conditions. Even variations in the base mix can affect the water-holding capacity of the final product.
Repotting Your African Violets
Once you’ve mastered African violet potting mix, you may want to repot your current plants to introduce fresh, nutrient-rich soil. It’s an easy process, but you’ll want to keep a few things in mind. Always try to repot your plant while it’s healthy and when the soil has had time to dry up a bit. And stay mindful of the delicate root system.
Select a pot that's cozy-African Violets bloom best when slightly root-bound. Typically, repotting every 6 months keeps them happy. Keep an eye out for compacted soil, leaves throwing shade (yellow or brown), a long neck, or the dreaded signs of disease. Caught your Violet in full show? Repotting can wait-unless it can't.
In the right potting mix, African violets will grow quickly and vigorously. In fact, you may even want to divide up a large individual to propagate more! African violets often grow sucker offshoots with their own root systems, which are easy to separate from the mother plants and rehome.
Watering and Fertilizing
To keep African Violets blooming, soil health is non-negotiable. Overwatering is the fast track to root rot, while underwatering leads to drought stress. Balance is key. Use room temperature water and ensure the soil is moist but not soggy.
African Violets crave phosphorus for blooming. Use a fertilizer with a higher phosphorus ratio, like 10-30-20, and apply at half-strength to prevent nutrient burn. Organic matter is your friend. Add compost or peat moss to improve nutrient content and aeration. Regularly check for signs of distress. If leaves are wilting or blooms are sparse, reassess your care routine.
Troubleshooting Common Issues
Even with proper soil components and mixing, you may encounter some problems with your African violets. With some adjustments to soil, moisture, and humidity, you can get struggling African violets thriving again. Pay close attention to their needs, and don't hesitate to repot in fresh mix if plants seem unhappy.
Frequently Asked Questions
Can I use Miracle-Gro potting mix for African violets?
Yes. Miracle-Gro Indoor Potting Mix works well as a base for African violets. For better airflow and drainage, add a handful of perlite before planting.
Can I use cactus soil for African violets?
Cactus soil drains very quickly, so it can dry the roots out too fast. If you use it, mix in some coco coir or indoor potting soil to help the mix hold moisture.
Can I use orchid potting mix for African violets?
Orchid mix is too chunky to use alone. You can blend a small amount into your soil to improve airflow, but it needs a finer base like peat moss or coco coir to support healthy root contact.
What is the secret to growing African violets?
The biggest key is keeping the soil lightly moist and well-aerated. When roots get the right balance of oxygen and moisture in a slightly acidic mix, plants grow better and bloom more often.
Can I use garden soil or compost in my African violet potting mix?
Garden soil is too heavy and can cause root rot indoors. Compost can be used in small amounts, but keep it under 20 percent of your mix so salts do not build up.
Quick Tips for Success
- African violets should not be kept under direct sunlight.
- African violets should not be heavily watered after repotting, as they have a small root system.
- Yes, African violets can be fertilized.
There’s no shortage of ways to master the mix you need to grow a vibrant, thriving African violet.
The right soil makes a big difference in how African violets grow and bloom. A light, airy mix with good drainage supports healthy roots and steady flowers.
Whether you’re just starting out or are a seasoned grower, African Violet Resource Center has everything you need to help your plant grow vibrant and strong.
