10 Common Houseplants That Love Acidic Soil

As a plant owner, knowing the proper soil pH should be among the things of your concern. After all, you wouldn’t expect alkaline soil to provide the same amount of nutrients to houseplants as acidic soil.

Soil pH measures an earth’s acidity, which determines the nourishment that a plant may naturally get from its preferred soil. While most plants favor a neutral pH, plants like azaleas, camellias, and some fruit trees opt for a more acidic soil to help them thrive.

In this article, we will explore some of the houseplants that love acidic soil. We’ll also show you their preferred pH ranges and how to take care of them.

What Is Acidic Soil?

Neutral soil has a pH value ranging from 6.5 to 7.0. Any number higher than 7.0 indicates the alkalinity of the soil, and any value under 6.5 means that the soil is acidic.

Some plants don’t thrive in highly acidic soil since it can restrict growth. However, this doesn’t necessarily mean that you’ll have to quickly incorporate lime into your soil to increase the pH level.

Acidic soil doesn’t always equal poor quality. In fact, it has the advantage of quickly dissolving minerals and nutrients more than neutral and alkaline soils do.

It’s mainly a matter of different plants having different soil requirements.

Houseplants That Like Acidic Soil

Since some acid-loving plants are considered houseplants, here are 10 of the best plants you can grow when you have acidic soil sitting in your pots:

1.   Azalea

Azalea flowers

Azaleas are a lovely addition to your indoor plant collection. They are flowering shrubs with various colors, blooming only in late spring or early summer. These seasons make their sweet fragrance even more rousing.

Fortunately, they’re pretty easy to grow. They can thrive even in dim light, making them perfect for an indoor setting.

This is as long as you keep the soil as acidic and well-drained as possible. The best pH value for Azaleas should range from 4.5 to 6.0.

2.   African Violets

African Violets are famous for being aesthetically pleasing as an interior decoration. They also opt to thrive under low or artificial light, favoring an indoor setting rather than an outdoor one.

Unlike Azaleas, however, they’re more challenging to grow.

African Violets mostly grow best in an evening temperature and require a pH value between 5.8 and 6.2. Ensure the soil acidity stays at these ranges and doesn’t go below 5.8.

This plant may be an acid-lover, but not to the extreme that it’ll be too much for the plant.

Read more: 11 Amazing House Plants That Don’t Need Soil

3.   Boston Fern

Boston Ferns can add class to your house. They are flowering ferns that prefer a lower pH level ranging from 5.0 to 5.5.

They’re pretty high-maintenance, so you’ll need to always tend to them. Aside from keeping their soil as acidic as possible, they also prefer organically rich and slightly moist soil.

It’s also vital for the Boston Ferns to have good drainage so the soil wouldn’t become soggy, which may lead to the plant’s death.

4.   Cactus

While you can usually connect cacti to hot deserts, indoor cactus plants add a unique statement when placed on your windowsill. They are usually low-maintenance plants that don’t often need arrangements for watering.

Since this is the case, they already naturally thrive in an environment with acidic soil ranging from 5.0 to 6.5.

5.   Snake Plant

Snakeplant

Snake plants are well-known for their distinct leaves and low maintenance needs. Sometimes, They’re deemed unkillable by gardeners and plant owners alike. This is because they can tolerate both shade and direct exposure to sunlight, underwatering, and dry air for months.

However, they will eventually still need some proper care. In regards to their soil, snake plants thrive in soil pH values of 5.5 to 7.0, which means that they can live in slightly acidic to neutral soil environments.

6.   Hydrangea

Though commonly planted outdoors, hydrangeas as a houseplant can improve indoor air while the flowers look beautiful in all their colors.

However, this is another one of the high-maintenance plants because you have to make sure that it’s receiving enough sunlight while not exposing it directly. Hydrangeas hate the heat and love water, so you also need to provide the right temperature for them while inside the house.

The best thing about hydrangeas is that they can be planted in different kinds of soil, from acidic to alkaline. Nonetheless, they have the ability to change colors when cultivated in acidic soil, which makes them even more fun to have

If you want to keep your hydrangeas moist while maintaining an acidic environment, you can mix water and vinegar and spray them on the soil on your following watering schedule.

7.   Daffodil

Daffodils are bright yellow flowers that often bloom in early spring. You can put them in a vase, and they will share an inspiring fragrance around the room or office.

While frequently seen in gardens, you can also grow Daffodils indoors by planting the bulb in the soil. The soil needed to be neutral to slightly acidic with a pH of 6.0 to 7.0. Aside from that, the soil for the daffodil bulb should also be loose, fertile, and well-draining.

Related: House Plants That Don’t Attract Bugs

8.   Gardenia

Gardenias are one of the houseplants that can bring a zesty aroma to your home. They’re also popular plants that you can place in the bathroom since they like high levels of humidity. You can also place them near the window because they adore sunlight.

However, they’re pretty tricky to grow because of their sensitivity to low temperatures. In regards to soil, Gardenia loves acidic soil, usually staying in pH ranges of 5.0 to 6.0.

9.   Magnolia

With its dark green leaves, circle-going white flowers, and sweet aroma, Magnolia is a great houseplant to put in the corner of the living room.

However, growing magnolia usually takes time before it can fully bloom. A magnolia plant prefers rich, clay soil with a pH of 5.0 to 6.0. It also adores both partial shade and direct sunlight so that it can continue to grow beautifully.

10. Blueberry

Blueberry

Blueberry is a fruit plant that’s also possible to grow indoors. As a flowering fruit plant that blooms beautifully in springtime, blueberry plants prefer to receive nutrients from the soil in acidic conditions.

A pH range of 5.0 to 6.0 is one of the requirements to accomplish the challenge of growing Blueberries indoors. Blueberry shrubs also shouldn’t be deprived of direct sunlight and should be placed near the windows on schedule so that they can get a fair share of it.

Measuring Soil pH for Houseplants That Like Acidic Soil

Having the right amount of acid in your soil is a helpful way to ensure that your plants will grow and blossom. So how do you measure the soil pH for your acid-loving houseplants?

The first one is with a pH meter. This is a gauge that you can stick on the ground to measure the soil’s alkalinity-acidity activity.

Another way for you to measure your potting soil is with pH testing kits. These kits contain white pH strips you’ll use on a soil sample to evaluate the acidity and nutrients a plant may receive.

Wrapping Up

Planting in an acidic soil condition can be challenging.

However, provided with the right houseplant and the correct care procedures, you’ll be able to grow a collection of beautifully-blooming plants in your house.