Due to its improved drainage, cactus soil, or cactus mix as it is sometimes known, is a mixture of primarily inorganic materials including sand, gravel, pumice, and/or perlite that is perfect for growing cacti and succulents.
Can I grow cacti in normal potting soil?
Yes, you can give your cactus plants either standard potting soil or African violet dirt. However, once more, avoid using these on their own as they contain an excessive amount of organic matter that retains moisture and can contain fertiliser additives that are not designed for slow-growing cacti. Instead, incorporate them as one component of your homemade cactus potting soil.
How is cactus soil combination made?
Making Your Own Cactus Soil Mix
- 3 components of potting soil
- coarse sand in 3 sections.
- 1 part pumice or perlite
- Pine bark, one part (optional)
How do you produce potting soil for succulents and cacti?
My recipe for succulent potting soil is as follows:
- coarse sand in two pieces (turface or poultry grit)
- Perlite, one part (or pumice)
Which potting soil is ideal for cacti?
Cactus soil is a potting mix that combines organic and inorganic components to provide a quick-draining, low-fertility environment. Perlite, gravel, grit, or broken granite are the main components of the ideal soil mixture for cacti since they help aerate the soil. Cactus plants grown indoors require a different potting soil mixture than those used for typical houseplants because they require a soil that drains quickly. Making your own cactus soil is simple, and it is less expensive than purchasing commercial cactus potting soil.
Similar to succulent potting soil mix, the recommended potting medium for cactus plants comprises more inorganic content. Water can drain quickly without becoming overly wet in a cactus potting mix that is primarily gravel (or grit) and contains some organic matter. Cacti require little moisture to survive in the outdoors, thus their potting soil should dry out rapidly.
Cactus plants can grow in an aerated, porous potting mix because it has excellent drainage. Growing cacti indoors or outdoors won’t provide many maintenance challenges as long as the soil mix is suitable for cacti and drains effectively.
When grown indoors, cactus plants don’t require a lot of nutrients. Therefore, rich organic elements like peat moss, compost, or wood chips are not necessary for cactus potting soil. These components can also cause root rot in your fleshy cactus plant and tend to hold too much moisture for cacti.
Is dirt for cacti and succulents the same thing?
There is nothing more frustrating than planting a cactus only to discover that the soil you are using to grow it is inappropriate. Understanding the distinction between cactus soil and succulent soil before you buy will help you prevent mistakes that could take your cactus years to recover from.
What distinguishes succulent soil from cactus soil? Cacti plants may survive in arid conditions, but other succulent plants need constant watering to be alive. Cacti require a coarse, porous soil with minimal organic matter, whereas succulents require a well-draining potting mixture with a lot of organic material, such as peat moss or composted manure.
The contrasts between cactus soil and succulent soil are covered in this blog post, along with what each type of soil requires in terms of nutrients and environmental conditions. So let’s get going.
What distinguishes succulent soil from potting soil?
Succulents need well-draining soil to be healthy. A succulent stores moisture in its leaves instead than the traditional potting soil, which is designed to hold water. In actuality, the cactus or succulent will develop root rot if the soil is excessively wet. So even though I’ve said it before, it bears reiterating that drainage holes must be safeguarded from clogging in succulent plant containers with holes in the bottom (see the full post on how to pot succulents here for more details). Of course, the following step is to select the kind of soil that will allow the water to drain.
I’ve bought and used this palm and cactus mix, which is also priced a little higher on Amazon, and it does appear to work well for succulents—but 8 qts can go rather quickly! I’ve started making my own succulent potting mix as a consequence using just three basic materials (get the printable version at the bottom of the post). What you’ll need to prepare the ideal soil for succulents in pots is listed below:
What cactus mixture works best?
Cacti’s Favorite Soil
- Succulent and cactus grit mix made by Bonsai Jack. Our prefered choice is Bonsai Jack.
- Premium Organic Cacti and Succulent Soil with Nutrients from Fat Plants in San Diego.
- Cactus and succulent mix for the garden.
- The All Natural Succulent and Cactus Mix from Perfect Plants
- Organic Cactus & Succulent Mix by Hoffman.
Should I amend the cactus soil with perlite?
There are a tonne of recipes online. Most people start with either standard potting soil or the soil mix sold in bags for succulent plants. If you decide to create your own blend, use ordinary potting soil free of additives. We’ll go over additional components to include when amending or creating your own succulent potting soil.
Succulent growth medium frequently gets the following additions:
Fine Sand
Improved soil drainage results from using coarse sand in amounts of 50 to 30 percent. Avoid using materials with fine textures, such as play sand. A higher sand content may be advantageous for cacti, but it must be coarse sand.
PerlitePerlite is frequently used in succulent-growing mixtures. This product improves drainage and promotes aeration, although it is light and frequently floats to the top when watered. Use between 1/3 and 50% when mixing with potting soil.
Turface
Turface is a calcine clay product and soil conditioner that delivers aeration, oxygen, and moisture monitoring to the soil. It has the consistency of pebbles and does not compact. Although it goes by the brand name Turface, the phrase “product” is also frequently used to describe it. used as a top dressing as well as an ingredient in succulent soil mixes.
PumicePumice is a volcanic substance that may store nutrients and moisture. Some people utilise significant amounts of pumice. Some growers report successful trials when using only pumice. But using this kind of material necessitates more regular watering. Depending on where you live, you might need to order this item.
Coconut CoirUnlike other goods that might not absorb water well after the initial soaking, coconut coir, which is made from the shredded husks of the coconut, offers drainage qualities and can be repeatedly wet. Coir, which is pronounced “core,” was never brought up before to the typical succulent grower. Coir is a component of at least one well-known distributor of succulents’ peculiar mix. I have healthy plants in my nursery and use a mixture of 1/3 normal potting soil (the inexpensive variety), 1/3 coarse sand, and 1/3 coir.
Which soil combination is ideal for succulents?
You’ll need containers that can accommodate the quantity of succulent soil you intend to mix and have room for it to be tossed around a bit.
- The potting mix for succulents works well in a sizable tote with a top.
- Use your hands, a trowel, and a garden fork to mash up the soil.
- Long rubber gloves are usually what you should wear to prevent skin irritability and dryness.
Mix It Up!
half a pot of soil
The opposite half:
- 1/3 fine sand
- 1/3 pumice or perlite
The remainder should consist of roughly two thirds coarse sand, one third perlite or pumice, and one third poultry grit or turface.
What serves as perlite’s replacement?
Different perlite substitutes will function better or worse depending on the plants you are growing and the circumstances in which they are growing.
Below, we’ll examine the ten most popular alternatives to perlite.
- rice stalks
- Pumice
- Agricultural tenacity
- granular granite
- Vermiculite
- charred clay
- Bark
- Peat
- Coir
- Sand
Rice husks
PBH rice hulls or parboiled rice husks are excellent substitutes for perlite in soil mixtures. If you’re searching for an organic, greener option, they’re also perfect. When they are parboiled, any weed seeds, mould, or other diseases are removed, effectively sterilising and killing the rice seed at the same time.
Lightweight rice husks (also known as hulls) aid in soil aeration, drainage, and compaction prevention. Because they are organic, rice hulls are a fantastic source of nutrients for plants and are safe to add to soil for both indoor and outdoor gardening.
The main drawback is that they tend to float to the top of the soil when watered because they are lighter than perlite.
Pumice
Given that both pumice and perlite are porous rocks created by volcanic eruptions, they are quite similar to one another. When comparing “perlite vs. pumice,” many gardeners can become extremely enthusiastic, but the truth is that pumice has a number of advantages over perlite.
It doesn’t float during watering or blow away in the wind because it is heavier, on the other hand. In addition, pumice, unlike perlite, creates less dust, especially the coarser kinds, and contains more nutrients and minerals. Additionally, it does a superb job of maintaining the soil’s airiness, pliability, and drainage. Pumice is by far your finest option if you’re cultivating succulents.
Pumice, on the other hand, is more expensive and can be challenging to locate at most plant nurseries or garden centres.
Horticultural grit
A typical size range for the little stone fragments that make up horticultural grit is 2 to 4 mm. It works similarly to perlite by forming air pockets inside the soil, which gives the roots oxygen while preventing root rot because of better drainage. Grit creates less dust and may be used for both indoor and outdoor plants because it doesn’t contain any lime.
Additionally, it is heavier than perlite, which makes it an ideal ornamental layer for potted plants, particularly if you need to ward off fungus gnats. Succulents, outdoor alpine plants, and lavender respond best to horticultural grit.
Horticultural grit is heavier than perlite, which is a drawback. However, you can make use of this by incorporating it into the soil mixture to balance top-heavy potted plants.
Granite gravel
Perlite and granite gravel have a similar appearance and serve comparable functions in soil mixtures. Both are porous rocks, which are excellent at retaining moisture. They also maintain the soil aerated, well-drained, and free of compaction. Gravel is heavier than perlite, and unlike perlite, even little bits, like pea gravel, won’t wash away during irrigation.
Granite gravel is a perfect option for adorning the topsoil of potted plants because of this, in addition to using it as a garden ornament. In fact, spreading gravel over the surface of the soil can aid with weed management and is a terrific way to aerate and improve the drainage of muddy or clay-rich soils in your garden.
Granite gravel is not a perfect substitute for perlite, mostly because of its weight. It will make potted plant soil mixtures considerably heavier, so use pea gravel instead for smaller pots, especially indoors. Gravel is also a poor choice for germination since immature plants will find it difficult to push through due to its weight.
Vermiculite
Vermiculite is a mineral that is extremely absorbent and is used in both indoor and outdoor gardening. It is lightweight, pH-neutral, and does not degrade like perlite. Additionally, it enhances soil structure and aeration.
When used in pots, vermiculite absorbs water and nutrients and holds them in the soil for later use. Vermiculite is actually a far better substitute for perlite if you’re growing plants that require consistently moist soil because it is considerably more absorbent. It is also the best medium for seed germination.
The high absorbency of vermiculite is both one of its benefits and disadvantages. Vermiculite, in contrast to perlite, does not produce a good soil media for plants like cacti and succulents that dislike having their roots constantly moist. Vermiculite is not a good substitute for perlite if you’re seeking for a well-draining potting soil mix.
Calcined clay
Calcined clay is a soil conditioner that is frequently sold under the Turface brand name. It’s probably been used on sporting fields, but it’s also a fantastic substitute for perlite. Although calcined clay is far more absorbent and can hold its weight in water, both are pH neutral and great at retaining moisture.
Cacti and bonsai trees benefit greatly from its ability to maintain the soil’s aeration and improve drainage, making it a wonderful addition to potting mixes. Additionally, because calcined clay is heavier than perlite, watering does not readily wash it away.
We recommend calcined clay without reservation, but we must emphasise that it needs to be replaced from the soil because it will begin to degrade after a few years.
Bark
One of the key ingredients in commercially available potting soil mixtures is bark, particularly pine bark. It aids in soil drainage, keeps soil from being compacted, holds onto water, and gradually distributes nutrients into the soil, depending on its size.
Keep in mind that compared to perlite, fine bark has a lesser air permeability. Because it is organic and biodegradable, bark is a great growing medium for moth orchids and may be used for both indoor and outdoor cultivation.
The most important thing to keep in mind if you’re thinking of using bark in place of perlite is that it is more acidic than the pH neutral perlite, which ranges between 7 and 7.5. The pH of pinewood bark, in particular, ranges from 4.0 to 5.0. If you’re planting magnolias, ferns, carnivorous plants, or other plants that do well in acidic soils, this can be a great benefit. However, most plants favour a pH range of 6.0 to 8.0.
Peat
Peat, which is also known as sphagnum moss, is a great component to soil mixtures. The soil is kept moist for extended periods of time because to its great water retention ability. It helps prevents the soil from being compacted, keeps it aerated, and retains nutrients and minerals because of its fibrous nature.
For growing tomatoes, blueberries, rhododendrons, and other acid-loving plants, some gardeners and houseplant enthusiasts even go as far as completely substituting peat for soil.
Bark and peat both have an acidic composition. Check the soil pH requirements of the plants you intend to grow before deciding to use peat rather than perlite. Another thing to note is that even though peat is biodegradable, mining for it damages the local ecosystems where it comes from and is not environmentally friendly.
Coir
Coir, often known as coco coir, is a fibre made from the husks of coconuts. It has a texture that is pretty similar to peat moss, and gardeners are using it more frequently because it is easier to create. However, how does it contrast with perlite?
Both coir and perlite are lightweight, help with drainage, and increase air permeability by dissolving dense soils. Coir is a wonderful choice for plants that need moist soil since it has a larger water retention capacity than perlite and, unlike perlite, has a higher ability to absorb nutrients and release them into the soil.
There’s a good reason why coir is frequently suggested as an alternative to perlite instead of peat moss: coir has an acidic pH range of 5.2 to 6.5. Remember that coir has little to no nutrients, so you will need to fertilise your plants frequently if you intend to utilise it as a growing medium on its own.
Sand
Sand may be used in place of perlite, depending on how coarse it is. Sand and perlite are comparable in that they both promote drainage, are pH-neutral, sterile, and are devoid of nutrients. While sand initially absorbs water, it does not hold onto it like perlite does over time, especially the coarser forms.
One of the greatest options for garden soils, particularly clay-rich or highly compacted ones, is sand. Instead of using the extremely fine sand seen in playgrounds for children or construction sites, you should use coarse sand that is around 1.52mm broad.
Remember that sand is significantly heavier than perlite when utilising it, especially if you intend to use it for potted houseplants.