Orchids need a very different potting material that provides drainage and air circulation. LECA (lightweight expanded clay aggregate) is one of the best materials you can use for orchids. This material is made of small, fired clay balls that have been expanded through steam or pressure.

LECA is a popular soil amendment because it improves soil drainage and aeration. Additionally, it is relatively lightweight and can be used to cover a wide range of rooting depths.

In this article, I will help you know some tips on using LECA for your orchids.

How To Use LECA For Better Orchid Health And Growth?

LECA is a lightweight, porous material that can help drainage and aeration while supporting the roots. Here are some tips on how to use LECA for better orchid health and growth: 

  • Remove your orchid from its pot and shake off any old potting mix.
  • Next, take a look at the roots. If they are tightly packed or have started to circle the pot, it’s time for a repotting.
  • Gently loosen the roots and tease them out before replanting in a pot with fresh potting mix and LECA.
  • The LECA will help improve drainage and aeration while also supporting the roots. 
  • LECA can also be used as an amendment to your orchid’s soil. Add 1-2 tablespoons per pot of soil.
  • Use this mixture sparingly; too much LECA can cause it to become heavy and difficult to work with.
  • Start by adding LECA to the back half of the pot and work your way forward until you’ve covered the entire surface.
  • Be sure to water well after applying LECA, as it will help to improve drainage and aeration in your orchid’s soil.

There you have it! LECA can help improve orchid health and growth by supporting the roots, improving drainage and aeration, and being an amendment to the soil.

How do you water orchids in LECA?

Many people don’t realize that orchids need different care than other houseplants. One of the best ways to water orchids is with LECA (lightweight expanded clay aggregate).

Here’s how to water your orchid with LECA:

  1.  Fill a container with LECA stones and place your orchid pot on top.
  2.  Add water until it reaches the top of the stones.
  3.  Allow the water to soak into the pot for about 15 minutes, then remove any excess water.
  4.  Repeat this process every week or as needed.

LECA is a great way to water orchids because it provides consistent moisture without overwatering.

Benefits of using LECA for orchids

When it comes to orchids, the possibilities are endless. With so many different types and colors, it can be hard to know where to start. LECA is an excellent fertilizer for plants that could use extra oomph. Here are some benefits of using LECA for orchids:

  • LECA is affordable. Unlike other orchid additives, LECA is easily affordable for just about anyone. It’s also inexpensive and widely available, so it’s a no-brainer for those on a tight budget.
  • LECA gives orchids a fun and unique look. Whether you’re looking for something subtle or eye-catching, LECA can help you get the look you want without spending too much money.
  • LECA helps orchid plants grow faster and healthier than usual. Not only does LECA help increase growth rates, but it also helps keep plants healthy and free from pests and diseases.
  • LECA doesn’t harm plants in any way – even when used excessively! Unlike other additives that can injure plant roots or leaves, LECA is harmless to orchids and won’t cause any harm.
  • LECA is easy to use. Unlike other additives that require a lot of preparation and attention, you don’t need special skills or knowledge to use LECA.
  • LECA smells great! Not only does LECA help increase growth rates and keep plants healthy, but it also has a pleasant scent that makes your orchids smell great!
  • LECA can be used on both indoor and outdoor plants. Whether you have an indoor or outdoor plant, LECA can help increase growth rates and improve your plants’ overall health and appearance.

In the search for a supplement to help your orchids reach their full potential, LECA is a great option. It is easy to use and has a long shelf life, making it a great choice for home gardeners and commercial growers.

Frequently Asked Questions (FAQ)

Can you repot an orchid in LECA?

You can repot an orchid in LECA if the plant is healthy and has a good root system. There should be enough room in the new pot for the orchid’s roots but not so much that they are squashed. The potting mix should contain moderate moisture, and You should plant the orchid at its original depth. If possible, place the new pot in a shaded location until the orchid’s roots become established.

Can you mix LECA with soil?

The short answer is yes; you can mix LECA with soil. As long as you keep in mind the following considerations:

  1. You should ensure that the LECA and soil are compatible, meaning they have similar pH levels and nutrient profiles.
  2. It would help if you mixed them in the correct ratio.
  3. It would help if you watered the mixture regularly to ensure that the plants have access to the necessary nutrients.

What plants can grow in LECA?

Plants that can grow in LECA thrive in acidic soils. The porous structure of LECA allows for good drainage and air circulation, which is beneficial for plants that prefer acidic soil conditions. Some plants that can grow in LECA include rhododendrons, azaleas, hollies, and dogwoods.

Can all plants be grown in LECA?

Most plants can be grown in LECA, but there are some exceptions. The most important factor to consider when planting in LECA is the pH of the soil. The ideal pH range for most plants is 6.0-7.0, so you will need to adjust the pH of your soil accordingly if it is not in this range. Another thing to consider is the type of plant you are growing. Some plants prefer more acidic or alkaline soil than others.


In conclusion, using LECA for orchids is a great way to improve drainage and help the plant thrive. Be sure to follow the proper ratio of LECA to the soil when planting, and monitor the moisture levels regularly. Doing this ensures that your orchid gets all the nutrients and water it needs to thrive!