Don t use fine sand.
Quick draining soil mix.
When planting perennial plants that like well drained soils in clay the best thing to do is to create a raised bed or berm mounded pile of soil.
Personally i would add at least some soil.
It retains just right amount of moisture for the plant and reduces the chance of common root rot caused by over watering.
Specially formulated for use with cactus palm citrus and succulents.
In order to drain well soil should have large air spaces.
It also contains forest products sand and perlite to help prevent soil compaction and improve drainage.
The fast draining formula is enriched with miracle gro plant food so you can be sure your plants are getting the nutrients they deserve.
Consistent moisture levels are important to maintain in order to help your plants grow.
This high quality lithops potting medium use a quick draining soil mix combined with pumice river gravel sand and etc.
Check soil drainage dig a hole once the soil and compost are completely combined that is 12 inches square and about 12 inches deep.
Bgi select quick draining soil is an all natural mixture of pine bark canadian peat florida peat and dolomite.
The essential element in well drained soil is oxygen.
Each bag of potting soil will list the ingredients so check before buying.
Also you will need to water much more frequently because the mix won t retain much water.
A soil less mix should work as long as you fertilize the plants periodically because coir and calcined clay don t contain any nutrients.
Mix the native clay half and half with coarse sand or crusher fines.