RPF Soil Mixes
We make five soil mixes, and the difference between them comes down to one thing: how much water each one holds and how long it holds it. Chunky Orchid drains fastest. Aroid Moist holds the most. The other three sit at steps in between. Choosing the right one is less about the name on the bag and more about matching retention to the plant and the conditions it actually lives in.
Here is what goes into each mix, what each ingredient is doing, and how to decide which one belongs in your next repo
Chunky Orchid Mix
Chunky Orchid is the fastest-draining mix we make: large perlite, large bark chunks, and coco chips, with no peat. Water moves through it almost immediately and the roots stay surrounded by air. It suits orchids and other epiphytes whose roots expect to dry quickly after every watering. It also works as an amendment when you want to open up a denser mix.
RPF Chunky Orchid Soil Mix - 1 Gallon
Full Specs & Details →Hoya Coco Blend
Hoya Coco Blend is built on coco husk and coconut chips, with perlite and a portion of sphagnum peat moss, plus mycorrhizae, a wetting agent, and pH adjusters. Retention is low. It holds slightly more than Chunky Orchid, enough to keep fine roots from desiccating, but it still dries out between waterings. That cycle is what hoyas want: a thorough watering, then a stretch of dryness before the next one.
RPF Coco Blend Mix - 1 Gallon
Full Specs & Details →Aroid Chunky Mix
Aroid Chunky suits aroids with epiphytic or hemiepiphytic habits that want air at the roots, including many Anthuriums and climbing Philodendrons. It is also the forgiving choice for growers who water often or keep plants in high humidity.
RPF Aroid Chunky Soil Mix - 1 Gallon
Full Specs & Details →Aroid Balanced Mix
Aroid Balance has high retention and is the middle ground for most aroids in most homes. If you are unsure, start here.
RPF Aroid Balanced Soil Mix - 1 Gallon
Full Specs & Details →Aroid Moisture Mix
Aroid Moist holds the most water of anything we make. It is for plants that decline when allowed to dry out, and for setups where water leaves the pot quickly: strong light, warm temperatures, low ambient humidity, or terracotta.