Calathea Soil Mix Recipe & Potting Calculator

Looking to repot your Calathea? Using the right soil is critical. Our free calculator provides the exact Damp Jungle & Fern Soil recipe and calculates exactly how many liters or quarts of soil you need for your specific pot size.

Damp Jungle & Fern Soil

💡 Why: Plants like Ferns, Calatheas, and Peace Lilies hate drying out. They need a soil that acts like a sponge to keep their fine, delicate roots constantly wrapped in humidity.

⚡ Store Shortcut: Take standard Potting Mix and mix in extra Coco Coir or Peat Moss to boost water retention.
Ideal NPK Ratio
N 3
P 1
K 2
Target pH 5.5 - 6.5
Drainage Speed Slow and steady
Min Pot Depth 6 inches

Calculate Your Exact Soil Need

5.8 Liters (5.3 Dry Qts) ~8.8 lbs wet (4.0 kg)