Why Wood Ash Works for Indoor Plants
When used in small amounts, wood ash can:
- Improve soil drainage and aeration
- Support steady, controlled plant growth
- Reduce soil acidity slightly
- Strengthen roots and stems
- Enhance long-term soil fertility
This makes it especially useful for low-maintenance houseplants and drought-tolerant varieties.
Best Plants for Wood Ash Fertilizer
Wood ash is most suitable for plants that prefer neutral to slightly alkaline soil, including:
- Snake plant (Sansevieria)
- Succulents and cacti
- ZZ plant
- Jade plant
- Geraniums
- Certain flowering houseplants
It is commonly used in indoor plant care routines focused on natural fertilization.
How to Apply Wood Ash to Potted Plants
Dry Application (Most Common Method)
- Use only a small pinch of fine wood ash
- Sprinkle lightly on the soil surface (not on leaves)
- Gently mix into the top layer of soil
- Water lightly to help nutrients absorb
Apply once every 2–3 months at most.
Wood Ash Tea (Liquid Method)
- Mix 1 teaspoon of wood ash into 1 liter of water
- Let it sit for 12–24 hours
- Stir well and use the clear liquid to water soil
- Discard remaining sediment
This method is safer for indoor plants and reduces the risk of overuse.