Soil & potting mix
Best soil for Simon Bamboo (Pleioblastus simonii)
Also called Simon Bamboo, Medake.
More about simon bamboo
About Simon Bamboo
Pleioblastus simonii · also called Simon Bamboo, Medake · tropical
Pleioblastus simonii (Medake) is a tall, vigorous running bamboo native to Japan reaching 3–6 m in warm climates. It forms dense thickets with slender culms and lance-shaped mid-green leaves. Hardy to USDA zone 6, it works well as a privacy screen or windbreak. Running rhizomes require containment; cut back crowded clumps every few years to rejuvenate.
Preferred mix: Deep, fertile, free-draining loam
Why simon bamboo needs this mix
Simon Bamboo is an easy-going houseplant — it just wants a free-draining general mix that holds some moisture but never stays soggy.
- Simon Bamboo is adaptable, but like most houseplants it still needs air at the roots — a mix that drains freely while holding a working moisture reserve.
- A little perlite or bark stops ordinary compost compacting into an airless block over time, which is the slow, common cause of decline.
- It is not fussy about pH or special ingredients; getting the air-to-moisture balance right is what matters.
For the full picture on what makes up a good mix, see our guide to the main types of soil and potting media — it explains why each ingredient above behaves the way it does.
What goes wrong with the wrong mix
The wrong soil is one of the most common reasons simon bamboo struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates simon bamboo's roots.
- A pure peat mix that dries to a hard, water-repelling block is hard to re-wet and stresses the plant.
- No drainage hole turns even a good mix into a stagnant, root-rotting sump.
Reusing tired, compacted old compost or skipping the perlite. A free-draining mix in a pot with a hole solves most "why is it struggling" cases for simon bamboo.
pH — does it matter for simon bamboo?
Simon Bamboo is not fussy about pH — a slightly acidic to neutral mix (around pH 6.0-7.0), which a standard peat-free compost provides, is perfectly fine. No testing needed.
If you want to check or adjust it, the soil pH guide walks through testing and the safe ways to nudge a mix more acidic or more alkaline.
DIY mix vs a bagged one
A decent bagged houseplant compost works for simon bamboo as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
Drainage and the pot
A pot with a drainage hole and a saucer you empty after watering is all simon bamboo needs — the free-draining mix does the rest.
Refresh simon bamboo's mix every 18-24 months; even good compost slumps and compacts, and fresh, airy mix is often the simplest fix for a tired plant. When the time comes, our repotting guide for simon bamboo covers the timing and technique step by step.
Simon Bamboo soil — frequently asked questions
What is the best soil mix for simon bamboo?
3 parts peat-free houseplant compost : 1 part perlite : 1 part orchid bark or coco chips (optional). Simon Bamboo is adaptable, but like most houseplants it still needs air at the roots — a mix that drains freely while holding a working moisture reserve.
Can I use normal potting soil for simon bamboo?
Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates simon bamboo's roots. A decent bagged houseplant compost works for simon bamboo as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
Does simon bamboo need a special pH?
Simon Bamboo is not fussy about pH — a slightly acidic to neutral mix (around pH 6.0-7.0), which a standard peat-free compost provides, is perfectly fine. No testing needed.
Should I buy a bagged mix or make my own for simon bamboo?
A decent bagged houseplant compost works for simon bamboo as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
How often should I refresh the soil for simon bamboo?
Refresh simon bamboo's mix every 18-24 months; even good compost slumps and compacts, and fresh, airy mix is often the simplest fix for a tired plant. A pot with a drainage hole and a saucer you empty after watering is all simon bamboo needs — the free-draining mix does the rest.
Keep reading
- Simon Bamboo care — the full brief (light, water, humidity, problems, pet safety)
- How often to water simon bamboo — the schedule the mix feeds into
- Repotting simon bamboo — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Should I water my plant? The simple check first
- Overwatered plant — signs and recovery
- Root rot — how the wrong soil starts it, and how to save the plant
- Best soil for alocasia brancifolia
- Best soil for alocasia triangularis
- Best soil for alocasia reversa
- All 8452 soil and potting-mix guides in the Growli library