Soil & potting mix
Best soil for Colocasia Blue Hawaii (Colocasia esculenta 'Blue Hawaii')
Also called Blue Hawaii taro, Blue Hawaii elephant ear.
More about colocasia blue hawaii
About Colocasia Blue Hawaii
Colocasia esculenta 'Blue Hawaii' · also called Blue Hawaii taro, Blue Hawaii elephant ear · tropical
Colocasia 'Blue Hawaii' is a compact elephant ear with chartreuse-green leaves marked by dark purple-black veins and burgundy undersides. It thrives in warmth, bright light and constantly moist, rich soil, growing 90-120 cm tall. A bog-loving aroid, it sulks in cold or dryness and overwinters as a dormant tuber in cooler climates.
Preferred mix: Rich, moisture-retentive loam
Watch for — Browning leaf edges: Caused by dry air or letting the soil dry out; this is a bog plant, so keep it consistently moist and raise humidity.
Why colocasia blue hawaii needs this mix
Colocasia Blue Hawaii hates drying out, so it wants a mix that stays evenly moist — but it still needs perlite so "moist" never tips into "waterlogged".
- Colocasia Blue Hawaii comes from damp, shaded forest floors and has fine roots that scorch and brown the moment the rootball dries — the mix has to hold a steady reserve.
- Coir and compost give that reserve, while perlite keeps enough air that the constantly-moist mix does not turn anaerobic.
- Even moisture also keeps its thin leaves from crisping at the edges, which is this plant’s most visible stress signal.
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 colocasia blue hawaii struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- A free-draining, gritty mix dries too fast for colocasia blue hawaii — you get crispy brown edges and frond or leaf drop within days of one missed watering.
- A pure, airless peat mix swings the other way: it holds water but suffocates the fine roots and rots the crown.
- Letting the mix dry to the point it shrinks from the pot is very hard to re-wet evenly and stresses the plant badly.
Using a sharp, fast-draining "houseplant" or cactus-leaning mix that lets colocasia blue hawaii dry out. It needs a moisture-retentive but still airy blend.
pH — does it matter for colocasia blue hawaii?
Colocasia Blue Hawaii prefers a slightly acidic mix (around pH 5.5-6.5); a peat-free compost-and-coir blend sits there naturally, so routine pH testing is unnecessary.
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 good peat-free houseplant compost works for colocasia blue hawaii straight from the bag if you mix in some perlite for air. The DIY ratio above gives a more reliable moisture-to-air balance.
Drainage and the pot
Use a pot with a drainage hole but a less-porous material (plastic or glazed) so it does not dry too fast. Bottom-watering keeps the mix evenly moist without sogging the crown.
Peat-free mixes slump and compact as they hold moisture, so refresh colocasia blue hawaii's mix every 12-18 months to keep air in the rootball even if the pot size is unchanged. When the time comes, our repotting guide for colocasia blue hawaii covers the timing and technique step by step.
Colocasia Blue Hawaii soil — frequently asked questions
What is the best soil mix for colocasia blue hawaii?
3 parts peat-free houseplant compost : 1 part coco coir : 1 part perlite. Colocasia Blue Hawaii comes from damp, shaded forest floors and has fine roots that scorch and brown the moment the rootball dries — the mix has to hold a steady reserve.
Can I use normal potting soil for colocasia blue hawaii?
A free-draining, gritty mix dries too fast for colocasia blue hawaii — you get crispy brown edges and frond or leaf drop within days of one missed watering. A good peat-free houseplant compost works for colocasia blue hawaii straight from the bag if you mix in some perlite for air. The DIY ratio above gives a more reliable moisture-to-air balance.
Does colocasia blue hawaii need a special pH?
Colocasia Blue Hawaii prefers a slightly acidic mix (around pH 5.5-6.5); a peat-free compost-and-coir blend sits there naturally, so routine pH testing is unnecessary.
Should I buy a bagged mix or make my own for colocasia blue hawaii?
A good peat-free houseplant compost works for colocasia blue hawaii straight from the bag if you mix in some perlite for air. The DIY ratio above gives a more reliable moisture-to-air balance.
How often should I refresh the soil for colocasia blue hawaii?
Peat-free mixes slump and compact as they hold moisture, so refresh colocasia blue hawaii's mix every 12-18 months to keep air in the rootball even if the pot size is unchanged. Use a pot with a drainage hole but a less-porous material (plastic or glazed) so it does not dry too fast. Bottom-watering keeps the mix evenly moist without sogging the crown.
Keep reading
- Colocasia Blue Hawaii care — the full brief (light, water, humidity, problems, pet safety)
- How often to water colocasia blue hawaii — the schedule the mix feeds into
- Repotting colocasia blue hawaii — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Underwatered plant — signs and how to rehydrate it
- Why is my plant wilting? Wet vs dry diagnosis
- Should I water my plant? The simple check first
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