Soil & potting mix
Best soil for Alocasia Sarawakensis (Alocasia sarawakensis)
Also called Yucatan Princess, Sarawak alocasia.
More about alocasia sarawakensis
About Alocasia Sarawakensis
Alocasia sarawakensis · also called Yucatan Princess, Sarawak alocasia · tropical
Alocasia sarawakensis, often sold as 'Yucatan Princess', is a large, robust species from Borneo with thick, glossy, deeply quilted dark-green leaves on stout petioles. It is one of the easier big alocasias, wanting bright indirect light, warmth, high humidity and an airy mix. Given space it becomes a substantial, architectural foliage plant.
Preferred mix: Chunky, fast-draining aroid mix
Watch for — Root or rhizome rot: Its large rhizome rots fast in dense, soggy mix. Plant in a chunky aroid blend, water deeply but let the top layer dry, and ensure strong drainage.
Why alocasia sarawakensis needs this mix
Alocasia Sarawakensis is a climbing rainforest aroid — it wants a chunky, bark-heavy mix full of air pockets, not a dense soil that packs around its thick roots.
- In the wild alocasia sarawakensis climbs trees with thick, partly aerial roots that expect air as much as moisture — bark and perlite recreate that open structure.
- A chunky mix drains fast but the coir and compost still hold a steady reservoir between waterings, which suits its "moist then slightly dry" rhythm.
- The big air gaps stop the dense, fast-growing root mass from compacting and choking itself.
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 alocasia sarawakensis struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Plain bagged compost packs tight around alocasia sarawakensis's thick roots, holds water in the centre and triggers the yellow-leaf-then-mushy-stem rot pattern.
- A fine, peaty mix with no bark leaves the roots gasping — growth slows and new leaves come out small and without fenestration.
- Too much moss or water-retaining additive keeps the core permanently wet and invites fungus gnats.
Using ordinary potting soil with no bark or perlite. Alocasia Sarawakensis needs roughly half its volume as chunky, airy material — that single change fixes most "mystery decline".
pH — does it matter for alocasia sarawakensis?
Alocasia Sarawakensis prefers a slightly acidic mix, around pH 5.5-6.5, which a peat-free compost-and-bark blend lands on naturally. It is not fussy enough to need testing in practice.
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
Bagged "aroid mix" is now widely sold and is a fine shortcut for alocasia sarawakensis, but check it actually contains visible bark and perlite — many are just rebranded compost. Mixing your own from the ratio above guarantees the structure.
Drainage and the pot
Any pot with a drainage hole works because the chunky mix does the draining. A pot only a little larger than the rootball avoids a wet, unused core; add a moss pole and the climbing roots will thank you.
Bark breaks down over time, so refresh the mix for alocasia sarawakensis every 12-18 months even if the pot size is still fine — spent, sludgy bark is a common hidden cause of decline. When the time comes, our repotting guide for alocasia sarawakensis covers the timing and technique step by step.
Alocasia Sarawakensis soil — frequently asked questions
What is the best soil mix for alocasia sarawakensis?
2 parts peat-free houseplant compost or coco coir : 2 parts orchid bark (fine-medium) : 1 part perlite : 1 part horticultural charcoal. In the wild alocasia sarawakensis climbs trees with thick, partly aerial roots that expect air as much as moisture — bark and perlite recreate that open structure.
Can I use normal potting soil for alocasia sarawakensis?
Plain bagged compost packs tight around alocasia sarawakensis's thick roots, holds water in the centre and triggers the yellow-leaf-then-mushy-stem rot pattern. Bagged "aroid mix" is now widely sold and is a fine shortcut for alocasia sarawakensis, but check it actually contains visible bark and perlite — many are just rebranded compost. Mixing your own from the ratio above guarantees the structure.
Does alocasia sarawakensis need a special pH?
Alocasia Sarawakensis prefers a slightly acidic mix, around pH 5.5-6.5, which a peat-free compost-and-bark blend lands on naturally. It is not fussy enough to need testing in practice.
Should I buy a bagged mix or make my own for alocasia sarawakensis?
Bagged "aroid mix" is now widely sold and is a fine shortcut for alocasia sarawakensis, but check it actually contains visible bark and perlite — many are just rebranded compost. Mixing your own from the ratio above guarantees the structure.
How often should I refresh the soil for alocasia sarawakensis?
Bark breaks down over time, so refresh the mix for alocasia sarawakensis every 12-18 months even if the pot size is still fine — spent, sludgy bark is a common hidden cause of decline. Any pot with a drainage hole works because the chunky mix does the draining. A pot only a little larger than the rootball avoids a wet, unused core; add a moss pole and the climbing roots will thank you.
Keep reading
- Alocasia Sarawakensis care — the full brief (light, water, humidity, problems, pet safety)
- How often to water alocasia sarawakensis — the schedule the mix feeds into
- Repotting alocasia sarawakensis — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Root rot — how the wrong soil starts it, and how to save the plant
- Overwatered plant — signs and recovery
- Should I water my plant? The simple check first
- Best soil for monstera
- Best soil for pothos
- Best soil for fiddle leaf fig
- All 2464 soil and potting-mix guides in the Growli library