Soil & potting mix
Best soil for Mother Fern (Asplenium bulbiferum)
Also called Hen and chicken fern, Pikopiko.
More about mother fern
About Mother Fern
Asplenium bulbiferum · also called Hen and chicken fern, Pikopiko · houseplant
The mother fern is prized for the tiny plantlets, or 'chicks', that form along its finely divided, lacy fronds and root where they touch soil. Native to New Zealand and Australia, it has a soft, ferny texture and likes cool, humid, shaded conditions. Its self-propagating bulbils make it easy and rewarding to multiply at home.
Preferred mix: Rich, moisture-retentive, free-draining mix
Watch for — Crispy, browning fronds: Low humidity or the soil drying out. Keep humidity high and the mix evenly moist; trim damaged fronds at the base.
Why mother fern needs this mix
Mother Fern hates drying out, so it wants a mix that stays evenly moist — but it still needs perlite so "moist" never tips into "waterlogged".
- Mother Fern 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 mother fern 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 mother fern — 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 mother fern dry out. It needs a moisture-retentive but still airy blend.
pH — does it matter for mother fern?
Mother Fern 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 mother fern 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 mother fern'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 mother fern covers the timing and technique step by step.
Mother Fern soil — frequently asked questions
What is the best soil mix for mother fern?
3 parts peat-free houseplant compost : 1 part coco coir : 1 part perlite. Mother Fern 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 mother fern?
A free-draining, gritty mix dries too fast for mother fern — you get crispy brown edges and frond or leaf drop within days of one missed watering. A good peat-free houseplant compost works for mother fern 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 mother fern need a special pH?
Mother Fern 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 mother fern?
A good peat-free houseplant compost works for mother fern 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 mother fern?
Peat-free mixes slump and compact as they hold moisture, so refresh mother fern'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
- Mother Fern care — the full brief (light, water, humidity, problems, pet safety)
- How often to water mother fern — the schedule the mix feeds into
- Repotting mother fern — 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
- Best soil for snake plant
- Best soil for dracaena
- Best soil for peperomia
- All 1284 soil and potting-mix guides in the Growli library