Microsorum diversifolium ‘Kangaroo Fern’: The Easygoing Fern with a Wild Side

Appearance and Growth Habit

Meet Microsorum diversifolium, better known as the Kangaroo Fern! This unusual fern is a fantastic choice for plant lovers who want something a little different from the usual leafy crowd. Native to Australia and New Zealand, it gets its common name from its distinctive leaves, which can resemble the shape of a kangaroo’s foot. The foliage is glossy, deep green and wonderfully variable, with some leaves developing smooth edges while others form attractive lobes and divisions. No two leaves have to look exactly alike, which is part of its charm.

Unlike many ferns that grow in tight, upright clumps, Kangaroo Fern has a creeping growth habit. It spreads through thick, furry rhizomes that travel along the surface of the soil or growing medium. These rhizomes produce roots and new fronds as the plant expands, allowing it to form a lush, spreading carpet over time. Just remember that those rhizomes are part of the plant's growth system, not random fuzzy roots that need tidying up!

Growth Speed and Mature Size

Kangaroo Fern is generally a moderate grower under good conditions. It is not going to take over your living room overnight, but give it consistent moisture, suitable light and warmth, and it will gradually reward you with fresh fronds and a fuller appearance. Growth may slow considerably during cooler winter months or when light levels drop.

Indoors, individual fronds can commonly reach around 20–60 cm long, depending on the growing conditions and variety, while the plant can spread 30–90 cm or more over time. These are approximate dimensions rather than strict limits. A happy plant in a spacious pot or hanging basket may spread much further than one growing in a small container. Its naturally arching foliage makes it particularly attractive on shelves, plant stands and in hanging displays.

Light Requirements

Bright, indirect light is ideal for Kangaroo Fern. Think of a position near an east-facing window or a little way back from a bright south-facing window in the Southern Hemisphere. It can also adapt to moderate light, although growth may become slower and the foliage less vigorous.

Avoid harsh, direct afternoon sunlight, especially during hot South African summers. Strong sun can scorch the fronds, leaving them pale, brown or crispy around the edges. Very dark corners are not ideal either, as insufficient light can contribute to slow growth and persistently damp growing media. If your fern is stretching towards the window or producing smaller fronds than usual, try moving it somewhere brighter without exposing it to direct sun.

Watering Requirements

Kangaroo Fern likes consistently moist growing media, but it does not want to sit in a swamp. Water when the top layer of the substrate begins to dry slightly, checking the moisture below the surface as well. The aim is to keep the root zone evenly moist without leaving the roots permanently waterlogged.

Water thoroughly until excess water drains from the bottom of the pot, then empty the saucer or outer pot. During warm weather, you may need to water more frequently, while cooler conditions generally mean less frequent watering. Do not follow a rigid watering schedule without checking the actual moisture level first.

If the fronds begin to droop and the growing medium feels dry, your fern may be asking for a drink. Yellowing fronds combined with constantly wet soil, however, can indicate overwatering or root problems. The trick is finding that happy middle ground between thirsty and swimming.

Humidity Requirements

Kangaroo Fern appreciates moderate to high humidity, ideally around 50–70% or higher if the air is warm and well ventilated. It can adapt to average household humidity better than some delicate tropical ferns, making it a relatively forgiving option for indoor growers.

If your home becomes particularly dry during winter, consider grouping plants together, using a humidifier or placing the pot near a humidity tray without allowing the base of the pot to sit in water. Misting can provide a brief increase in surface moisture, but it is not a reliable way to maintain humidity over time.

Good airflow is just as important as humidity. Warm, stagnant conditions combined with constantly wet foliage can encourage fungal problems. Aim for humid air with gentle air movement rather than a stuffy, enclosed environment.

Temperature Requirements

Kangaroo Fern generally grows well in temperatures around 15–27°C. It can tolerate some cooler conditions once established, but growth slows as temperatures drop. Protect it from frost, prolonged cold and sudden temperature fluctuations.

In South Africa, take extra care during winter if the plant is kept near cold windows, exposed patios or draughty doors. Likewise, avoid placing it directly beside heaters or in the path of hot, dry air-conditioning. Temperatures consistently above 30°C can increase moisture loss and stress the plant, particularly when humidity is low.

Soil and Growing Medium

The ideal growing medium for Kangaroo Fern is airy, moisture-retentive and well draining. A good quality indoor potting mix amended with orchid bark, coco chips, perlite or pumice provides a useful balance between moisture retention and oxygen around the roots.

Because this fern spreads through surface-growing rhizomes, avoid burying those rhizomes deeply beneath the substrate. Keep them resting on or just above the surface, where they can spread naturally and produce new growth.

A dense, compacted mix that stays wet for too long can suffocate the roots and increase the risk of root rot. On the other hand, an extremely coarse mix that dries out too quickly may leave the fronds looking tired and dehydrated. Aim for a mix that holds moisture without becoming heavy and soggy.

Fertilising for Healthy Growth

Feed your Kangaroo Fern during the active growing season with a balanced liquid houseplant fertiliser diluted to approximately half the recommended strength. Feeding every four to six weeks during spring and summer is a reasonable starting point, provided the plant is actively growing.

Avoid applying strong fertiliser to dry roots, as this can cause damage. Water first if the substrate is particularly dry, or feed during normal watering. Reduce feeding in autumn and winter when growth slows, and do not fertilise a plant that is severely stressed or recovering from root rot.

More fertiliser does not automatically mean bigger leaves. Excess salts can build up in the substrate and cause brown tips or root damage. Consistent care, appropriate light and healthy roots will do far more for your fern than a heavy-handed feeding routine.

Climbing Support: Moss Poles, Planks or Hanging Growth?

Here is where Kangaroo Fern does things a little differently from your typical climbing aroid. Although it can grow epiphytically on trees and other surfaces in nature, it is not a traditional climbing plant that needs a moss pole to produce larger leaves. Its creeping rhizomes spread horizontally, attaching themselves to suitable surfaces as they grow.

A hanging basket or a wide, shallow pot is usually the easiest way to show off its natural growth habit. Allow the fronds to arch and cascade over the edges for a relaxed, jungle-inspired display. If you prefer a mounted fern, a cork bark slab or wooden plank can work well, provided you secure the rhizome gently and keep the roots consistently moist while the plant establishes. A moss-covered mounting board is another option, but it will need regular monitoring to prevent the rhizome from drying out.

A traditional upright moss pole is generally unnecessary. If your goal is larger, healthier fronds, focus on good lighting, consistent moisture, adequate nutrition and a healthy root system rather than forcing the plant to climb. Let this fern do its own thing; it has absolutely no interest in following the aroid rulebook!

How to Encourage Larger Leaves and Fuller Growth

Larger fronds come from a combination of maturity and good growing conditions. Provide bright, indirect light, a spacious root zone, consistent watering and gentle feeding during the growing season. A mature, established plant generally produces more impressive foliage than a recently divided or stressed specimen.

Avoid repeatedly moving your fern from one environment to another. Consistency helps it settle and direct its energy into new growth. Keep the creeping rhizomes healthy and exposed at the surface of the growing medium, and give the plant room to spread rather than crowding it into a narrow container.

If new fronds are consistently smaller than older ones, check whether the plant needs brighter indirect light, whether the roots have filled the pot, and whether watering has been inconsistent. Remember that individual fronds naturally vary in shape and size, so not every new leaf needs to be bigger than the last to indicate healthy growth.

Winter Care Tips

Winter care in South Africa is mostly about adjusting to cooler temperatures, shorter days and slower growth. Your Kangaroo Fern may produce fewer new fronds during winter, and that is perfectly normal. Do not try to force growth by increasing fertiliser or keeping the substrate permanently wet.

Water when the growing medium begins to dry slightly at the surface, but expect to water less frequently if the room is cooler. Keep the plant away from cold draughts, frost and heating appliances that dry out the foliage. If your fern lives near a window, make sure the leaves are not pressed against cold glass.

Continue providing bright, indirect light, and rotate the pot occasionally if growth begins leaning towards the window. Hold off on major repotting or propagation projects until active growth resumes, unless the plant has a genuine problem that needs immediate attention.

Repotting: When and How Often?

Kangaroo Fern generally benefits from repotting every one to two years, although the right timing depends on its growth rate and the size of its container. Spring is an excellent time to repot because the plant has the warmer growing season ahead of it.

Look for roots emerging through the drainage holes, a pot that dries out unusually quickly, or a creeping rhizome that has completely outgrown the available space. A full-looking plant is not automatically pot-bound, so inspect the root system before deciding it needs a bigger home.

Choose a container with drainage holes that is only modestly larger than the existing pot, or use a wider, shallow container if you want to encourage spreading growth. Gently loosen the roots and remove any dead or rotting material. Replant using fresh, airy substrate, keeping the rhizomes at or just above the surface. Water thoroughly, allow excess water to drain and place the plant somewhere with stable light and temperature while it settles.

Avoid burying the rhizomes to make the plant look neater. They need access to air, and burying them in damp substrate can encourage rot.

Hydroponics and Semi-Hydro Growing

Kangaroo Fern can be experimented with in semi-hydroponic systems, including LECA, but it is not as widely established in these setups as many popular aroids. It naturally grows in both terrestrial and epiphytic conditions, so its ability to adapt will depend on how the root zone is managed.

For semi-hydro, use clean LECA and a suitable reservoir system, ensuring the transition from soil-grown roots to semi-hydro conditions is gradual. Remove the old substrate carefully, inspect the roots and eliminate any decaying material. Keep the water level controlled so that the entire rhizome is not submerged. The rhizome should remain above the wettest part of the system, with enough moisture available to the roots.

Expect some adjustment after the transition, and monitor the plant for yellowing fronds, soft rhizomes or roots that deteriorate rather than develop healthy new growth. Use a complete hydroponic nutrient solution at an appropriately diluted strength once the plant has begun adapting.

If you are new to growing ferns, a well-draining potting mix is the more straightforward option. There is no need to move a healthy soil-grown plant into LECA simply because the rest of your plant collection has made the switch!

Preventing Root Rot

Root rot is usually associated with a combination of excessive moisture, poor aeration and damaged roots. Although Kangaroo Fern appreciates moisture, its roots still need oxygen. Keeping it permanently saturated is not the same as keeping it hydrated.

Always use a container with drainage holes and an airy growing medium. Never leave the pot sitting in water for extended periods, and avoid burying the creeping rhizomes beneath wet substrate. Check the moisture level before watering rather than automatically watering on the same day every week.

If the plant starts yellowing while the substrate remains wet, inspect the roots and rhizomes. Healthy roots should feel firm, while rotting tissue may become dark, soft or unpleasant-smelling. Remove damaged material with clean tools, replace saturated or decomposed substrate, and repot into a fresh, well-aerated mix.

After treating root problems, water carefully and allow the plant time to recover. Avoid fertilising until it shows signs of healthy new growth.

Shipping Stress and Acclimation After Purchase

Plants travelling through courier networks can experience temperature changes, low humidity, movement and several days without their usual growing conditions. Kangaroo Fern is reasonably adaptable, but it may still arrive looking a little less fabulous than it did when it left the nursery.

Once your fern arrives, unpack it promptly and inspect the foliage, roots and rhizomes. Remove any packaging that traps excess moisture around the plant, and check that the substrate is not completely dry or waterlogged. Water only if the growing medium needs it.

Place the plant in a stable position with moderate to bright indirect light, away from direct sun, heaters and cold draughts. Give it several days to settle before making major changes to its environment. Avoid immediate repotting unless the substrate is badly degraded, the roots are rotting or the plant is otherwise in urgent need of attention.

A little drooping or the loss of an older frond can occur after shipping. Watch for fresh, firm growth over the following weeks rather than expecting the plant to look perfect immediately. Do not compensate for shipping stress by overwatering, overfeeding or placing it in direct sunlight. The recovery plan is consistency, not a plant spa involving twelve different treatments.

Signs Your Kangaroo Fern Is Happy

A happy Kangaroo Fern produces firm, glossy green fronds and gradually spreads its creeping rhizomes across the growing medium. New fronds may emerge curled or tightly rolled before unfurling, which is a normal part of fern development.

The plant should maintain a reasonably consistent colour, with no widespread yellowing, crispy edges or soft, darkened rhizomes. Its growth may be slow during winter, but fresh fronds during warmer months are a good sign that the plant is settled.

You may also notice small, round brown structures on the undersides of mature fronds. These are often sori, which contain the fern's spores. They are a normal reproductive feature and should not be confused with pests or a disease. If the spots are raised insects, accompanied by sticky residue, webbing or irregular damage, investigate further.

Pests: Spider Mites, Thrips and Mealybugs

Kangaroo Fern is not immune to houseplant pests, although a healthy specimen grown in suitable conditions is generally less likely to struggle than a stressed one. Regular inspections help catch problems before they spread to the rest of your collection.

Spider mites can become a problem in warm, dry indoor environments. Look for fine webbing, tiny moving dots and pale stippling on the fronds. Check the undersides of leaves carefully, where these pests often hide. Increasing humidity may help create more suitable growing conditions for the fern, but an established infestation needs direct treatment.

Thrips can cause silvery or pale scarring, distorted new growth and tiny dark specks of waste on the foliage. Mealybugs appear as small, white, cottony clusters, often around the bases of fronds, roots or crevices in the rhizomes. Scale insects may also occasionally appear as small, firmly attached bumps.

If you find pests, isolate the plant and inspect nearby plants. Remove visible insects where practical, rinse the foliage gently and use a suitable plant-safe treatment according to its label. Test any spray on a small area first, especially on delicate new fronds, and repeat treatment as directed if the pest's life cycle requires it.

Propagation: Making More Kangaroo Ferns

The easiest way to propagate Kangaroo Fern is by dividing its creeping rhizomes. It is a satisfying way to create another plant for your collection without waiting for spores to develop into mature ferns.

Choose a healthy, established plant and gently remove it from its pot. Identify a section of rhizome with healthy roots and at least one healthy frond or growing point. Using a clean, sharp blade, separate the section and place it on the surface of fresh, moist, well-draining substrate. Keep the rhizome exposed rather than burying it.

Maintain stable warmth, moderate to high humidity and indirect light while the division establishes. Keep the substrate lightly moist, not saturated, and avoid fertilising until new growth indicates that the plant is settling in.

Propagation through spores is also possible, but it is slower and requires more patience and attention to humidity. For most home growers, rhizome division is the easiest and most reliable method.

Common Problems and Troubleshooting

Yellowing fronds: A few older fronds yellowing naturally is not necessarily a concern. Widespread yellowing, especially when the substrate is wet, may indicate overwatering, poor drainage or root damage. Check the root zone before increasing or decreasing watering.

Brown, crispy edges: These can result from the growing medium drying out too much, low humidity, excessive direct sun or fertiliser salt buildup. Check moisture first, then assess the plant's position and feeding routine.

Drooping fronds: If the substrate is dry, the plant may need water. If it is already wet, inspect the roots and rhizomes instead of adding more water. Root damage can cause wilting even when plenty of moisture is present.

Slow growth: Growth naturally slows during winter. If it remains sluggish during the warmer months, consider whether the plant receives enough indirect light, has healthy roots and receives occasional feeding during active growth.

Soft or dark rhizomes: This is a warning sign of possible rot. Remove damaged tissue and correct the underlying moisture or drainage problem. Healthy rhizomes should remain firm.

Pale or scorched fronds: Move the plant away from harsh direct sunlight and provide bright, filtered light instead.

Brown spots beneath the leaves: These may be normal sori rather than a problem. Look for a regular pattern of small, round clusters that are part of the leaf itself. Insects, by comparison, may move, leave residue or cause additional damage.

Dusty or dull foliage: Gently wipe the fronds with a soft, damp cloth. Clean leaves help the plant look its best and make it easier to spot pests during inspections.

General Care Tricks for a Thriving Fern

One of the best tricks is to learn the difference between the creeping rhizome and the roots. The rhizome is the spreading stem from which new fronds and roots develop. Keep it visible and avoid cutting it back simply because it grows beyond the pot's edge.

Use rainwater or filtered water if your tap water is particularly hard and you notice recurring mineral deposits or leaf-tip damage. This is not essential in every home, but it can be helpful where water quality is an issue.

A wide pot often works better than a deep, narrow one because it gives the rhizomes room to spread. Rotate the pot occasionally for more even light exposure, and remove dead or badly damaged fronds at their base using clean scissors.

Finally, resist the urge to change everything at once when a frond looks unhappy. Check the moisture, inspect the roots and look at the light conditions first. Fern care becomes much easier when you identify the cause rather than treating every symptom with more water.

Is Kangaroo Fern Pet Safe?

Kangaroo Fern is generally considered non-toxic to cats and dogs, making it a useful choice for plant lovers who share their homes with curious pets. It is not known to contain the typical toxic compounds associated with many popular ornamental houseplants.

However, non-toxic does not mean edible. If a pet chews or swallows damaged leaves, the fibrous plant material may still cause mild stomach upset, vomiting or diarrhoea, particularly if a large amount is consumed. Pesticide residues or fertiliser on the foliage may also present a separate risk. Prevent pets from eating the plant, and contact a veterinarian if symptoms develop or a significant quantity has been consumed.

Is Kangaroo Fern Reptile Safe?

Kangaroo Fern is generally regarded as a non-toxic ornamental plant, but pet-safety information for cats and dogs is not the same as a guarantee of safety for every reptile species. Species-specific feeding behaviour, enclosure conditions and the possibility of chemical residues all matter.

For reptile keepers, use plants that have been grown without potentially harmful systemic pesticides or other unsuitable treatments. Wash the foliage and roots thoroughly before introducing the plant into a habitat, and allow it to acclimate in a separate, clean growing environment if its treatment history is uncertain.

Even when a plant is considered non-toxic, reptiles should not be encouraged to eat ornamental foliage unless it is appropriate for their species. Damaged leaves may be swallowed accidentally, and large quantities of plant material can cause digestive problems. Consult a reptile-experienced veterinarian or a trusted species-specific husbandry resource if you are unsure whether this fern is suitable for your animal.

Can Kangaroo Fern Grow in a Terrarium?

Yes! Kangaroo Fern can grow successfully in a terrarium, provided you choose a setup that suits its spreading growth habit and allows the rhizomes to remain healthy. Its glossy foliage, unusual leaf shapes and adaptable nature make it an attractive choice for a humid planted enclosure.

A medium to large terrarium with bright, indirect light, moderate to high humidity and good ventilation is an excellent starting point. The plant works particularly well in a naturalistic forest-style setup with an airy, moisture-retentive substrate, drainage or a suitable false-bottom system, and enough horizontal space for the rhizomes to spread.

A closed terrarium can work, but it requires careful moisture management. Excess condensation, constantly saturated substrate and stagnant air can encourage rot. Keep the rhizomes at the surface, avoid overwatering and open the enclosure when necessary to improve ventilation. A larger enclosure is preferable because this fern can spread considerably as it matures.

In a reptile or amphibian vivarium, confirm that the species' temperature, humidity and lighting requirements match the fern's needs. Make sure the plant has not been treated with unsuitable pesticides, and consider whether the animal is likely to dig up, trample or consume the foliage. For animals that need very hot, dry conditions, Kangaroo Fern may not be an appropriate choice.

For smaller terrariums, select a young plant and be prepared to prune older fronds or divide the rhizomes as it grows. If your goal is a lush, natural forest floor with glossy green foliage, this fern is a lovely candidate, provided you give it enough room to do its thing.

Final Thoughts: Is Kangaroo Fern Worth Growing?

Absolutely! Microsorum diversifolium is an excellent choice for plant enthusiasts who love unusual foliage without wanting a particularly demanding plant. Its glossy, variable fronds, creeping rhizomes and adaptable growth habit make it suitable for pots, hanging baskets, mounted displays and selected terrarium environments.

Give it bright, indirect light, consistent but sensible watering, an airy growing medium and room to spread. Keep its rhizomes above the substrate, watch for pests and adjust your care as the seasons change. With a little consistency, this quirky fern can become a long-lasting feature in your indoor jungle.

And remember: you do not need a moss pole, a complicated setup or a horticultural degree to make this kangaroo happy. Sometimes the secret to a gorgeous fern is simply letting it grow the way nature intended.