Silver Lady Fern is the common name of Blechnum Gibbum and it is a hard fern that grows well in tropical and subtropical climates and is suited to US hardiness zones 10 and 11. Silver lady fern is sometimes also called dwarf tree fern or lucky lady fern and grows up to 3 to 4 feet tall and up to 4 feet in spread. This plant is popular as a houseplant because of the long green fronds that grow beautifully arching around its black trunk making them a perfect choice for pots or shaded areas inside your garden. The fronds of the Silver Lady fern grow in a rosette formation in a very different style which gives the whole garden an architectural feel.
Silver Lady Fern Quick Facts
| Plant Common Name | Silver Lady Fern, lucky lady fern, dwarf tree fern |
| Plant Botanical Name | Blechnum Gibbum |
| Plant Family | Blechnaceae |
| Annual or Perennial | Perennial |
| Plant Size at Maturity | up to 4 feet tall and up to 4 feet wide |
| Sunlight | Partial sunlight to Shade |
| Soil Type | Well draining soil |
| pH of Soil | Slightly Acidic |
| USDA Hardiness Zones | 10a , 10b,11a , 11b |
| Native Area | Fiji, Pacific Island, New Caledonia |
| Toxicity | Not Toxic to humans or pets |
Takeaway: Silver Lady Fern Care
Silver Lady Fern is an easy-to-care plant that needs well-draining moist soil, high humidity, and temperatures between 59 to 82 degrees Fahrenheit and partial shade when planted outdoors while bright indirect light when planted indoors to thrive. Silver Lady Fern is suited for USDA hardiness zones 10 and 11.
How Do You Care for Silver Lady Fern?
Let’s look at all of its care requirements in detail
a) Light Requirements
Silver lady fern requires partial sunlight but doesn’t like direct sunlight so try to give it indirect dappled sunlight for around 4 hours a day. While it likes shade you should not completely keep it in dark corners since it requires medium sunlight also avoid the summer sun completely as its leaves may get burnt if it faces direct sunlight from the summer sun. It can be grown outdoors only in zone 10 and 11 in the USA in zones 9 and below keep them inside during winter and bring them outside only in summer.
b) Soil Requirements
Blechnum Gibbum requires soil that is well draining so that the plant doesn’t face root rot but the soil should also retain moisture. Make your soil mixture organic by adding peat moss, shredded leaves, and coco coir. Ensure that you repot the Silver lady fern in compost added oil if your soil mixture drains out too fast as the soil needs to retain moisture.
c) Water Requirements
Silver lady fern needs to be watered frequently but lightly during summer giving them enough water every few days in summer to keep the soil moist but not soggy. Reduce watering during winters to once in a week once the temperatures fall below 54° Fahrenheit or 12 degrees celsius and ensure that the top layer of the soil has dried out between two watering sessions. Like all ferns, Blechnum Gibbum requires moist soil but overwatering can lead to root rot so you have to maintain a balance, especially during summer. You can also try and use self-watering planters for this plant you need to fill them once they dry out only. You should also take care to not water from overhead as if you let its leaves wet for a period of time the foilage will get damaged. You should also be aware that Silver lady fern cannot handle lime so don’t use hard water on the plant and your tap water is hard then use purified water on this plant or add a few drops of lemon juice to hard water before giving it to the plant.
d) Temperature Requirements
The ideal temperature for Silver lady fern is between 59 degrees Fahrenheit or 15 degrees Celsius and 82 degrees Fahrenheit or 28 degrees Celsius. It can also handle temperatures going down to 50 degrees Fahrenheit or 10 degrees Celsius and higher temperatures up to 90 degrees Fahrenheit or 32 degrees Celsius. It is not a frost-tolerant plant though it may be possible that it may regrow after frost exposure however it’s better not to expose it to frost in the first place.
e) Humidity Requirements
Silver lady fern is a tropical plant and needs high humidity in order to thrive. You should especially use a humidifier to increase humidity during the cold months when a heater is on. You can also fill a tray filled with pebbles and water and let evaporation increase the humidity of the environment.
f) Fertilizer Requirements
You should give Silver lady fern a balanced liquid fertilizer that is diluted in 1 is to 4 ratios two times in a month during spring and summer during the growing season. Do take care to not overfertilize and always dilute the fertilizer before applying. You can also try and use organic compost During winter plants would be dormant and you should not fertilize the plant
Silver Lady Fern Propagation
Silver Lady fern is propagated through spores and needs around 2 months for it to germinate. Spores are little brown spots under the leaves that you can see and are used like seeds for propagation once they mature and turn brown and crispy.
Here are the steps to do the propagation
- Firstly you need to separate the spores from the underleaves if spores cannot be separated despite being brown and crispy then you will have to cut the whole frond.
- Sow the spores in such a way that they are on top of the compost and you don’t submerge them also ensure that the soil is damp then you need to cover the pot with plastic wrap
- Place the pot on a window sill where there is bright indirect sunlight and it is warm
- Do not water the pot just mist the top layer of the soil ensuring that the spores are moist
- Ensure that the temperature is kept above 18 degrees celsius or 64 degrees Fahrenheit and humidity is high to help spores germinate
- Occasionally a plant may end up producing some basal offsets and if that happens you should cut it off and plant it separately
- Once the spores have germinated you can plant them in another pot.
When to Prune Silver Lady Fern
If you are doing any major trimming and pruning of your fern then do it during springtime. regular maintenance pruning and removing of old and brown fronds can be done anytime.
How to Prune Silver Lady Fern
When pruning Use Clean scissors or shears and remove all the yellow leaves and fronds that are browning from the base of the plants. Do pruning regularly to improve the look of your plants and reduce the chance of plants facing any diseases.
Potting and Repotting Silver Lady Fern
You should repot this plant every two years or when it has become root bound during the spring season by choosing a pot that is at least 2 inches wider than the current pot. Take care to ensure that you water the plant well 24 hours before repotting it so that it does not feel shocked after transplanting. You can use a
Silver Lady Fern Common Pests & Plant Diseases
It is not really prone to pests and diseases but sometimes it can face pests like aphids, mealy bugs, caterpillars, or snails or diseases like root rot, rust, powdery mildew, or botrytis. You can easily get rid of these issues by simply wiping the leaves of the plant with a damp cloth or by using insecticides.
Common Problems with Silver Lady Fern
Silver Lady fern can sometimes face these common issues if the care requirements are not followed read on and we suggest how to solve them.
a) Yellowing Leaves
Yellow Leaves in Silver Lady fern could be due to overwatering or leaves being left wet along with being kept in dark locations. Rhizoctonia can develop in your plant if it is kept in a dark location and you end up overwatering the plant or leaving its foliage wet. The best solution for yellowing leaves is to improve sunlight and when watering the plant always water at the soil line and don’t do overhead watering to keep leaves from getting wet. Occasionally underwatering can also cause the leaves to be yellow in which case the solution is that you have to increase the watering frequency.
b) Yellow / Brown Fronds
If the plant is severely underwater you may see yellow/brown fronds and if it is a brand new plant then it may not recover but if it is an older mature plant you can increase the watering frequency and see fresh shoots coming out in a couple of weeks
c) Brown Leaves
If the humidity for a silver lady fern is low then you can see the tips of the leaves turning brown. the best solution is to increase humidity using a pebble tray or a humidifier. Dry air from the heating can also cause this so try to keep it at least 4 feet away from any radiator which is running.
d) Mold on Soil
Though it is harmless mold on soil can appear due to either less sunlight or overwatering. You can remove the mold by replacing the top two inches of the soil and also take care to improve sunlight and reduce watering frequency
Toxicity of Silver Lady Fern:
Silver lady fern is not considered toxic to either humans or pets but if too much of it is ingested it can still lead to nausea, vomiting, and even loss of appetite
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