If I judge myself as a plant parent, I was a newbie with only a little knowledge of plants five years back.
I collected several plants during my early years and, sadly, killed almost half of them. Among the plants I killed the most was Anthurium clarinervium.
I treated them like other plants, but fortunately, I learned they needed specific care requirements later.
Generally, Anthurium clarinervium needs well-draining, porous soil with a 5.5-6.5. Additionally, it requires warm temperature (68ºF to 80ºF), high humidity (above 50%), sufficient light, nutrition, annual pruning, and repotting once in 2-3 years.
Read along if you want to know how I became an expert of Anthurium clarinervium care guide from a newbie.
Here, I have embedded all of the necessary care requirements you need to follow to better care for them.
In this article, I have mentioned common problems and ways to resolve them.
Table of Contents
- Overview of Anthurium Clarinervium
- Anthurium Clarinervium: Where to Buy and Care Tips
- Frequently Asked Questions about Anthurium Clarinervium
Overview of Anthurium Clarinervium
Anthurium clarinervium is a lithophyte or an epipetric plant that grows natively on the rocky landscape of Mexico.
Its common name ‘Velvet Cardboard Anthurium’ is enough to define its beauty. The plant is highly adorned for its beautiful cardboard-like stiff heart-shaped dark green foliage.
Moreover, the velvety feeling that the plant offers can thrill your tactile sense.
Here is some additional information about Anthurium clarinervium.
|Scientific Name||Anthurium clarinervium|
|Common Name||Velvet Cardboard Anthurium|
|Growth Zone||USDA zones 9-11|
|Plant Type||Evergreen Perennial tropical Plant|
|Growth Size||15-25 inches|
|Toxicity||Toxic to Human and Pets|
|Sunlight||8-10 hours of bright filtered light|
|Temperature||68ºF (20ºC) to 80ºF (27ºC)|
|Watering||Once a week in summer
Twice or thrice a month in winter
|Soil Type||Porous, Chunky and Nutrient rich.
Soil pH 5.5-6.5
|Fertilization||Every two months|
|Humidity||Above 50% of the relative humidity|
|Repotting||Once in every 2-3 years|
|Pruning||Once a year|
|Pot Size||2 inches larger than the root-ball of the plant|
|Propagation||Via Stem cuttings, Root division and Seed germination|
Anthurium Clarinervium: Where to Buy and Care Tips
If you are a plant fanatic like me, I bet you might consider adding Anthurium clarinervium to your plant collection.
But, a question might arise as, where to get one? And, how to care for one?
In the subheadings below, I will explain where to buy and how to care for Anthurium clarinervium.
Where to Buy Anthurium Clarinervium?
Like for all other houseplants, the common way is to get from local nurseries and local stores.
However, let me alert you, not all the stores and nurseries might have Anthurium clarinervium as it is not among the common houseplants.
You can also easily get Anthurium clarinervium from online stores.
Interestingly, these stores have expanded their service globally so that you can buy your plant from any corner.
Here is a list of different online stores, nurseries, and retailers where you can get Anthurium clarinervium.
|Places to Buy||Delivery Service|
|Amazon||Within 4-8 days after placing order|
|Etsy||Your product will likely arrive within 7-10 days|
|Aroidsale||The product will reach within 7-8 days to your destination|
|OrchidBox||Within 2-3 days|
|Gethsemane Garden Center||Delivery is done through appointment|
|Swansons Nursery||Only in Seattle metropolitan area|
|Botanica||Generally within 4 days|
|Carnivero||Shipment within 3 days after an order is placed|
How to Care for Anthurium Clarinervium?
Let’s face it; tropical plants are not that easy to care for, and maintaining a conducive environment is the toughest task you have to deal with.
Most of our indoor environments do not meet their natural growing environment. Therefore, you might need extra efforts to gain fruitful aftermath.
Nevertheless, extra effort for Anthuriums’ care never goes in vain as they reward being a center decor piece.
Although some care standards are quite peculiar, they are pretty straightforward.
Here is how you can provide the best care for your Anthurium clarinervium.
1. Adequate Sunlight
Anthurium clarinervium is sensitive to light. That being said, there is another brighter side; the plant can do well even in moderate light.
Yeah, you read it right. Unlike many other tropical plants, the plant does not demand higher light exposure.
But, why opt for medium light when you can provide them with brighter light?
However, they thrive best in the brighter light. It is sufficient to provide them with 8-10 hours of bright filtered light.
Also, you can provide them with a few hours of morning sunlight and afternoon shade.
Symptoms of Insufficient Light
- Stunted and leggy growth.
- Drooping, curling, and wilting of leaves.
- Decrease in photosynthesis rate, thus hindering plant’s natural physiological function.
- Loss of chlorophyll pigment, leading to loss of dark green color of foliage.
Symptoms of Extreme Exposure to Sunlight
- Tips of leaf turn brown
- Leaves turn crispy and dry
- Discoloration of foliage and flower
- High rate of transpiration (water loss from the plant’s leaves). As a result, leaves curl and even fall off.
Tips to Maintain Adequate Light
- You can place the plant near windows or patio that reflect morning and afternoon sunlight.
- Rotate the plant to obtain balanced growth.
- As the intensity of light in winter is low, you can keep them outdoors during the day. However, remember to bring them back indoors at night.
- Avoid direct shifting of the plant from a bright space to a low light space and vice versa.
- You can protect your plant from direct rays by drawing light curtains at windows.
- If your space does not support sufficient light, introduce the plant to grow lights. You can provide them 7-9 hours of L.E.D. Lights.
2. Proper Watering
One thing to keep in mind for tropical plants is you will need to keep their soil consistently moist.
Always remember the soil should not be soggy.
As a general rule, it is ideal for watering your Anthurium clarinervium once a week in summer and twice or thrice a month in winter.
You should never leave them in a pool of water. When the plant is overwatered, it invites bacterial and fungal growth to the soil.
Similarly, overwatering causes root rot. As a result, the plant starts drooping, limping, yellowing, and wilting.
In contrast, underwatering too is a major problem to Anthurium clarinervium. When the plants remain subject to drought for a prolonged period, their leaves turn brown, dry, and crispy.
Save an Overwatered Plant
- Let the soil dry out before watering them. If the plant is not severely overwatered, the method helps revive it.
- However, inspect its root if the plant shows severe root rot symptoms.
- Remove the plant from the pot. If the roots are mushy and soft, the root has undergone rot.
- Take a sterilized pruning shear and cut all of the mushy parts.
- Let the root dry for a few hours. Then, repot the plant into a clean, well-draining pot with a new potting mix.
Save an Underwatered Plant
- Take a large shallow container and half fill it with tepid water.
- Then, drench the pot in the container without the saucer.
- Let the plant sit in water until water bubbles do not appear at the top of the soil.
- Once the water is absorbed well by the soil, take the pot out of the water.
- Leave the in a well-lit space. The plant will revive within 24 hours.
- Unfortunately, if the plant is severely underwater, it might not revive.
Tips to Proper Watering
- Consider watering after the top 2-inches of soil dries out. Insert your finger 1/2 inches into the soil; water only if the soil feels dry.
- Water the plant thoroughly until the water does not drain out of the drainage holes.
- Always throw away the water collected in the saucer to avoid the roots sitting on the water.
- Reduce the watering frequency to half during winter.
- Use room temperature or tepid water for watering your Anthurium.
- Avoid using water containing excessive salts.
- Rainwater serves as the best form of water for Anthurium clarinervium.
3. Warm Temperature
One of the features of tropical plants is they adore warm temperatures.
Your Anthurium clarinervium thrives well in a temperature range between 68ºF (20ºC) to 80ºF (27ºC).
Therefore, you can place them outdoors if you reside in USDA Zones 9a to 11.
However, keep in mind that the survival rate of the planet drops as the temperature falls below 55ºF (13°C).
The plant exhibits stunted growth, curling, and drooping leaves at low temperatures. Likewise, the cellular activities of the plant cease at low temperatures.
Meanwhile, the higher temperature causes a higher transpiration rate; as a result, it causes curling and burning of the leaves.
Tips to Maintain Adequate Temperature
- If the temperature is high, you can balance it out by increasing humidity around the plant.
- You can cover your window with a light transparent drape to prevent direct sunlight.
- Avoid keeping your plant in a sunny location in summer.
- You can cover the plant with transparent plastic or a frost blanket to prevent cold.
- Providing insulation by adding mulch to the top layer can prevent temperature loss from soil.
- You can also use heating pads from the smaller plants during winter.
- Avoid drafty places, heating and cooling vents like heater, radiator, etc.
- You can keep your plant outside during winters. But, ensure that you do not leave them outside on a frosty night.
4. High Humidity
Tropical plants equal high humidity. The rule is the same for your Anthurium clarinervium.
They generally demand humidity higher than 50% of the relative humidity.
Therefore, they might be quite a tricker to care for.
Low humidity in them causes browning and curling of foliage. Low humidity also increases transpiration rate; hence the plant might get stressed.
Also, in a low humid environment, the soil dries out quickly. It can be troublesome as the planet loves consistently moist soil.
But why should it be nerve-wracking when you have got tips to maintain ideal humidity?
Tips to Maintain Adequate Humidity
- Misting your entire plant in the early hour of the day, be careful to overdo it though as it can cause your plant to suffer from the disease.
- You can place a tray of were pebbles below the pot. It helps to increase humidity as the water in the tray evaporates. But, it might not be easy with larger plants.
- Another convenient way is using an electric humidifier. But, it might be slightly costly compared to other methods.
- Grouping your plants help increase humidity by natural perspiration. Though I rarely suggest this method as grouping could cause pest infestation easily.
- Alternatively, you can place them close to the kitchen and bathroom to relish them in the humid air.
- You can also place small plants in a terrarium.
5. Soil Type
Choosing a perfect soil mix is a fundamental step to better care for your Anthurium clarinervium.
Anthurium adores consistently moist soil; therefore, you need to choose a potting mix that holds moisture for a longer period.
The best soil mix for your Anthurium clarinervium is porous, well-draining, chunky, well-aerated, nutrient-rich, and slightly acidic soil. I advise you to maintain a pH range between 5.5 to 6.5.
Remember that the soil structure should be slightly chunkier and not fine. The best soil mix that resembles your Anthurium clarinervium is an orchid mix.
Here are a few commercial mixes that you can use for your Anthurium.
- Miracle-Gro potting Mix
- Sun Bulb 5011 Better-Gro Phalaenopsis Mix
- Espoma AP8 8-Quart Organic Potting Mix
- Dr. Earth Pot of Gold All Purpose Potting Soil
Alternatively, you can make your potting mix. Follow the recipe below for the purpose.
- Mix 1 of part orchid potting mix
- 1 part of sphagnum moss cut into small pieces
- 1 part perlite or pumice
- 1/2 part of coarse sand
- And 1/2 part of quality leaf mold or organic compost.
Pro Tip- You can also use bark, crushed charcoal, dried leaves, coconut coir, crushed lava rock to make soil light and porous.
6. Adequate Fertilizer
How often do you fertilize your Anthurium clarinervium?
The amount of nutrition you put in is directly proportional to the growing size and health of the plant.
Generally, Anthurium clarinervium does not require high fertilization all over the seasons.
But, it demands enough fertilization in its growing season; spring and summer. Rest of the season, the plant goes under dormancy, so you need not fertilize them often.
It is ideal for fertilizing your plants every two months in the growing season and once in the rest of the season.
Most importantly, ensure to use fertilizer rich in phosphorous for Anthurium clarinervium. Also, you will need to dilute the fertilizer to half of its strength for them.
It is best to use organic compost like bone meal, worm casting, manure, chicken litter, etc., for your plants. Alternatively, you can also use synthetic N.P.K. fertilizer in the ratio of 5-10-5.
Here are some of the commercial fertilizers you can use for Anthurium clarinervium.
- Espoma BM10 Organic Traditions Bone Meal 4-12-0
- Indoor Plant Food by E Z-GRO 15-30-15 (P.T.)
- Down to Earth Organic Bone Meal Fertilizer
- Jobe’s Organics 09524 Purpose Granular Fertilizer
Always ensure you do not over-fertilize your plants as it accumulates salts that cause the burning of leaves and roots.
7. Growth Habits
Unlike many other plants, Anthurium does not have a high growth rate.
Their growth rate is generally slow to moderate. Therefore, if your Anthurium clarinervium is growing moderately, it means it is doing good.
Anthurium clarinervium produces a new leaf only in a frequency of 3 to 4 weeks in the growing season. It can reach a height of 15-20 inches. Similarly, its spread is about 15-40 inches in an enclosed environment.
This variety can produce foliage of about 12 inches in length.
Being a shrub, its growth is more lateral.
The plant grows at its maximum rate when it gets a favorable environment, including ideal humidity and temperature.
8. Flowering Habits
One of the luring features of Anthurium includes its vibrant flowers.
But, if you think all Anthurium Varieties produce attractive flowers, you are mistaken.
Anthurium clarinervium is a variety that is adored more for its foliage than its flower.
A mature Anthurium clarinervium produces spadix with pale green and violet hues. However, the plant may not produce these inflorescences in every blooming season.
Similarly, the plant produces berries when the flowers are pollinated. But, pollinating Anthurium clarinervium might be challenging if you have only a single plant.
In such a case, you need to gather male pollen and wait until you have the next flower in the receptive stage.
The berries so produced might take about a year to mature fully.
9. Protection from Pest Infestation
The necessity of Anthurium clarinervium is, in itself, the cause for pest infestation.
Did the statement baffle you? If so, let me simplify it for you.
Anthurium clarinervium requires high humidity. And, the humidity in the atmosphere and soil is the holy place for pests.
When the soil is soggy, it invites pests infestation. Similarly, a humid atmosphere supports the incidence of pests to almost double.
Therefore, you need to peek at your Anthurium to check the signs of pests infestations.
Here are some of the pests in Anthurium clarinervium.
|Common Pests||Signs and Symptoms|
|Mealy bugs||White cotton-like substance appears on the undersides of the leaves.
Curling, wilting and drooping of foliage.
|Scales||Brown bumpy lumps on the undersides of the leaves.
Wilting and drooping of leaves.
Brown/White spots appears on the leaves.
|Aphids||Curling and limping of leaves.
Severe infestation might cause falling off leaves.
|Spider Mites||Discoloration of foliage and flowers.
Stippled and yellowed leaves.
On incidence, fine webbing appears on foliage.
- Remove the infected parts with sharp pruning shears.
- You can knock off pests with isopropyl alcohol. Use a cotton ball dipped in the alcohol and run it along the infected surface.
- Scrape off pests like scales with blunt knives or blades.
- Spray your plants with soap water or insecticidal soaps.
- Spray your plants with neem oil or other horticultural oils.
- Synthetic insecticides containing Pyrethrin may aid in case of high infestation.
- Avoid soggy soil for Anthurium clarinervium.
- Wipe off the plant’s leaves with soap water every 1-2 weeks.
- Provide a shower to the plant once a month. It helps to wash off pests and their eggs from the plant.
- Avoid grouping your Anthurium with other infected plants.
Learn more about How to Identify Insect Eggs on Leaves and Treat Pest Infestation?
10. Protection from Diseases Infestation
Both indoor and outdoor Anthurium clarinervium is susceptible to diseases. Generally, the high humidity and moist soil it dwells in invites diseases.
However, you need not frown or panic upon it as the disease in Anthurium is easily curable.
The problem only occurs when the infestation is severely high.
Here are common diseases in the Anthurium clarinervium.
|Common Diseases||Causative Agent|
|Black Nose Disease||Colletotrichum gloeosporioides|
|Bacterial Blight||Xanthomonas axonopodis|
|Leaf Spot Fungus||Alternaria, Cercospora, Colletotrichum (anthracnose), and Myrothecium.|
|Root Rot Disease||Phytophthora and Pythium|
- Discoloration and yellowing of foliage.
- Brown or black circular patches appear along the edges.
- Stunted growth.
- Hindrance in physiological functioning.
- Wilting, limping, drooping, and falling off the foliage.
- Foul or rotten smells might come from the soil.
- White structure on the top layer of the soil.
- Roots become mushy and soft in touch.
- Tiny water-soaked marks might appear because of bacterial blight.
- Deadhead the infected part as soon as possible. Use sterilized pruning shears or blades for this purpose.
- You can control leaf spots by using fungicides containing copper, mancozeb, or thiophanate methyl.
- Loosen the top layer of the soil. It helps to prevent fungal growth in the soil.
- The best treatment for root rot is repotting. Inspect the roots of your Anthurium and remove all of the mushy parts. Then, repot the plant in a well-draining pot with a new potting mix.
- Unfortunately, if your plant is severely attacked, you might not be able to save it.
- Avoid overhead watering.
- Do not mist the leaves of the plant at night. It makes the plant susceptible to diseases.
- Avoid misting flowers and buds.
- Place your plant separate from other infected plants.
- Spray fungicides once or twice a year to prevent possible disease threats.
- Avoid overwatering your plant.
11. Regular Pruning
I know, it can be hard as I say, you need to prune your Anthurium clarinervium.
But, here is a bright side to it. Pruning back your Anthurium clarinervium helps to keep them neat and encourages bushier foliage.
You can primarily prune back your Anthurium clarinervium once in 1-2 years during fall or the end of the summer.
Timely pruning old, dead foliage, flowers, and buds will encourage thicker foliage.
Things to Keep in Mind while Pruning
- Put on safety goggles, gloves and makes as the plant is toxic.
- Sterilize the pruning materials before and after use.
- Avoid pruning them in the growing season. Untimely pruning might push back the new growth.
- Prune only dead and discolored foliage, buds, flowers, and stems.
- Ensure to prune off damaged leaves, flower buds, and specific branches.
- Avoid pruning more than 20% of the plant as the shock might affect the plant negatively.
- Ensure to choose a spot out of reach of children and pets.
- Always toss off the pruned parts in the garbage bin to avoid contact with children and pets.
12. Potting and Repotting
Growing Anthurium clarinervium perfectly requires the perfect material and perfect size pot.
Choose a pot that is 2 inches larger than the size of the root ball. Otherwise, you can grow a medium-size plant in an 8-10 inches pot.
A smaller pot might choke the plant. And, if the pot is large, it might take a long time for the soil to dry.
Both of the conditions hinder the growth of your Anthurium.
Also, choose a pot with multiple drainage holes to let out excess water and moisture.
As the plant requires aeration, correct soil temperature, and balanced moisture, consider using terracotta, clay, or ceramic pots.
Repotting Anthurium clarinervium
A root-bound Anthurium shows tell-tell signs through yellowing of leaves, wilting, and stunted growth.
Further, you might need repotting when the root catch rot and bacterial infection.
Anthurium clarinervium would require repotting once in 2-3 years when its roots are bound.
Timely repotting is essential as it increases new and healthier growth.
Consider repotting your Anthurium clarinervium once you see roots peeking out 0f the drainage holes.
Note- The plant might wilt and droop for a few days. Stay calm as it will soon regain its earlier state after necessary adaptation.
Tips for Repotting
- Water the plant a day earlier to repotting it. It helps make the process easier, and the root system becomes more resilient.
- Take the plant out of the pot gripping the base of the stem.
- Fetch a clean pot with multiple drainage holes.
- Layer the pot’s base with gravel and fill in the new potting mix. Try using a similar kind of potting mix as earlier to prevent street.
- Now, place the plant into the pot. Ensure you place the rootball at the same depth as in the earlier pot.
- Then, fill the pot with soil until brim. Here, ensure to leave some space at the top to add fertilizer in the coming days.
- Water the plant thoroughly and leave it in a well-lit space.
13. Propagation Methods
Hola to the Anthurium lovers. You might be merrier to read out that multiplying your Anthurium clarinervium involves simple and easy steps.
You need not throw away stem cuttings after pruning them. Instead, you can propagate them.
It is best to propagate your plant while repotting or pruning them. The best time to propagate them is in early spring or summer when the plant grows actively.
Here are two ways to propagate Anthurium clarinervium.
- Rootball Division
- Stem cuttings
A. Propagation via Rootball Division
The method is quite straightforward and easier.
As the new plant obtained by rootball division possess well-developed root and shoots, the propagation becomes easier.
The plant propagated by this method adapts quickly to the newly introduced environment.
Thus, the plant’s growth rate is also higher.
The propagation involves the following process.
Step 1: Moisten the soil a day before propagating the plant.
Also, put on safety measures like goggles, masks, and gloves as the plant is toxic.
Step 2: Loosen the top 1/3 part of the soil.
Afterward, take the plant out of the pot gripping the base of its stem, and untangle all the roots. Simultaneously, remove the soil attached to the roots of the plant.
Step 3: Inspect for sister plants or offsets.
You can see them emerging from the side of the mother plant. Once you find them, slowly separate them from the main rootball. You can also use sterilized knives or blades if separating them becomes difficult.
Step 4: Fetch a clean container and layer it with pebbles at the bottom. Then, fill 2/3 part of the container with soil. Next, place the newly obtained offset in the pot and fill the pot with soil.
Step 5: Water the plant thoroughly and place it in a bright space.
B. Propagation via Stem Cutting
Propagating Anthurium clarinervium via stem cuttings might be slightly thicker.
You will need to choose the right stem for the purpose and prevent them from rotting.
They will likely start rooting and producing new growths after 3-4 weeks.
Here are steps to propagate your Anthurium clarinervium via Stem cuttings.
Step 1: Inspect the stem that you will take for propagation. Remember that the stem must be free of pests and diseases infestation.
Take a stem that is about 2-4 inches in length. Ensure that the stem has two leaves and a few aerial roots.
Step 2: Make an incision such that the cutting possesses leaf nodes.
Leave it for a couple of hours to form callous.
Step 3: Now, you can dust your cuttings with cinnamon powder or an antifungal powder to prevent fungal growth or rot.
Also, you can apply rooting hormones to speed up the process of rooting.
Step 4: Take a clean pot with good drainage holes. Layer the bottom with a few pebbles and fill 2/3 of it with the medium you are using.
Then insert the cuttings and fill the pot with the medium. You can use sphagnum poss, peat moss, LECA, or soil medium for the purpose.
If you are propagating them in water, ensure to clear jar or pot and use clean tap water change. Also, change the water every 3-4 days.
Step 5: Tie a stick or any material to hold up the cuttings. The cuttings might appear wilted for some days because of environmental change.
Leave them in a brightly lit space and water them thoroughly.
Quick Note- Seed Germination is another popular method of propagating Anthurium clarinervium. However, the seed collection process might be hectic if you have a single Anthurium clarinervium.
For Seed Germination, you might want to go through this.
14. Toxicity of the Plant
Anthurium clarinervium is toxic to both humans and pets.
Anthurium clarinervium contains calcium oxalates, which cause harm to humans and pets when injected or come in contact.
In humans, it shows symptoms like breathing difficulty, swollen lips and tongue, nausea, vomiting, and burning sensation in the stomach.
Meanwhile, your pets might show the signs of drooling, pawing at the mouth, and vomiting if they inject it.
On the brighter side, the plant does not show severe symptoms in humans.
However, you will need to seek medical assistance if you inject them.
For pets, you can consult a local veteran or Call the APCC at (888) 426-4435.
Frequently Asked Questions about Anthurium Clarinervium
1. Why is my Anthurium Clarinervium Turning Brown?
Several factors are responsible for the discoloration and yellowing of the leaves in the Anthurium clarinervium.
The most prominent reasons include watering issues, pests and diseases infestation, wrong soil pH, and root-bound problems.
2. How to Identify Anthurium Clarinervium from Anthurium Crystallinum?
The plant is often mistaken with Anthurium crystallinum.
Anthurium crystallinum has narrow, long, and bright green foliage, whereas clarinervium has wide and dark green foliage.
Anthurium clarinervium is not an easy plant to care for. But, the beauty it provides to any space beats all of its cere requirements.
Besides, it does not demand extreme attention. All you need to do is maintain ideal temperature, humidity, soil moisture, and feed nutrition.
Keep an eye on your plant to find pests and diseases infestation signs and resolve them in time.
Follow all of the guidelines mentioned above to keep your plant problem-free.