Last Updated on March 19, 2022 by Admin
The Alocasia Sanderiana Nobilis is also called the Alocasia Nobilis. It is a rare and new cultivar that features dark green leaves with three main pointed corners forming a V-shape. Although, its leaves are jagged all throughout. The plant also features very distinctive white veins.
It looks very similar to the Alocasia Amazonica but the Alocasia Nobilis has deeper cut foliage.
The plant is looks like its parent the Alocasia Sanderiana but its leaves are slender and form a V-shape.
How do you care for the Alocasia Sanderiana Nobilis? The plant thrives on medium to bright indirect light indoors and partial shade outdoors. Give it a warm, humid environment and moist soil. However, when watering, allow the soil to dry between waterings to avoid overwatering or root rot. Use well-draining soil as well. Feed the plant with a balanced fertilizer for optimal growth.
Alocasia Sanderiana Nobilis Plant Care
Alocasia Nobilis Light Requirements
The Alocasia Sanderiana Nobilis does best in medium to bright indirect light. It needs a well-lit location to produce its relatively large leaves.
Similarly, sufficient lighting will allow it to maintain their stunning color and distinctive veins.
However, you want to be wary of direct sunlight. More specifically direct sun during mid-day or in summertime.
Too much strong or intense sunlight will cause leaf discoloration. Additionally, past a certain point, the leaves will get scorched and end up with black or brown burn marks.
So, if you do give the plant direct sunlight, make sure it is from the morning sun in the east. This is something the plant appreciates and will reward you for.
That’s because the sun’s rays during this time of day are gentle compared to that between 10:30 a.m. to 3:30 p.m.
Similarly, the plant will be happy with late afternoon sun after 4:00 p.m. But it is harder to get 6 hours of light if you begin at this time.
So, technically, while it is a good idea to keep the plant away from direct sun, this does not apply to all times of day. Instead, it is usually during the hottest times of the day.
As such, this is when the sun is coming from the south or the west.
Alocasia Nobilis Temperature
The Alocasia Nobilis prefers warm to hot weather that is consistent. This is something it has gotten used to in its native habitat which are the tropical and subtropical forests of Asia and Eastern Australia.
Therefore, the plant enjoys 65 to 75 degrees Fahrenheit the most.
This is where it feels most comfortable. And it will grow the fastest here.
Similarly, it will do well in higher temperatures all the way up to 90 or 95 degrees Fahrenheit without a problem. However, if your plant is already used to a more moderate climate, don’t move it somewhere very hot all of a sudden.
Instead, do it gradually so the temperature goes up 5-10 degrees every day or two. That way it will be able to adjust its way up without getting shocked by a sudden dramatic change.
More importantly, keep in mind that the Alocasia Sanderiana Nobilis is not cold hardy.
There are no winters in the tropics.
Thus, the plant is poorly suited for the cold. In fact, once temperature go below 60 degrees Fahrenheit, it will start to struggle.
For this reason, it is important to make sure to bring the Alocasia Nobilis indoors once the weather drops around fall (if you take it outdoors during summer).
If you leave it through the winter, the plant will die back to the ground or the potting mix. Although, its tubers will still be okay unless where you live gets really cold and the ground freezes over as well.
But in most cases, its healthy underground structures mean that the plant will start coming back to live when the weather gets warmer again in spring. Then the plant will start growing.
The downside is that it has to start over and you lose all the leaves your Alocasia Nobilis already had.
Indoors, keep the plant in a warm, cozy location. And cut back on water.
Do note that if it stays somewhere cold indoors, there’s a chance that it will go dormant. If this happens, it will bounce back in spring. But you need to make sure to cut down on water since it won’t be using much while in dormancy.
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The Alocasia Sanderiana Nobilis prefers high humidity of 60% and higher. And this will allow it to grow faster and produce larger foliage. The leaves will also look lusher and more vibrant if you maintain higher humidity.
That said, high humidity is not always ideal for homes.
Although keeping it in between 60% and 75% will not do harm. But too much moisture in the air in some environments will lead to mold. Therefore, it is important to balance this.
In most cases though, homes usually have lower humidity. The only exception is if you live in subtropical or tropical climate zones. There, humidity is usually high. This is why the plant enjoys this condition.
But most homes in the U.S. have average humidity between 20% and 50%.
This means you may or may not have issues with air moisture depending on where you live.
I like to keep a hygrometer near my plants so make it easy to check daily humidity.
This way, I know when my more humidity sensitive plants need some help.
To increase humidity, you can get a humidifier or move the plant to the bathroom.
Personally, I like to use a humidity tray, which is just a fancy way of saying to put water in a tray and place the plant on top of rocks, so it stays above the water line.
In this setup, as the water evaporates, it increases the moisture in the air around the plant. Thus, boosting humidity.
You can likewise mist the plant. but be careful not to overdo it since excessive water on leaves can cause fungal infections.
How Often to Water Alocasia Sanderiana Nobilis
The Alocasia Nobilis is a thirsty plant. And it likes soil to stay slightly moist consistently. However, you want to be careful not to leave the soil wet or soggy. Too much moisture can cause overwatering which can make the plant’s rhizomes rot.
Therefore, it is important to balance watering such that the plant gets what it wants but the soil also dries up a bit before you add more water.
The simplest way to do this on a consistent basis is to wait for the top 2 inches of soil to dry out between waterings. Use you hand or finger to check for soil moisture.
You can also use a moisture meter if you wish.
If you want to be more conservative, wait until about a quarter of the soil (from the top) is dry before you add water. This just about ensures that you never end up overwatering the plant.
Using either of these methods, your watering frequency will automatically adjust through the seasons.
In the summer when the weather is hotter, you’ll end up watering 2 or maybe every 3 times a week depending on how hot it gets in your area.
In winter, frequency may decrease to once every few weeks.
This allows your watering schedule to be dynamic based on what the plant needs.
Alocasia Sanderiana Nobilis Potting Soil
The best potting for the Alocasia Nobilis is porous, well-draining and remains moist. It has a soil pH between 5.5 to 6.5.
There 3 main characteristics are essential because moist soil keeps the plant happy by letting it stay hydrated. Good drainage is very important to avoid overwatering or waterlogging.
Finally, porous soul will have good aeration, allowing oxygen to reach the roots.
Some online stores offer their own custom blend of Alocasia Mix. This would be perfect for the plant since it is designed for the genus.
However, there are only a few shops that actually make their own alocasia mixes.
Therefore, you’re likely better off making your own alocasia potting mix at home. To do so, you can combine equal parts of the following ingredients:
- Potting soil
This will give you all the features the Alocasia Sanderiana Nobilis needs. The perlite will ensure that the soil stays light and drains excess moisture.
This way, the roots don’t end up sitting in water.
Alocasia Nobilis Fertilizer
For optimal growth, the Alocasia Nobilis needs fertilizer. The nutrients will allow it to grow faster, produce more foliage and have good color. It also prevents nutrient deficiencies.
You can use a balanced water-soluble fertilizer or a slow-release fertilizer.
If you go with the former, which is usually the option for most home growers, apply once a month during the plant’s growing season. Dilute it to half strength each time because indoor potted plants don’t need as much of a dose as those grown outdoors in the ground.
Always fertilize when the soil is moist, never when it is dry, or this increases the risk of burning the roots.
If you decide to go with the latter, you only need to feed the plant once or twice during its growing season.
Slow-release work differently in that they come in granules. As such, you scatter them on the soil and they will break open at different intervals, usually weeks and months.
In doing so, they release the nutrients over a longer period of time.
This reduces the number of times you need to feed the plant. And it reduces the risk of overfertilizing as well.
Alocasia Nobilis Pruning
The Alocasia Nobilis can grow to between 1-3 feet tall. This makes it a small to medium sized plant as far as alocasia varieties go.
Its leaves make up most of the plant as they are huge relative to the plant’s overall size.
This is one of the things that make it attractive.
However, the narrow nature of its leaves makes that the plant can look scarce unless you allow it to get a bit more bushy.
This is why pruning is a low maintenance task for this plant.
How to Propagate
The best way to propagate the Alocasia Sanderiana Nobilis is through division.
The plant develops from rhizomes as such, you’ll be dividing these to propagate the plant. Each of the rhizomes will have roots so you don’t have to worry about rooting them later on.
You can likewise choose those with stems and leaves already so you have semi-grown plants immediately after propagating.
Here’s how to propagate the Alocasia Nobilis step by step.
- Carefully take the plant out of its container
- Remove excess soil to reveal the roots. This will let you decide where you want to divide the plant.
- You’ll see that the plant’s underground structure is made of clumps. And you’ll essentially separate these and plant them individually.
- You can divide the rhizomes to 2 or more segments depending on how many new plants you want and how big the plant is. Usually, most people divide a parent into 2 plants so you have good sized ones afterwards. But it is really up to you.
- Take a sterile knife and cut where you want to divide the plant.
- Plant each division into a pot with soil.
After propagating, take care of each of the new, smaller plants like you did the parent. These will eventually grow into clones of the mother plant getting just as big or bigger.
How to Repot or Transplant
The Alocasia Sanderiana Nobilis only needs repotting every 18 to 24 months or so. Although it is better to check if the plant is root bound to know when to repot.
That’s because the plant enjoys being in a slightly tight container. It also does not like being moved too often.
Therefore, don’t repot it unless needed.
This usually means when the plant gets root bound or there’s come kind of emergency like overwatering, uncontrolled pests, root rot or something else.
Once you see roots coming out from the drainage holes at the bottom of the pot, it means it is time to repot.
You can wait for spring to do so since this is the best time to repot the plant.
When repotting, select a container that is once size larger (about 2 inches). Then, carefully unpot the plant and remove excess soils from the roots.
Fill the new container with fresh, well-draining potting soil up to about a third or 40% of the way.
Then place the plant in and fill the remaining area with soil to keep the plant stable and in place.
Is It Toxic/Poisonous to Humans, Cats & Dogs
Yes. Unfortunately, this alocasia plant is toxic. But it only becomes toxic to people and pets once ingested.
Therefore, it is important to keep an eye on young children, dogs and cats when they’re playing around the plant. You can also put the plant out of their reach to avoid any issues altogether.
Alocasia Sanderiana Nobilis Problems & Troubleshooting
The Alocasia Nobilis can be prone to pests especially when weak, stressed or sick. Therefore, it is essential to keep the plant healthy as much as possible.
Also clean its leaves as they accumulate dust.
Pests are attracted to dust.
Another good way I’ve found is to spray the plant with insecticidal soap spray every few weeks. This not only keeps pests away but also cleans the leaves.
The most common pests that will come around your Alocasia Sanderiana Nobilis are spider mites, mealybugs, aphids and scale.
Root rot and leaf infections are the two things you want to watch out for.
Root rot is the most serious of all problems as it can eventually destroy your plant.
It is caused by overwatering or waterlogging.
Therefore, allow the soil to dry between waterings. Also, use well-draining soil.
On the other hand, leaf infections are caused by wet leaves that don’t dry for long periods. This usually means lack of light or air circulation. Or you are watering late in the day.