Alocasia Purple Sword

A Beginner's Guide to Alocasia Purple Sword Plant Care | All you Need to Grow

Family: Araceae      
Common Name: The Purple Sword
Botanical Name: Alocasia lauterbachiana ‘Purple Sword’
The mighty warrior has arrived, wielding its majestic lanceolate leaves! Alocasia Purple Sword carries its foliage high in the air, almost piercing through the sky. This architectural indoor plant loves added humidity and be sure to let the soil dry out partially between watering sessions! As with many Elephant Ears, this one will grow once warm weather arrives!

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Alocasia Purple Sword is an adaptable plant that can handle a range of light from low to bright indirect. It is important to keep in mind that the amount of light the plant receives will dictate how quickly it grows. If you want your plant to push out new leaves actively and produce the large leaves it is known for, then make sure your plant is in a spot where it can receive plenty of bright indirect light. This plant will survive but not grow as quickly when placed in an area with lower light levels. If you bring your plant outdoors in the warmer months, place it in a spot that receives partial shade. Exposure to direct sunlight will burn the leaves. To ensure you are providing the right light for your plant, check in on it regularly to see how it is responding to what it is currently receiving.


You will know it is time to water your Alocasia Purple Sword when the top couple of inches of the soil are dry. This plant has medium water requirements. Even consistent moisture is ideal. This plant likes to partially dry out between waterings, but do not let it become soggy, as this plant does not like that. Cut back on watering during the colder months if the plant is not actively growing. No overwatering your plant - it can cause root rot. It is better for this plant to endure under watering as opposed to being overwatered.


Soil that is loose and nutrient rich is what your Alocasia Purple Sword does best with. Be sure that you are using a soil medium that can retain moisture but also allows for draining the extra water to avoid any root rot. Most pre-mixed soils will suffice. Make sure that there is plenty of organic matter, like coco-coir, peat moss, or shredded leaves, and avoid soils that contain moisture retaining crystals. If your soil drains too quickly, we recommend re-potting your alocasia into a compost-rich soil mixture, with less drainage materials.


As Alocasia Purple Sword is a subtropical plant, it prefers warmer temperatures that are more in line with where they originated from. Average room temperatures above 60°F will get the job done! If you place your plant on a patio or outdoor area during the warmer months, then make sure to bring it back inside well before the temperatures drop below 50 degrees Fahrenheit. Avoid placing it near an exterior door, drafty window, or in front of an air conditioning or heating vent. These temperature fluctuations can inhibit growth and potentially damage the leaves. Keep in mind, your plant will go dormant in the colder months. Although it may not lose all their leaves, it will stop growing, and should be kept in slightly lower temperatures so that it can enjoy their down-time! 


Alocasia Purple Sword houseplants thrive most when they receive lots of humidity, which makes sense given their subtropical origin. Aim for a humidity level that is around or above 60%. It is recommended that you place your plant in an area with high humidity. If you live in a drier climate or do not have an area with enough humidity, then consider using a humidifier or a pebble tray with water. These options can help provide your plant with the extra boost of dampness that they crave.


For your Alocasia Purple Sword, you should fertilize it during the growing season every two to four weeks. In the fall and wintertime, you can reduce how often you fertilize your plant. You can even pause fertilizing it all together during these months. Use a balanced, water-soluble fertilizer that has the equal Nitrogen-Phosphorus-Potassium ratio of 10-10-10 or 20-20-20.

Growth Rate

Alocasia Purple Sword plants grow at a moderate rate. This plant typically will grow to a mature height of 2 to 4 feet (60 to 120 cm). However, it is all dependent on how well you take care of your plant.   

Pet Friend or Foe

All Alocasia, including Alocasia Purple Sword plants are toxic to pets, so be sure to keep them away from your furry friends! Foe! 

Pro Tips

  1. Get rid of any yellowing or damaged leaves to encourage new growth and keep your Alocasia Purple Sword’s overall health and appearance.
  2. Consider providing your plant stakes or supports to assist its posture to stand upright.
  3. Always watch out for any common houseplant pests like spider mites, mealybugs, and aphids!
  4. Repot your plant when it becomes root bound, which is usually every 2-3 years!

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