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Philodendron Lehmannii – An Exotic Aroid

by gardeningit
Philodendron Lehmannii - An Exotic Aroid

Philodendron Lehmannii is an exotic evergreen plant from the Araceae family. Its elongated, glossy-green leaves are the reason why this plant is so loved by phytophiles. It can be grown as a houseplant in a home to add a touch of nature indoors. You can also grow it outdoors when there is a mild atmosphere.

Because it is a low-maintenance plant that requires minimum care and effort to grow, you can grow it in your room, even if you are a beginner. To help you with its care, here is a comprehensive guide for you.

Philodendron Lehmannii Classification

  • Family: Araceae.
  • Subfamily: Aroideae.
  • Genus: Philodendron.

Origin

It is an exotic plant with no known origin. It is found in the humid, tropical rainforests around the world.

Philodendron Lehmannii Appearance

Foliage

This Philodendron produces long, deep-green leaves with deep veins. The leaves are 10 to 16 inches long.

Flower

It does not bloom indoors. It produces white-colored inflorescence in its natural habitat only.

Size

It is a medium-sized plant that grows up to 2-3 feet in height.

Philodendron Lehmannii Care

Philodendron Lehmannii prefers rich, well-draining soil to grow. The top-third of soil must be allowed to dry between waterings. You should place it under partial shade or bright, indirect sunlight where the temperature stays between 12 and 32°C. Feed the soil every month with a liquid or general houseplant fertilizer. The ideal humidity for this plant is 40-50%.

Quick Guide 

  • Watering: When top-third soil is dry.
  • Soil type: Rich, well-draining soil.
  • Sunlight: Partial to bright, indirect sunlight.
  • Temperature: 12 to 32°C.
  • Humidity: 40% to 50%
  • Fertilizer: Liquid or general fertilizer every month.
  • Pruning: Prune old leaves before the growing season.
  • Repotting: Every year in early summer.

Philodendron Lehmannii Watering

Check the pot for damp topsoil by using a stick or finger before watering. Keep the bottom soil moist all time but allow the top third to dry between waterings. It will prevent root rot. Decrease the watering frequency during winters because the plant stays dormant during those days.

It is best if you use lukewarm distilled water to irrigate this plant. If you use tap water, leave it overnight in a bowl to enable chlorine and other minerals to sink and let the water heat up. You should not use cold water for watering your plant because a sudden temperature fluctuation in its soil will lead to brown to yellow leaf borders.

Soil

The soil type is an important part of any plant care because it affects its growth. The potting soil you use for Philodendron Lehmannii should have the following characteristics to allow for optimum growth.

  1. It should be well-draining.
  2. It should be able to retain the necessary amount of water.
  3. It should allow for good airflow.
  4. It must be rich in nutrients and organic compounds.

Peat-based soil is one having the first three of the above characteristics. Therefore, it is the perfect soil for Lehmannii or any other Philodendron. To increase the organic content of peat-based soil, you can add compost to the soil.

Sunlight

This gorgeous plant needs good sunlight exposure for the healthy growth of its large leaves. It prefers partial shade to grow. When a plant needs partial shade, you should place it in a window sill that receives just 3 hours of direct sunlight. East and a north-facing window are your options here. Reduce the hours of direct sunlight exposure during peak summers.

Moreover, this plant can also grow perfectly well in bright, indirect sunlight. So, if you do not have east or north-facing window, you can place it in a well-lit room in your home. You can also place it 6 feet away from a south-facing window.

This Philodendron can also grow under artificial lights. Keep these lights on for 12 hours and keep your plant 3 feet away from them for its proper growth.

Temperature

Philodendron Lehmannii needs a warmer environment to grow. Because it is a tropical plant, it cannot tolerate too hot or cold temperatures. Too high-temperature burns this plant’s foliage, and too much cold leads to cold injuries. Therefore, exposure to extreme temperatures eventually kills the plant.

The optimum temperature range for this Philo is 12°C to 32°C. A fluctuation of 2 to 3°C between day and night is tolerable by this plant.

Humidity

This plant prefers medium humidity to grow. It stays happy indoors as long as the humidity stays between 40% and 50%. You can maintain this humidity level by keeping the plant’s pot over a pebble tray.

During winters, the humidity level is insanely low due to radiators. Therefore, you should never place this plant near a heater or in the same room as a radiator.

You should also mist its leaves once a month. This practice helps to remove dust particles clogging the leaf pores. Do not mist the leaves every day because it favors a pest infestation.

Fertilizer

Use a liquid or general houseplant fertilizer to feed your Philodendron Lehmannii. This fertilizer should have a balanced NPK value, preferably 20:20:20. Apply this fertilizer every month in the growing season, from spring through fall.

Do not fertilize this plant during winters because it is dormant during those days. The roots will not absorb the extra nutrients. They will accumulate on the soil surface, forming a white crust. This salt layer will stop air and water from getting absorbed into the soil and eventually lead to the death of the plant.

If your plant soil has formed such a white salt crust during winters, wash the soil by running water into it. Then stop fertilizing it for the next few weeks until the growing season starts.

Pruning

Prune the dead leaves of your plant before the growing season starts. This practice will maintain the aesthetically pleasing appearance of the plant. Prune the foliage up to 4 inches. Do not prune the plant during spring and summer. It is because these are the seasons of a plant’s active growth. Pruning will affect the growth rate.

Never forget to sterilize your shears before using them. Use rubbing alcohol to sterilize your pruning tools.

Repotting

It is a fast-growing plant; therefore, it needs yearly repotting. You should re-pot it when it doubles its foliage or in every early summer, whichever comes first. Use a 2 inch bigger pot than the old one. It will prevent the plant from being root-bound. You should also change the potting soil while repotting.

How to Propagate Philodendron Lehmannii

Philodendron Lehmannii propagation is done by using seeds or stem cuttings. You should propagate your plant during summers because these are the days of active growth. Here is a step-by-step propagation guide for your help.

Use a sterilized knife or shears to take one 3 to 6-inch stem cuttings from your plant. It must have 2-3 leaves on it. Remove the bottom leaves.

A stem cutting with at least two nodes, one at the base and one above, is best for fast growth. The node at the base leads to root development, while the shoot develops from the node at the top.

Keep this cutting in a glass container filled with water. Once it produces new roots and the roots are 3 cm long, transplant this cutting to a 3-inch container filled with potting mix.

  • Use a potting mix of compost, sand, and perlite.
  • Keep the container in a plastic bag. Open it once in a while for airflow.
  • You will not have to water it much because the secluded atmosphere will keep the soil wet for more time.
  • Keep this container in a well-lit space.
  • Remove the plastic bag when a new, tiny leaf appears on the stem cutting.

Philodendron Lehmannii Basic Features

Growth Rate

It is a fast-growing plant that produces new leaves every day. To maintain its growth rate, you should fertilize it regularly during the growing season. One main reason for its decreased growth rate is poor sunlight exposure or irregular watering.

Toxicity

All Philodendrons, whether Philodendron Lynamii or Philodendron Lehmannii, are toxic for animals and humans. The calcium oxalate crystals present in the large leaves of Philodendrons are poisonous and cause GI problems.

Philodendron Lehmannii Air Purification

Philodendron Lehmannii also acts as a natural air purifier. It filters the air and removes toxins, such as benzene and formaldehyde. Therefore, it is an excellent plant to grow in a bedroom or living room.

Drought Tolerance

It is a drought-tolerant plant that maintains the overall health of its foliage despite low water availability. But it is best to water it regularly.

Maintenance

It is a low-maintenance aroid that can be grown indoors without facing any problems. If you are a beginner in indoor gardening, it is an excellent plant to start your experience.

Dormancy

If your Lehmannii plant stops growing during winters, you need not worry. The reason behind its retarded growth is winter dormancy. It will start growing once the colder months end.

Common Problems and Their Solutions

Diseases

It is a problem-free and disease-resistant plant. Some problems can occur due to improper care. For example, curled leaves or brown edges of the leaves result from too much light or under-watering. But if your plant has just brown edges on its leaves, it means it is asking for more humidity.

Moreover, if the lower part of the foliage turns yellow, it means you have been over-watering your plant.

Pests

Common pests of this Philo are spider mites, mealybugs, aphids, and scales. You can prevent them by keeping the leaves moisture-free all the time. Also, spray the plant with a good pesticide once or twice every month.

Philodendron Lehmannii FAQs

How Often Should I Water Philodendron Lehmannii?

You should water this plant once or twice a week as soon as the top-third of its soil gets dry. Checking the topsoil for moisture before watering the plant helps prevent root rot.

Why Does My Philodendron Lehmannii Has Tanned Cataphylls?

If your plant has tanned or brown cataphylls, you need not worry because it is a completely normal process. You can remove them by hand or using a sterilized pair of shears.

Is Philodendron Lehmannii a Rare Plant?

Yes, it is an extremely rare and exotic plant. Only a handful of Philodendron Lehmannii type aroids are found in the tropical rainforests.

Conclusion

If you love collecting rare indoor plants, Philodendron Lehmannii is a great option for you. This evergreen plant with long, glossy leaves surely becomes the limelight of any indoor plant collection. One of its great features worth mentioning here is its low-maintenance foliage. Therefore, you can grow it in your home without any hassle. It is also an air purifier that will provide healthy air for you to breathe indoors.

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