Silver Sword Philodendron (Philodendron hastatum) Indoor Care and Propagation Guide

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Silver Sword Philodendron (Philodendron hastatum) requires bright indirect light, warm and humid conditions and moderately moist, rich, well-drained, all purpose soils coupled with monthly feeding in the growing season.

Philodendron hastatum is among the evergreen, climbing Philodendron varieties and bears glossy, large, sword-shaped leaves with a silver sheen.

Silver Sword Philodendron like Spadeleaf Philodendron (Philodendron domesticum), Finger-leaf Philodendron (Philodendron elegans), Blushing Philodendron (Philodendron erubescens) and Philodendron ilsemanii 'Variegata' requires to be given a moss pole or a trellis to give it support to grow upright.

Botanical name: Philodendron hastatum
Family: Araceae
Common names: Silver Sword Philodendron

Origin

Philodendron hastatum is native to the tropical rainforests in Southeast Brazil where it grows as an epiphyte on trees, climbing by means of the aerial roots to the tree canopies in search of light. It is considered an endangered species in its native habitat due to deforestation but the plant is readily available for sale.

Size

Silver Sword Philodendron can grow to a height of 10 feet and 5 feet wide in its native habitat but it only grows to about 5 feet when grown indoors. On account of its size and spectacular foliage, Philodendron hastatum is one of the best plants for the home as it will create a magnificent sight in any space.

Toxicity

According to National Capital Poison Center, Silver Sword Philodendron (Philodendron hastatum) like other Philodendrons are toxic to both humans and pets. The plant contains Calcium oxalate crystals which if ingested, can cause burning and swelling in the mouth and throat, vomiting, diarrhea and abdominal pains. Therefore, keep the plant away from the reach of children and pets.

Where to Buy

If you are looking to add Silver Sword Philodendrons to your plant collection, you may get them online from Etsy (Link to Etsy) or from Amazon (Link to Amazon).

Philodendron hastatum Care Indoors

Silver Sword Philodendron (Philodendron hastatum) requires bright indirect light (filtered light), average warmth of 18-27⁰C, humidity of 60-70% and moderately moist, fertile, well-drained, all purpose soils coupled with monthly feeding during the growing season.

Philodendron hastatum requires regular pruning to keep the plant neat, encourage a bushy growth and rejuvenate growth. Repotting of the young plant is needed when it becomes pot-bound while the large plants require annual replenishment of the soil. Keep reading for a detailed account on these conditions and how to achieve them.

Watering

Water Silver Sword Philodendron thoroughly during the growing season while allowing the top 2-3 inches of soil to dry out between waterings to keep the soil moderately moist.

Reduce watering during the cold season as growth is minimal at this time to keep the soil slightly moist.

Use water that is at room temperature to avoid shocking this tropical plant leading to reduced growth. Avoid soggy soil by ensuring that the pot has a drainage hole as soggy soil can lead to root-rot and death of the plant.

Light Requirements

Silver Sword Philodendron grows best in bright indirect light (dappled light). Keep it away from direct sunlight as it can cause scorching of the leaves.

Lack of enough light will result in leggy growth and small-sized pale leaves. Therefore, where the lighting is not adequate, you may grow Philodendron hastatum under grow lights to ensure it receives the correct amount of light. Check out these full spectrum grow lights on Amazon.

Turn the pot regularly to ensure that the plant receives light on all sides for uniform growth and prevent leggy growth.

Temperature and Humidity

Silver Sword Philodendron prefers average warmth within the range of 18-27⁰C. Temperature outside this range may harm the plant. Keep the plant away from drafts to prevent extreme temperatures. Too high temperatures may cause yellowing of leaves while too low temperatures will cause the plant to stop growing.

Silver Sword Philodendron requires a humidity of 60-70% to thrive. However the plant can withstand dry air for short periods but low humidity for prolonged periods will result in brown leaf tips and edges.

Keep the air moist through out the growing period by setting the pot on a wet pebble tray or use a cool mist humidifier to raise humidity. Learn more on how to increase humidity for houseplants.

Once in a while, clean the leaves by damp-wiping to get rid of dust and to discourage pest and disease infestations. Ensure that there is good air circulation to reduce fungal diseases.

Fertilizer

Feed Silver Sword Philodendron with a balanced water-soluble fertilizer every 3-4 weeks during the growing season for lush growth. Withhold feeding in the cold season as growth is reduced at this time and feeding at this time may cause fertilizer burn and death of the plant.

Potting Soil

The best soil for Silver Sword Philodendron should be rich in organic matter and free-draining to prevent it from getting soggy while providing the required nutrients. All purpose potting soils are ideal for this plant.

Repotting

Repot young Silver Sword Philodendron at the beginning of the growing period. Use a pot that is 1 size larger than the current one. Ascertain that the pot has a drainage hole to prevent the soil from getting soggy as it can result in root-rot. Check out these ceramic pots with drainage holes and saucer on Amazon.

A large Silver Sword Philodendron may be impossible to repot due to their enormous size. Therefore, replenish the top 2-3 inches of soil at the beginning of the growing season or as necessary. Take care not to injure the roots to avoid fungal infestations.

Pruning

Pruning Silver Sword Philodendron involves removal of yellow and dead leaves to maintain the plant neat and also reduce pests and diseases.

To encourage a bushy and compact growth, pinch off the growing tips at a point above the node as new growth emerges from a node. The tips can be used to propagate new plants. Cutback the leggy stems at the beginning of the growing season to rejuvenate growth. Learn how to prune houseplants.

Propagation

Silver Sword Philodendron (Philodendron hastatum) propagation can be done during the growing season from stem cuttings or by plant division. The stem cuttings can be rooted in soil or in water.

How to propagate Silver Sword Philodendron from stem cuttings in soil

Take a stem cutting of about 4-5 inches long from a healthy Silver Sword Philodendron by cutting the stem below a leaf node. Strip off the lower leaves.

Insert the cutting in moist, well-drained soil while ensuring at least on leaf node is below the soil.

Place the set up in a warm, well-lit place and maintain the soil moist until new growth has emerged.

Allow the new Philodendron hastatum to be well established before transplanting after which you can begin routine care.

How to propagate Silver Sword Philodendron from stem cuttings in water

Take a stem cutting of about 4-5 inches long from a healthy Silver Sword Philodendron by cutting the stem below a leaf node. Strip off the lower leaves.

Place the cutting in a jar of clean water while ensuring at least on leaf node is below the water surface.

Position the set up in a well-lit place and change the water every 5-7 days until roots have developed.

Transfer the new Silver Sword Philodendron into individual pots in moist, free-draining soil when the roots are about 4 in. long.

Maintain the soil moist until new growth has emerged on the new Silver Sword Philodendron cuttings.

Allow the new Philodendron hastatum to be well established before transfering the pots to their permanent position after which you can begin routine.

How to propagate Silver Sword Philodendron by plant division

During repotting, divide large Silver Sword Philodendron into several sections. Ensure each section has adequate healthy roots.

Plant the sections in individual pots in moist, free-draining soil and place in a well-lit shaded place.

Maintain the soil moist until the new Philodendron hastatum is well established and begin routine care.

Philodendron hastatum Growing Problems

Silver Sword Philodendron (Philodendron hastatum) growing problems include yellow leaves, dropping leaves, brown leaf tips and edges, rotting, pests and diseases among others. Keep reading for more on these problems and how to fix them.

Rotting stems

Rotting stems in Silver Sword Philodendron are due to stem-rot disease which is prevalent in humid conditions coupled with too little warmth. To save the plant repot it in fresh dry soil and keep the soil dry and warm for a period of time before watering. Read more on how to treat stem-rot disease in houseplants.

Diseases

Silver Sword Philodendron is prone to leaf spot disease which is promoted by overwet conditions coupled with poor air circulation. Isolate the affected plant to prevent spread to the rest of the plants and spray it with a fungicidal solution. Ensure to cover the entire plant; the leaves and the stems.

To prevent future infestation, avoid wetting the foliage and water from the bottom instead. In addition, ensure that there is good air circulation for the plant.

Pests

Common pests in Silver Sword Philodendron are aphids, scales, whiteflies and mealybugs. Isolate the affected plant to prevent spread to other plants and treat it with neem oil or insecticidal soap as per the manufactuer's instructions.

Yellow leaves

Overwatering Silver Sword Philodendron is the reason for yellow leaves if many leaves are affected and there are signs of wilting and rotting. Water the plant thoroughly during the growing season while allowing the top 2 inches of soil to dry out between waterings.

Cut down on watering in the cold season to keep the soil slightly moist as growth is minimal at this time. However, do not allow the soil to dry out completely. Learn more on how to water houseplants the right way.

If there is no wilting and rotting, underfeeding is the cause of yellow leaves. Feed the plant every 3-4 weeks during the growing season with a balanced water-soluble fertilizer. Withhold feeding in the cold season to avoid fertilizer burn and death of the plant. Learn how to feed houseplants.

If only lower leaves are affected and have dark spots and new leaves are dark and small, then underwatering is the cause of the yellow leaves. The solution is to water the plant thoroughly during the growing season while allowing the top 2 inches of soil to dry out between waterings but never allow the soil to dry out completely.

If leaves are pale colored and have straw-colored patches the cause of yellow leaves is exposure to direct sunlight. Protect the Silver Sword Philodendron or keep it away from direct sunlight.

Leggy growth and small pale leaves

Too little light is the cause of leggy growth and small pale leaves as Silver Sword Philodendron will not thrive in shade. Place the plant in a more brighter spot where it will receive bright indirect light or instal a grow light if the natural light is not enough. Check out this guide on understanding light for houseplants.

Dropping leaves

The lower leaves in Silver Sword Philodendron will drop as they age but if there is an abnormal leaf drop, the reason is sudden change of the growing conditions. Avoid moving the plant to a new position before gradually acclimating it.

If the leaves turn brown and dry before they drop, then too high temperature is the cause of leaf drop. Philodendron hastatum prefers average warmth of 18-27⁰C. Protect it from hot drafts by keeping it away from hot air vents or near any heat source. Check out this guide on understanding temperature for houseplants.

Brown leaf tips and edges

There are two possible causes of brown leaf tips and edges in Silver Sword Philodendron. One possible cause is dry air. Set the pot on a wet pebble tray or use a cool mist humidifier to raise humidity for the plant.

The second possible cause of brown leaf tips and edges in Silver Sword Philodendron is that the plant is pot-bound. Repot the plant into a pot 1 size larger. Ensure that the pot has a drainage hole to prevent the soil from getting soggy.

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